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21 results on '"Kriete, D."'

1. Flexible Stellarator Physics Facility

Author: Parra, F. I., Baek, S. -G., Churchill, M., Demers, D. R., Dudson, B., Ferraro, N. M., Geiger, B., Gerhardt, S., Hammond, K. C., Hudson, S., Jorge, R., Kolemen, E., Kriete, D. M., Kumar, S. T. A., Landreman, M., Lowe, C., Maurer, D. A., Nespoli, F., Pablant, N., Pueschel, M. J., Punjabi, A., Schwartz, J. A., Swanson, C. P. S., and Wright, A. M.
Subjects: Physics - Plasma Physics
Abstract: We propose to build a Flexible Stellarator Physics Facility to explore promising regions of the vast parameter space of disruption-free stellarator solutions for Fusion Pilot Plants (FPPs)., Comment: White paper submitted to FESAC subcommittee on Facilities, 8 pages
Published: 2024
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2. Observation of a drift-driven local transport regime in the island divertor of Wendelstein 7-X

Author: Flom, E, Kriete, D M, Krychowiak, M, Maaziz, N, Perseo, V, Reimold, F, Schmitz, O, Winters, V, Henke, F, Gradic, D, König, R, and Team, the W7-X
Subjects: Physics - Plasma Physics
Abstract: Measurements of the poloidal electron density and temperature distribution in the W7-X island divertor reveal the existence of two distinct scrape-off layer transport regimes. At low and intermediate densities, $T_e$ profiles across the magnetic island are hollow, with a minimum at the island O-point. Above a threshold density $\overline{n}_e \approx 5 \times 10^{19}$ m$^{-3}$, the local minimum vanishes and the $T_e$ profiles become monotonic. At the lowest studied densities, the hollow $T_e$ profiles imply an electrostatic field of up to $\textbf{E}_r \sim 6$ kV/m, which can induce $\textbf{E} \times \textbf{B}$ drifts around the island, with drift velocities of up to $\sim3$ km/s. These $\textbf{E} \times \textbf{B}$ drifts result in strong convective heat transport poloidally around the island, binormal to the magnetic field, which supports the hollow radial temperature profile and hence provides a positive feedback to the electric field. Above the threshold density, these drifts strongly diminish, presumably due to increased anomalous diffusion, which causes the profile hollowness and therefore also the radial electric field to strongly diminish. This argument is supported by comparison to EMC3-EIRENE modeling and an analytical transport analyses showing that an additional, non-diffusive transport channel is required to maintain the profile hollowness up to the densities seen in experiment, and that a poloidal drift transport channel supports such hollowness only up to certain densities., Comment: 8 pages, submitted to Nuclear Fusion
Published: 2023

3. Effect of magnetic perturbations on turbulence-flow dynamics at the L-H transition on DIII-D

Author: Kriete, D. M., McKee, G. R., Schmitz, L., Smith, D. R., Yan, Z., Morton, L. A., and Fonck, R. J.
Subjects: Physics - Plasma Physics
Abstract: Detailed 2D turbulence measurements from the DIII-D tokamak provide an explanation for how resonant magnetic perturbations (RMPs) raise the L-H power threshold $P_\textrm{LH}$ [P. Gohil et al., Nucl. Fusion 51, 103020 (2011)] in ITER-relevant, low rotation, ITER-similar-shape plasmas with favorable ion $\nabla B$ direction. RMPs simultaneously raise the turbulence decorrelation rate $\Delta \omega_D$ and reduce the flow shear rate $\omega_\textrm{shear}$ in the stationary L-mode state preceding the L-H transition, thereby disrupting the turbulence shear suppression mechanism. RMPs also reduce the Reynolds stress drive for poloidal flow, contributing to the reduction of $\omega_\textrm{shear}$ On the ~100 {\mu}s timescale of the L-H transition, RMPs reduce Reynolds-stress-driven energy transfer from turbulence to flows by an order of magnitude, challenging the energy depletion theory for the L-H trigger mechanism. In contrast, non-resonant magnetic perturbations, which do not significantly affect $P_\textrm{LH}$, do not affect $\Delta \omega_D$ and only slightly reduce $\omega_\textrm{shear}$ and Reynolds-stress-driven energy transfer., Comment: The following article has been submitted to Physics of Plasmas
Published: 2020
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4. Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X

Author: Pedersen, T, Abramovic, I, Agostinetti, P, Torres, M, Akaslompolo, S, Belloso, J, Aleynikov, P, Aleynikova, K, Alhashimi, M, Ali, A, Allen, N, Alonso, A, Anda, G, Andreeva, T, Angioni, C, Arkhipov, A, Arnold, A, Asad, W, Ascasibar, E, Aumeunier, M, Avramidis, K, Aymerich, E, Baek, S, Bahner, J, Baillod, A, Balden, M, Baldzuhn, J, Ballinger, S, Banduch, M, Bannmann, S, Navarro, A, Barbui, T, Beidler, C, Belafdil, C, Bencze, A, Benndorf, A, Beurskens, M, Biedermann, C, Biletskyi, O, Blackwell, B, Blatzheim, M, Bluhm, T, Bockenhoff, D, Bongiovi, G, Borchardt, M, Borodin, D, Boscary, J, Bosch, H, Bosmann, T, Boswirth, B, Bottger, L, Bottino, A, Bozhenkov, S, Brakel, R, Brandt, C, Brauer, T, Braune, H, Brezinsek, S, Brunner, K, Buller, S, Burhenn, R, Bussiahn, R, Buttenschon, B, Buzas, A, Bykov, V, Calvo, I, Mata, K, Caminal, I, Cannas, B, Cappa, A, Carls, A, Carovani, F, Carr, M, Carralero, D, Carvalho, B, Casas, J, Castano-Bardawil, D, Castejon, F, Chaudhary, N, Chelis, I, Chomiczewska, A, Coenen, J, Cole, M, Cordella, F, Corre, Y, Crombe, K, Cseh, G, Csillag, B, Damm, H, Day, C, de Baar, M, De la Cal, E, Degenkolbe, S, Demby, A, Denk, S, Dhard, C, Di Siena, A, Dinklage, A, Dittmar, T, Dreval, M, Drevlak, M, Drewelow, P, Drews, P, Dunai, D, Edlund, E, Effenberg, F, Ehrke, G, Endler, M, Ennis, D, Escoto, F, Estrada, T, Fable, E, Fahrenkamp, N, Fanni, A, Faustin, J, Fellinger, J, Feng, Y, Figacz, W, Flom, E, Ford, O, Fornal, T, Frerichs, H, Freundt, S, Fuchert, G, Fukuyama, M, Fullenbach, F, Gantenbein, G, Gao, Y, Garcia, K, Regana, J, Garcia-Cortes, I, Gaspar, J, Gates, D, Geiger, J, Geiger, B, Giudicotti, L, Gonzalez, A, Goriaev, A, Gradic, D, Grahl, M, Graves, J, Green, J, Grelier, E, Greuner, H, Gross, S, Grote, H, Groth, M, Gruca, M, Grulke, O, Grun, M, Arnaiz, J, Gunter, S, Haak, V, Haas, M, Hacker, P, Hakola, A, Hallenbert, A, Hammond, K, Han, X, Hansen, S, Harris, J, Hartfuss, H, Hartmann, D, Hathiramani, D, Hatzky, R, Hawke, J, Hegedus, S, Hein, B, Heinemann, B, Helander, P, Henneberg, S, Hergenhahn, U, Hidalgo, C, Hindenlang, F, Hirsch, M, Hofel, U, Hollfeld, K, Holtz, A, Hopf, D, Hoschen, D, Houry, M, Howard, J, Huang, X, Hubeny, M, Hudson, S, Ida, K, Igitkhanov, Y, Igochine, V, Illy, S, Ionita-Schrittwieser, C, Isobe, M, Jablczynska, M, Jablonski, S, Jagielski, B, Jakubowski, M, van Vuuren, A, Jelonnek, J, Jenko, F, Jensen, T, Jenzsch, H, Junghanns, P, Kaczmarczyk, J, Kallmeyer, J, Kamionka, U, Kandler, M, Kasilov, S, Kazakov, Y, Kennedy, D, Kharwandikar, A, Khokhlov, M, Kiefer, C, Killer, C, Kirschner, A, Kleiber, R, Klinger, T, Klose, S, Knauer, J, Knieps, A, Kochl, F, Kocsis, G, Kolesnichenko, Y, Konies, A, Konig, R, Kontula, J, Kornejew, P, Koschinsky, J, Kozulia, M, Kramer-Flecken, A, Krampitz, R, Krause, M, Krawczyk, N, Kremeyer, T, Krier, L, Kriete, D, Krychowiak, M, Ksiazek, I, Kubkowska, M, Kuczynski, M, Kuhner, G, Kumar, A, Kurki-Suonio, T, Kwak, S, Landreman, M, Lang, P, Langenberg, A, Laqua, H, Laube, R, Lazerson, S, Lewerentz, M, Li, C, Liang, Y, Linsmeier, C, Lion, J, Litnovsky, A, Liu, S, Lobsien, J, Loizu, J, Lore, J, Lorenz, A, Losada, U, Louche, F, Lunsford, R, Lutsenko, V, Machielsen, M, Mackel, F, Maisano-Brown, J, Maj, O, Makowski, D, Manduchi, G, Maragkoudakis, E, Marchuk, O, Marsen, S, Martines, E, Martinez-Fernandez, J, Marushchenko, M, Masuzaki, S, Maurer, D, Mayer, M, Mccarthy, K, Mccormack, O, Mcneely, P, Meister, H, Mendelevitch, B, Mendes, S, Merlo, A, Messian, A, Mielczarek, A, Mishchenko, O, Missal, B, Mitteau, R, Moiseenko, V, Mollen, A, Moncada, V, Monnich, T, Morisaki, T, Moseev, D, Motojima, G, Mulas, S, Mulsow, M, Nagel, M, Naujoks, D, Naulin, V, Neelis, T, Neilson, H, Neu, R, Neubauer, O, Neuner, U, Nicolai, D, Nielsen, S, Niemann, H, Nishiza, T, Nishizawa, T, Nuhrenberg, C, Ochoukov, R, Oelmann, J, Offermanns, G, Ogawa, K, Okamura, S, Olmanns, J, Ongena, J, Oosterbeek, J, Otte, M, Pablant, N, Alvarez, N, Pandey, A, Pasch, E, Pavlichenko, R, Pavone, A, Pawelec, E, Pechstein, G, Pelka, G, Perseo, V, Peterson, B, Pilopp, D, Pingel, S, Pisano, F, Plockl, B, Plunk, G, Poloskei, P, Pompe, B, Popov, A, Porkolab, M, Proll, J, Pueschel, M, Puiatti, M, Sitjes, A, Purps, F, Rahbarnia, K, Rasinski, M, Rasmussen, J, Reiman, A, Reimold, F, Reisner, M, Reiter, D, Richou, M, Riedl, R, Riemann, J, Risse, K, Roberg-Clark, G, Rohde, V, Romazanov, J, Rondeshagen, D, Rong, P, Rudischhauser, L, Rummel, T, Rummel, K, Runov, A, Rust, N, Ryc, L, Salembier, P, Salewski, M, Sanchez, E, Satake, S, Satheeswaran, G, Schacht, J, Scharff, E, Schauer, F, Schilling, J, Schlisio, G, Schmid, K, Schmitt, J, Schmitz, O, Schneider, W, Schneider, M, Schneider, P, Schrittwieser, R, Schroder, T, Schroder, M, Schroeder, R, Schweer, B, Schworer, D, Scott, E, Shanahan, B, Sias, G, Sichta, P, Singer, M, Sinha, P, Siplia, S, Slaby, C, Sleczka, M, Smith, H, Smoniewski, J, Sonnendrucker, E, Spolaore, M, Spring, A, Stadler, R, Stanczak, D, Stange, T, Stepanov, I, Stephey, L, Stober, J, Stroth, U, Strumberger, E, Suzuki, C, Suzuki, Y, Svensson, J, Szabolics, T, Szepesi, T, Szucs, M, Tabares, F, Tamura, N, Tancetti, A, Tantos, C, Terry, J, Thienpondt, H, Thomsen, H, Thumm, M, Travere, J, Traverso, P, Tretter, J, Trier, E, Mora, H, Tsujimura, T, Turkin, Y, Tykhyi, A, Unterberg, B, van Eeten, P, van Milligen, B, van Schoor, M, Vano, L, Varoutis, S, Vecsei, M, Vela, L, Velasco, J, Vervier, M, Vianello, N, Viebke, H, Vilbrandt, R, Vogel, G, Vogt, N, Volkhausen, C, von Stechow, A, Wagner, F, Wang, E, Wang, H, Warmer, F, Wauters, T, Wegener, L, Wegner, T, Weir, G, Wenzel, U, White, A, Wilde, F, Wilms, F, Windisch, T, Winkler, M, Winter, A, Winters, V, Wolf, R, Wright, A, Wurden, G, Xanthopoulos, P, Xu, S, Yamada, H, Yamaguchi, H, Yokoyama, M, Yoshinuma, M, Yu, Q, Zamanov, M, Zanini, M, Zarnstorff, M, Zhang, D, Zhou, S, Zhu, J, Zhu, C, Zilker, M, Zocco, A, Zohm, H, Zoletnik, S, Zsuga, L, Pedersen T. S., Abramovic I., Agostinetti P., Torres M. A., Akaslompolo S., Belloso J. A., Aleynikov P., Aleynikova K., Alhashimi M., Ali A., Allen N., Alonso A., Anda G., Andreeva T., Angioni C., Arkhipov A., Arnold A., Asad W., Ascasibar E., Aumeunier M. -H., Avramidis K., Aymerich E., Baek S. -G., Bahner J., Baillod A., Balden M., Baldzuhn J., Ballinger S., Banduch M., Bannmann S., Navarro A. B., Barbui T., Beidler C., Belafdil C., Bencze A., Benndorf A., Beurskens M., Biedermann C., Biletskyi O., Blackwell B., Blatzheim M., Bluhm T., Bockenhoff D., Bongiovi G., Borchardt M., Borodin D., Boscary J., Bosch H., Bosmann T., Boswirth B., Bottger L., Bottino A., Bozhenkov S., Brakel R., Brandt C., Brauer T., Braune H., Brezinsek S., Brunner K., Buller S., Burhenn R., Bussiahn R., Buttenschon B., Buzas A., Bykov V., Calvo I., Mata K. C., Caminal I., Cannas B., Cappa A., Carls A., Carovani F., Carr M., Carralero D., Carvalho B., Casas J., Castano-Bardawil D., Castejon F., Chaudhary N., Chelis I., Chomiczewska A., Coenen J. W., Cole M., Cordella F., Corre Y., Crombe K., Cseh G., Csillag B., Damm H., Day C., de Baar M., De la Cal E., Degenkolbe S., Demby A., Denk S., Dhard C., Di Siena A., Dinklage A., Dittmar T., Dreval M., Drevlak M., Drewelow P., Drews P., Dunai D., Edlund E., Effenberg F., Ehrke G., Endler M., Ennis D. A., Escoto F. J., Estrada T., Fable E., Fahrenkamp N., Fanni A., Faustin J., Fellinger J., Feng Y., Figacz W., Flom E., Ford O., Fornal T., Frerichs H., Freundt S., Fuchert G., Fukuyama M., Fullenbach F., Gantenbein G., Gao Y., Garcia K., Regana J. M. G., Garcia-Cortes I., Gaspar J., Gates D. A., Geiger J., Geiger B., Giudicotti L., Gonzalez A., Goriaev A., Gradic D., Grahl M., Graves J. P., Green J., Grelier E., Greuner H., Gross S., Grote H., Groth M., Gruca M., Grulke O., Grun M., Arnaiz J. G., Gunter S., Haak V., Haas M., Hacker P., Hakola A., Hallenbert A., Hammond K., Han X., Hansen S. K., Harris J. H., Hartfuss H., Hartmann D., Hathiramani D., Hatzky R., Hawke J., Hegedus S., Hein B., Heinemann B., Helander P., Henneberg S., Hergenhahn U., Hidalgo C., Hindenlang F., Hirsch M., Hofel U., Hollfeld K. P., Holtz A., Hopf D., Hoschen D., Houry M., Howard J., Huang X., Hubeny M., Hudson S., Ida K., Igitkhanov Y., Igochine V., Illy S., Ionita-Schrittwieser C., Isobe M., Jablczynska M., Jablonski S., Jagielski B., Jakubowski M., van Vuuren A. J., Jelonnek J., Jenko F., Jensen T., Jenzsch H., Junghanns P., Kaczmarczyk J., Kallmeyer J., Kamionka U., Kandler M., Kasilov S., Kazakov Y., Kennedy D., Kharwandikar A., Khokhlov M., Kiefer C., Killer C., Kirschner A., Kleiber R., Klinger T., Klose S., Knauer J., Knieps A., Kochl F., Kocsis G., Kolesnichenko Ya. I., Konies A., Konig R., Kontula J., Kornejew P., Koschinsky J., Kozulia M. M., Kramer-Flecken A., Krampitz R., Krause M., Krawczyk N., Kremeyer T., Krier L., Kriete D. M., Krychowiak M., Ksiazek I., Kubkowska M., Kuczynski M., Kuhner G., Kumar A., Kurki-Suonio T., Kwak S., Landreman M., Lang P. T., Langenberg A., Laqua H. P., Laqua H., Laube R., Lazerson S., Lewerentz M., Li C., Liang Y., Linsmeier Ch., Lion J., Litnovsky A., Liu S., Lobsien J., Loizu J., Lore J., Lorenz A., Losada U., Louche F., Lunsford R., Lutsenko V., Machielsen M., Mackel F., Maisano-Brown J., Maj O., Makowski D., Manduchi G., Maragkoudakis E., Marchuk O., Marsen S., Martines E., Martinez-Fernandez J., Marushchenko M., Masuzaki S., Maurer D., Mayer M., McCarthy K. J., McCormack O., McNeely P., Meister H., Mendelevitch B., Mendes S., Merlo A., Messian A., Mielczarek A., Mishchenko O., Missal B., Mitteau R., Moiseenko V. E., Mollen A., Moncada V., Monnich T., Morisaki T., Moseev D., Motojima G., Mulas S., Mulsow M., Nagel M., Naujoks D., Naulin V., Neelis T., Neilson H., Neu R., Neubauer O., Neuner U., Nicolai D., Nielsen S. K., Niemann H., Nishiza T., Nishizawa T., Nuhrenberg C., Ochoukov R., Oelmann J., Offermanns G., Ogawa K., Okamura S., Olmanns J., Ongena J., Oosterbeek J., Otte M., Pablant N., Alvarez N. P., Pandey A., Pasch E., Pavlichenko R., Pavone A., Pawelec E., Pechstein G., Pelka G., Perseo V., Peterson B., Pilopp D., Pingel S., Pisano F., Plockl B., Plunk G., Poloskei P., Pompe B., Popov A., Porkolab M., Proll J., Pueschel M. J., Puiatti M. -E., Sitjes A. P., Purps F., Rahbarnia K., Rasinski M., Rasmussen J., Reiman A., Reimold F., Reisner M., Reiter D., Richou M., Riedl R., Riemann J., Risse K., Roberg-Clark G., Rohde V., Romazanov J., Rondeshagen D., Rong P., Rudischhauser L., Rummel T., Rummel K., Runov A., Rust N., Ryc L., Salembier P., Salewski M., Sanchez E., Satake S., Satheeswaran G., Schacht J., Scharff E., Schauer F., Schilling J., Schlisio G., Schmid K., Schmitt J., Schmitz O., Schneider W., Schneider M., Schneider P., Schrittwieser R., Schroder T., Schroder M., Schroeder R., Schweer B., Schworer D., Scott E., Shanahan B., Sias G., Sichta P., Singer M., Sinha P., Siplia S., Slaby C., Sleczka M., Smith H., Smoniewski J., Sonnendrucker E., Spolaore M., Spring A., Stadler R., Stanczak D., Stange T., Stepanov I., Stephey L., Stober J., Stroth U., Strumberger E., Suzuki C., Suzuki Y., Svensson J., Szabolics T., Szepesi T., Szucs M., Tabares F. L., Tamura N., Tancetti A., Tantos C., Terry J., Thienpondt H., Thomsen H., Thumm M., Travere J. M., Traverso P., Tretter J., Trier E., Mora H. T., Tsujimura T., Turkin Y., Tykhyi A., Unterberg B., van Eeten P., van Milligen B. Ph., van Schoor M., Vano L., Varoutis S., Vecsei M., Vela L., Velasco J. L., Vervier M., Vianello N., Viebke H., Vilbrandt R., Vogel G., Vogt N., Volkhausen C., von Stechow A., Wagner F., Wang E., Wang H., Warmer F., Wauters T., Wegener L., Wegner T., Weir G., Wenzel U., White A., Wilde F., Wilms F., Windisch T., Winkler M., Winter A., Winters V., Wolf R., Wright A. M., Wurden G. A., Xanthopoulos P., Xu S., Yamada H., Yamaguchi H., Yokoyama M., Yoshinuma M., Yu Q., Zamanov M., Zanini M., Zarnstorff M., Zhang D., Zhou S., Zhu J., Zhu C., Zilker M., Zocco A., Zohm H., Zoletnik S., Zsuga L., Pedersen, T, Abramovic, I, Agostinetti, P, Torres, M, Akaslompolo, S, Belloso, J, Aleynikov, P, Aleynikova, K, Alhashimi, M, Ali, A, Allen, N, Alonso, A, Anda, G, Andreeva, T, Angioni, C, Arkhipov, A, Arnold, A, Asad, W, Ascasibar, E, Aumeunier, M, Avramidis, K, Aymerich, E, Baek, S, Bahner, J, Baillod, A, Balden, M, Baldzuhn, J, Ballinger, S, Banduch, M, Bannmann, S, Navarro, A, Barbui, T, Beidler, C, Belafdil, C, Bencze, A, Benndorf, A, Beurskens, M, Biedermann, C, Biletskyi, O, Blackwell, B, Blatzheim, M, Bluhm, T, Bockenhoff, D, Bongiovi, G, Borchardt, M, Borodin, D, Boscary, J, Bosch, H, Bosmann, T, Boswirth, B, Bottger, L, Bottino, A, Bozhenkov, S, Brakel, R, Brandt, C, Brauer, T, Braune, H, Brezinsek, S, Brunner, K, Buller, S, Burhenn, R, Bussiahn, R, Buttenschon, B, Buzas, A, Bykov, V, Calvo, I, Mata, K, Caminal, I, Cannas, B, Cappa, A, Carls, A, Carovani, F, Carr, M, Carralero, D, Carvalho, B, Casas, J, Castano-Bardawil, D, Castejon, F, Chaudhary, N, Chelis, I, Chomiczewska, A, Coenen, J, Cole, M, Cordella, F, Corre, Y, Crombe, K, Cseh, G, Csillag, B, Damm, H, Day, C, de Baar, M, De la Cal, E, Degenkolbe, S, Demby, A, Denk, S, Dhard, C, Di Siena, A, Dinklage, A, Dittmar, T, Dreval, M, Drevlak, M, Drewelow, P, Drews, P, Dunai, D, Edlund, E, Effenberg, F, Ehrke, G, Endler, M, Ennis, D, Escoto, F, Estrada, T, Fable, E, Fahrenkamp, N, Fanni, A, Faustin, J, Fellinger, J, Feng, Y, Figacz, W, Flom, E, Ford, O, Fornal, T, Frerichs, H, Freundt, S, Fuchert, G, Fukuyama, M, Fullenbach, F, Gantenbein, G, Gao, Y, Garcia, K, Regana, J, Garcia-Cortes, I, Gaspar, J, Gates, D, Geiger, J, Geiger, B, Giudicotti, L, Gonzalez, A, Goriaev, A, Gradic, D, Grahl, M, Graves, J, Green, J, Grelier, E, Greuner, H, Gross, S, Grote, H, Groth, M, Gruca, M, Grulke, O, Grun, M, Arnaiz, J, Gunter, S, Haak, V, Haas, M, Hacker, P, Hakola, A, Hallenbert, A, Hammond, K, Han, X, Hansen, S, Harris, J, Hartfuss, H, Hartmann, D, Hathiramani, D, Hatzky, R, Hawke, J, Hegedus, S, Hein, B, Heinemann, B, Helander, P, Henneberg, S, Hergenhahn, U, Hidalgo, C, Hindenlang, F, Hirsch, M, Hofel, U, Hollfeld, K, Holtz, A, Hopf, D, Hoschen, D, Houry, M, Howard, J, Huang, X, Hubeny, M, Hudson, S, Ida, K, Igitkhanov, Y, Igochine, V, Illy, S, Ionita-Schrittwieser, C, Isobe, M, Jablczynska, M, Jablonski, S, Jagielski, B, Jakubowski, M, van Vuuren, A, Jelonnek, J, Jenko, F, Jensen, T, Jenzsch, H, Junghanns, P, Kaczmarczyk, J, Kallmeyer, J, Kamionka, U, Kandler, M, Kasilov, S, Kazakov, Y, Kennedy, D, Kharwandikar, A, Khokhlov, M, Kiefer, C, Killer, C, Kirschner, A, Kleiber, R, Klinger, T, Klose, S, Knauer, J, Knieps, A, Kochl, F, Kocsis, G, Kolesnichenko, Y, Konies, A, Konig, R, Kontula, J, Kornejew, P, Koschinsky, J, Kozulia, M, Kramer-Flecken, A, Krampitz, R, Krause, M, Krawczyk, N, Kremeyer, T, Krier, L, Kriete, D, Krychowiak, M, Ksiazek, I, Kubkowska, M, Kuczynski, M, Kuhner, G, Kumar, A, Kurki-Suonio, T, Kwak, S, Landreman, M, Lang, P, Langenberg, A, Laqua, H, Laube, R, Lazerson, S, Lewerentz, M, Li, C, Liang, Y, Linsmeier, C, Lion, J, Litnovsky, A, Liu, S, Lobsien, J, Loizu, J, Lore, J, Lorenz, A, Losada, U, Louche, F, Lunsford, R, Lutsenko, V, Machielsen, M, Mackel, F, Maisano-Brown, J, Maj, O, Makowski, D, Manduchi, G, Maragkoudakis, E, Marchuk, O, Marsen, S, Martines, E, Martinez-Fernandez, J, Marushchenko, M, Masuzaki, S, Maurer, D, Mayer, M, Mccarthy, K, Mccormack, O, Mcneely, P, Meister, H, Mendelevitch, B, Mendes, S, Merlo, A, Messian, A, Mielczarek, A, Mishchenko, O, Missal, B, Mitteau, R, Moiseenko, V, Mollen, A, Moncada, V, Monnich, T, Morisaki, T, Moseev, D, Motojima, G, Mulas, S, Mulsow, M, Nagel, M, Naujoks, D, Naulin, V, Neelis, T, Neilson, H, Neu, R, Neubauer, O, Neuner, U, Nicolai, D, Nielsen, S, Niemann, H, Nishiza, T, Nishizawa, T, 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Abstract: We present recent highlights from the most recent operation phases of Wendelstein 7-X, the most advanced stellarator in the world. Stable detachment with good particle exhaust, low impurity content, and energy confinement times exceeding 100 ms, have been maintained for tens of seconds. Pellet fueling allows for plasma phases with reduced ion-temperature-gradient turbulence, and during such phases, the overall confinement is so good (energy confinement times often exceeding 200 ms) that the attained density and temperature profiles would not have been possible in less optimized devices, since they would have had neoclassical transport losses exceeding the heating applied in W7-X. This provides proof that the reduction of neoclassical transport through magnetic field optimization is successful. W7-X plasmas generally show good impurity screening and high plasma purity, but there is evidence of longer impurity confinement times during turbulence-suppressed phases.
Published: 2022

5. Effects of drifts on scrape-off layer transport in W7-X

Author: Kriete, D. M., Pandey, A., Perseo, V., Schmitt, J. C., Ennis, D. A., Gradic, D., Hammond, K. C., Jakubowski, M., Killer, C., König, R., Maurer, D. A., Reimold, F., Winters, V., Beurskens, M. N. A., Bozhenkov, S. A., Brunner, K. J., Fuchert, G., Knauer, J., Pasch, E., Scott, E. R., Gantenbein, Gerd, Illy, Stefan, Jelonnek, John, Krier, Laurent, Thumm, Manfred, Team, the W-X., and W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society
Subjects: Nuclear and High Energy Physics, Technology, Condensed Matter Physics, ddc:600
Abstract: Drifts affect particle, momentum, and energy transport in the scrape-off layer (SOL) of tokamaks and stellarators, altering plasma flows and creating asymmetries between divertors. To understand how drifts affect SOL transport in the W7-X island divertor, an experiment was performed to compare plasmas with matched core parameters but opposite magnetic field directions, and therefore opposite drift transport directions. Parallel flow measurements made with coherence imaging spectroscopy are interpreted with the aid of a diagnostic forward model and a 1D simple SOL model that includes the E × B drift. In low-density plasmas ( n ‾ e < 2 × 10 19 m−3), the poloidal E × B drift induces a large poloidal density asymmetry within the island SOL, as measured by divertor Langmuir probes. This in turn causes the parallel flow stagnation point to shift from the position halfway between targets to the X-point in the drift direction, leading to near-unidirectional flow throughout the SOL. As density increases, the effects of the poloidal E × B drift decrease substantially, resulting in a smaller density asymmetry and the development of a counter-streaming flow pattern. For the entire density range probed in this experiment ( n ‾ e = 1.5 − 6 × 10 19 m−3), the experimental observations are more consistent with the effects of the poloidal E × B drift than the radial E × B drift.
Published: 2023

6. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author: Fenstermacher, M.E., Abbate, J., Abe, S., Abrams, T., Adams, M., Adamson, B., Aiba, N., Akiyama, T., Aleynikov, P., Allen, E., Allen, S., Anand, H., Anderson, J., Andrew, Y., Andrews, T., Appelt, D., Arbon, R., Ashikawa, N., Ashourvan, A., Aslin, M., Asnis, Y., Austin, M., Ayala, D., Bak, J., Bandyopadhyay, I., Banerjee, S., Barada, K., Bardoczi, L., Barr, J., Bass, E., Battaglia, D., Battey, A., Baumgartner, W., Baylor, L., Beckers, J., Beidler, M., Belli, E., Berkery, J., Bernard, T., Bertelli, N., Beurskens, M., Bielajew, R., Bilgili, S., Biswas, B., Blondel, S., Boedo, J., Bogatu, I., Boivin, R., Bolzonella, T., Bongard, M., Bonnin, X., Bonoli, P., Bonotto, M., Bortolon, A., Bose, S., Bosviel, N., Bouwmans, S., Boyer, M., Boyes, W., Bradley, L., Brambila, R., Brennan, D., Bringuier, S., Brodsky, L., Brookman, M., Brooks, J., Brower, D., Brown, G., Brown, W., Burke, M., Burrell, K., Butler, K., Buttery, R., Bykov, I., Byrne, P., Cacheris, A., Callahan, K., Callen, J., Campbell, G., Candy, J., Canik, J., Cano-Megias, P., Cao, N., Carayannopoulos, L., Carlstrom, T., Carrig, W., Carter, T., Cary, W., Casali, L., Cengher, M., Cespedes Paz, G., Chaban, R., Chan, V., Chapman, B., Char, I., Chattopadhyay, A., Chen, R., Chen, J., Chen, X., Chen, M., Chen, Z., Choi, M., Choi, W., Choi, G., Chousal, L., Chrobak, C., Chrystal, C., Chung, Y., Churchill, R., Cianciosa, M., Clark, J., Clement, M., Coda, S., Cole, A., Collins, C., Conlin, W., Cooper, A., Cordell, J., Coriton, B., Cote, T., Cothran, J., Creely, A., Crocker, N., Crowe, C., Crowley, B., Crowley, T., Cruz-Zabala, D., Cummings, D., Curie, M., Curreli, D., Dal Molin, A., Dannels, B., Dautt-Silva, A., Davda, K., De Tommasi, G., de Vries, P., Degrandchamp, G., Degrassie, J., Demers, D., Denk, S., Depasquale, S., Deshazer, E., Diallo, A., Diem, S., Dimits, A., Ding, R., Ding, S., Ding, W., Do, T., Doane, J., Dong, G., Donovan, D., Drake, J., Drews, W., Drobny, J., Du, X., Du, H., Duarte, V., Dudt, D., Dunn, C., Duran, J., Dvorak, A., Effenberg, F., Eidietis, N., Elder, D., Eldon, D., Ellis, R., Elwasif, W., Ennis, D., Erickson, K., Ernst, D., Fasciana, M., Fedorov, D., Feibush, E., Ferraro, N., Ferreira, J., Ferron, J., Fimognari, P., Finkenthal, D., Fitzpatrick, R., Fox, P., Fox, W., Frassinetti, L., Frerichs, H., Frye, H., Fu, Y., Gage, K., Galdon Quiroga, J., Gallo, A., Gao, Q., Garcia, A., Garcia Munoz, M., Garnier, D., Garofalo, A., Gattuso, A., Geng, D., Gentle, K., Ghosh, D., Giacomelli, L., Gibson, S., Gilson, E., Giroud, C., Glass, F., Glasser, A., Glibert, D., Gohil, P., Gomez, R., Gomez, S., Gong, X., Gonzales, E., Goodman, A., Gorelov, Y., Graber, V., Granetz, R., Gray, T., Green, D., Greenfield, C., Greenwald, M., Grierson, B., Groebner, R., Grosnickle, W., Groth, M., Grunloh, H., Gu, S., Guo, W., Guo, H., Gupta, P., Guterl, J., Guttenfelder, W., Guzman, T., Haar, S., Hager, R., Hahn, S., Halfmoon, M., Hall, T., Hallatschek, K., Halpern, F., Hammett, G., Han, H., Hansen, E., Hansen, C., Hansink, M., Hanson, J., Hanson, M., Hao, G., Harris, A., Harvey, R., Haskey, S., Hassan, E., Hassanein, A., Hatch, D., Hawryluk, R., Hayashi, W., Heidbrink, W., Herfindal, J., Hicok, J., Hill, D., Hinson, E., Holcomb, C., Holland, L., Holland, C., Hollmann, E., Hollocombe, J., Holm, A., Holmes, I., Holtrop, K., Honda, M., Hong, R., Hood, R., Horton, A., Horvath, L., Hosokawa, M., Houshmandyar, S., Howard, N., Howell, E., Hoyt, D., Hu, W., Hu, Y., Hu, Q., Huang, J., Huang, Y., Hughes, J., Human, T., Humphreys, D., Huynh, P., Hyatt, A., Ibanez, C., Ibarra, L., Icasas, R., Ida, K., Igochine, V., In, Y., Inoue, S., Isayama, A., Izacard, O., Izzo, V., Jackson, A., Jacobsen, G., Jaervinen, A., Jalalvand, A., Janhunen, J., Jardin, S., Jarleblad, H., Jeon, Y., Ji, H., Jian, X., Joffrin, E., Johansen, A., Johnson, C., Johnson, T., Jones, C., Joseph, I., Jubas, D., Junge, B., Kalb, W., Kalling, R., Kamath, C., Kang, J., Kaplan, D., Kaptanoglu, A., Kasdorf, S., Kates-Harbeck, J., Kazantzidis, P., Kellman, A., Kellman, D., Kessel, C., Khumthong, K., Kim, E., Kim, H., Kim, J., Kim, S., Kim, K., Kim, C., Kimura, W., King, M., King, J., Kinsey, J., Kirk, A., Kiyan, B., Kleiner, A., Klevarova, V., Knapp, R., Knolker, M., Ko, W., Kobayashi, T., Koch, E., Kochan, M., Koel, B., Koepke, M., Kohn, A., Kolasinski, R., Kolemen, E., Kostadinova, E., Kostuk, M., Kramer, G., Kriete, D., Kripner, L., Kubota, S., Kulchar, J., Kwon, K., La Haye, R., Laggner, F., Lan, H., Lantsov, R., Lao, L., Lasa Esquisabel, A., Lasnier, C., Lau, C., Leard, B., Lee, J., Lee, R., Lee, M., Lee, Y., Lee, C., Lee, S., Lehnen, M., Leonard, A., Leppink, E., Lesher, M., Lestz, J., Leuer, J., Leuthold, N., Li, X., Li, K., Li, E., Li, G., Li, L., Li, Z., Li, J., Li, Y., Lin, Z., Lin, D., Liu, X., Liu, J., Liu, Y., Liu, T., Liu, C., Liu, Z., Liu, D., Liu, A., Loarte-Prieto, A., Lodestro, L., Logan, N., Lohr, J., Lombardo, B., Lore, J., Luan, Q., Luce, T., Luda Di Cortemiglia, T., Luhmann, N., Lunsford, R., Luo, Z., Lvovskiy, A., Lyons, B., Ma, X., Madruga, M., Madsen, B., Maggi, C., Maheshwari, K., Mail, A., Mailloux, J., Maingi, R., Major, M., Makowski, M., Manchanda, R., Marini, C., Marinoni, A., Maris, A., Markovic, T., Marrelli, L., Martin, E., Mateja, J., Matsunaga, G., Maurizio, R., Mauzey, P., Mauzey, D., McArdle, G., McClenaghan, J., McCollam, K., McDevitt, C., McKay, K., McKee, G., McLean, A., Mehta, V., Meier, E., Menard, J., Meneghini, O., Merlo, G., Messer, S., Meyer, W., Michael, C., Michoski, C., Milne, P., Minet, G., Misleh, A., Mitrishkin, Y., Moeller, C., Montes, K., Morales, M., Mordijck, S., Moreau, D., Morosohk, S., Morris, P., Morton, L., Moser, A., Moyer, R., Moynihan, C., Mrazkova, T., Mueller, D., Munaretto, S., Munoz Burgos, J., Murphy, C., Murphy, K., Muscatello, C., Myers, C., Nagy, A., Nandipati, G., Navarro, M., Nave, F., Navratil, G., Nazikian, R., Neff, A., Neilson, G., Neiser, T., Neiswanger, W., Nelson, D., Nelson, A., Nespoli, F., Nguyen, R., Nguyen, L., Nguyen, X., Nichols, J., Nocente, M., Nogami, S., Noraky, S., Norausky, N., Nornberg, M., Nygren, R., Odstrcil, T., Ogas, D., Ogorman, T., Ohdachi, S., Ohtani, Y., Okabayashi, M., Okamoto, M., Olavson, L., Olofsson, E., Omullane, M., Oneill, R., Orlov, D., Orvis, W., Osborne, T., Pace, D., Paganini Canal, G., Pajares Martinez, A., Palacios, L., Pan, C., Pan, Q., Pandit, R., Pandya, M., Pankin, A., Park, Y., Park, J., Parker, S., Parks, P., Parsons, M., Patel, B., Pawley, C., Paz-Soldan, C., Peebles, W., Pelton, S., Perillo, R., Petty, C., Peysson, Y., Pierce, D., Pigarov, A., Pigatto, L., Piglowski, D., Pinches, S., Pinsker, R., Piovesan, P., Piper, N., Pironti, A., Pitts, R., Pizzo, J., Plank, U., Podesta, M., Poli, E., Poli, F., Ponce, D., Popovic, Z., Porkolab, M., Porter, G., Powers, C., Powers, S., Prater, R., Pratt, Q., Pusztai, I., Qian, J., Qin, X., Ra, O., Rafiq, T., Raines, T., Raman, R., Rauch, J., Raymond, A., Rea, C., Reich, M., Reiman, A., 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A., Snyder, P., Solano, E., Solomon, W., Song, J., Sontag, A., Soukhanovskii, V., Spendlove, J., Spong, D., Squire, J., Srinivasan, C., Stacey, W., Staebler, G., Stagner, L., Stange, T., Stangeby, P., Stefan, R., Stemprok, R., Stephan, D., Stillerman, J., Stoltzfus-Dueck, T., Stonecipher, W., Storment, S., Strait, E., Su, D., Sugiyama, L., Sun, Y., Sun, P., Sun, Z., Sun, A., Sundstrom, D., Sung, C., Sungcoco, J., Suttrop, W., Suzuki, Y., Suzuki, T., Svyatkovskiy, A., Swee, C., Sweeney, R., Sweetnam, C., Szepesi, G., Takechi, M., Tala, T., Tanaka, K., Tang, X., Tang, S., Tao, Y., Tao, R., Taussig, D., Taylor, T., Teixeira, K., Teo, K., Theodorsen, A., Thomas, D., Thome, K., Thorman, A., Thornton, A., Ti, A., Tillack, M., Timchenko, N., Tinguely, R., Tompkins, R., Tooker, J., Torrezan De Sousa, A., Trevisan, G., Tripathi, S., Trujillo Ochoa, A., Truong, D., Tsui, C., Turco, F., Turnbull, A., Umansky, M., Unterberg, E., Vaezi, P., Vail, P., Valdez, J., Valkis, W., Van Compernolle, B., Van Galen, J., van Kampen, R., Van Zeeland, M., Verdoolaege, G., Vianello, N., Victor, B., Viezzer, E., Vincena, S., Wade, M., Waelbroeck, F., Wai, J., Wakatsuki, T., Walker, M., Wallace, G., Waltz, R., Wampler, W., Wang, L., Wang, H., Wang, Y., Wang, Z., Wang, G., Ward, S., Watkins, M., Watkins, J., Wehner, W., Wei, Y., Weiland, M., Weisberg, D., Welander, A., White, A., White, R., Wiesen, S., Wilcox, R., Wilks, T., Willensdorfer, M., Wilson, H., Wingen, A., Wolde, M., Wolff, M., Woller, K., Wolz, A., Wong, H., Woodruff, S., Wu, M., Wu, Y., Wukitch, S., Wurden, G., Xiao, W., Xie, R., Xing, Z., Xu, X., Xu, C., Xu, G., Yan, Z., Yang, X., Yang, S., Yokoyama, T., Yoneda, R., Yoshida, M., You, K., Younkin, T., Yu, J., Yu, M., Yu, G., Yuan, Q., Zaidenberg, L., Zakharov, L., Zamengo, A., Zamperini, S., Zarnstorff, M., Zeger, E., Zeller, K., Zeng, L., Zerbini, M., Zhang, L., Zhang, X., Zhang, R., Zhang, B., Zhang, J., Zhao, L., Zhao, B., Zheng, Y., Zheng, L., Zhu, B., Zhu, J., Zhu, Y., Zsutty, M., Zuin, M., Fenstermacher, M.E., Abbate, J., Abe, S., Abrams, T., Adams, M., Adamson, B., Aiba, N., Akiyama, T., Aleynikov, P., Allen, E., Allen, S., Anand, H., Anderson, J., Andrew, Y., Andrews, T., Appelt, D., Arbon, R., Ashikawa, N., Ashourvan, A., Aslin, M., Asnis, Y., Austin, M., Ayala, D., Bak, J., Bandyopadhyay, I., Banerjee, S., Barada, K., Bardoczi, L., Barr, J., Bass, E., Battaglia, D., Battey, A., Baumgartner, W., Baylor, L., Beckers, J., Beidler, M., Belli, E., Berkery, J., Bernard, T., Bertelli, N., Beurskens, M., Bielajew, R., Bilgili, S., Biswas, B., Blondel, S., Boedo, J., Bogatu, I., Boivin, R., Bolzonella, T., Bongard, M., Bonnin, X., Bonoli, P., Bonotto, M., Bortolon, A., Bose, S., Bosviel, N., Bouwmans, S., Boyer, M., Boyes, W., Bradley, L., Brambila, R., Brennan, D., Bringuier, S., Brodsky, L., Brookman, M., Brooks, J., Brower, D., Brown, G., Brown, W., Burke, M., Burrell, K., Butler, K., Buttery, R., Bykov, I., Byrne, P., Cacheris, A., Callahan, K., Callen, J., Campbell, G., Candy, J., Canik, J., Cano-Megias, P., Cao, N., Carayannopoulos, L., Carlstrom, T., Carrig, W., Carter, T., Cary, W., Casali, L., Cengher, M., Cespedes Paz, G., Chaban, R., Chan, V., Chapman, B., Char, I., Chattopadhyay, A., Chen, R., Chen, J., Chen, X., Chen, M., Chen, Z., Choi, M., Choi, W., Choi, G., Chousal, L., Chrobak, C., Chrystal, C., Chung, Y., Churchill, R., Cianciosa, M., Clark, J., Clement, M., Coda, S., Cole, A., Collins, C., Conlin, W., Cooper, A., Cordell, J., Coriton, B., Cote, T., Cothran, J., Creely, A., Crocker, N., Crowe, C., Crowley, B., Crowley, T., Cruz-Zabala, D., Cummings, D., Curie, M., Curreli, D., Dal Molin, A., Dannels, B., Dautt-Silva, A., Davda, K., De Tommasi, G., de Vries, P., Degrandchamp, G., Degrassie, J., Demers, D., Denk, S., Depasquale, S., Deshazer, E., Diallo, A., Diem, S., Dimits, A., Ding, R., Ding, S., Ding, W., Do, T., Doane, J., Dong, G., Donovan, D., Drake, J., Drews, W., Drobny, J., Du, X., Du, H., Duarte, V., Dudt, D., 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M., and Zuin, M.
Abstract: DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices. This is done through a focus on innovations to provide solutions for high performance long pulse operation, coupled with fundamental plasma physics understanding and model validation, to drive scenario development by integrating high performance core and boundary plasmas. Substantial increases in off-axis current drive efficiency from an innovative top launch system for EC power, and in pressure broadening for Alfven eigenmode control from a co-/counter-I p steerable off-axis neutral beam, all improve the prospects for optimization of future long pulse/steady state high performance tokamak operation. Fundamental studies into the modes that drive the evolution of the pedestal pressure profile and electron vs ion heat flux validate predictive models of pedestal recovery after ELMs. Understanding the physics mechanisms of ELM control and density pumpout by 3D magnetic perturbation fields leads to confident predictions for ITER and future devices. Validated modeling of high-Z shattered pellet injection for disruption mitigation, runaway electron dissipation, and techniques for disruption prediction and avoidance including machine learning, give confidence in handling disruptivity for future devices. For the non-nuclear phase of ITER, two actuators are identified to lower the L-H threshold power in hydrogen plasmas. With this physics understanding and suite of capabilities, a high poloidal beta optimized-core scenario with an internal transport barrier that projects nearly to Q = 10 in ITER at ∼8 MA was coupled to a detached divertor, and a near super H-mode optimized-pedestal scenario with co-I p beam injection was coupled to a radiative divertor. The hybrid core scenario was achieved directly, without the need for anomalous current diffusion, using off-axis current drive actuators. Also, a controller to assess proximity to stability limit
Published: 2022

7. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author: Fenstermacher, M, Abbate, J, Abe, S, Abrams, T, Adams, M, Adamson, B, Aiba, N, Akiyama, T, Aleynikov, P, Allen, E, Allen, S, Anand, H, Anderson, J, Andrew, Y, Andrews, T, Appelt, D, Arbon, R, Ashikawa, N, Ashourvan, A, Aslin, M, Asnis, Y, Austin, M, Ayala, D, Bak, J, Bandyopadhyay, I, Banerjee, S, Barada, K, Bardoczi, L, Barr, J, Bass, E, Battaglia, D, Battey, A, Baumgartner, W, Baylor, L, Beckers, J, Beidler, M, Belli, E, Berkery, J, Bernard, T, Bertelli, N, Beurskens, M, Bielajew, R, Bilgili, S, Biswas, B, Blondel, S, Boedo, J, Bogatu, I, Boivin, R, Bolzonella, T, Bongard, M, Bonnin, X, Bonoli, P, Bonotto, M, Bortolon, A, Bose, S, Bosviel, N, Bouwmans, S, Boyer, M, Boyes, W, Bradley, L, Brambila, R, Brennan, D, Bringuier, S, Brodsky, L, Brookman, M, Brooks, J, Brower, D, Brown, G, Brown, W, Burke, M, Burrell, K, Butler, K, Buttery, R, Bykov, I, Byrne, P, Cacheris, A, Callahan, K, Callen, J, Campbell, G, Candy, J, Canik, J, Cano-Megias, P, Cao, N, Carayannopoulos, L, Carlstrom, T, Carrig, W, Carter, T, Cary, W, Casali, L, Cengher, M, Paz, G, Chaban, R, Chan, V, Chapman, B, Char, I, Chattopadhyay, A, Chen, R, Chen, J, Chen, X, Chen, M, Chen, Z, Choi, M, Choi, W, Choi, G, Chousal, L, Chrobak, C, Chrystal, C, Chung, Y, Churchill, R, Cianciosa, M, Clark, J, Clement, M, Coda, S, Cole, A, Collins, C, Conlin, W, Cooper, A, Cordell, J, Coriton, B, Cote, T, Cothran, J, Creely, A, Crocker, N, Crowe, C, Crowley, B, Crowley, T, Cruz-Zabala, D, Cummings, D, Curie, M, Curreli, D, Dal Molin, A, Dannels, B, Dautt-Silva, A, Davda, K, De Tommasi, G, De Vries, P, Degrandchamp, G, Degrassie, J, Demers, D, Denk, S, Depasquale, S, Deshazer, E, Diallo, A, Diem, S, Dimits, A, Ding, R, Ding, S, Ding, W, Do, T, Doane, J, Dong, G, Donovan, D, Drake, J, Drews, W, Drobny, J, Du, X, Du, H, Duarte, V, Dudt, D, Dunn, C, Duran, J, Dvorak, A, Effenberg, F, Eidietis, N, Elder, D, Eldon, D, Ellis, R, Elwasif, W, Ennis, D, Erickson, K, Ernst, D, Fasciana, M, Fedorov, D, Feibush, E, 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Abstract: DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices. This is done through a focus on innovations to provide solutions for high performance long pulse operation, coupled with fundamental plasma physics understanding and model validation, to drive scenario development by integrating high performance core and boundary plasmas. Substantial increases in off-axis current drive efficiency from an innovative top launch system for EC power, and in pressure broadening for Alfven eigenmode control from a co-/counter-I (p) steerable off-axis neutral beam, all improve the prospects for optimization of future long pulse/steady state high performance tokamak operation. Fundamental studies into the modes that drive the evolution of the pedestal pressure profile and electron vs ion heat flux validate predictive models of pedestal recovery after ELMs. Understanding the physics mechanisms of ELM control and density pumpout by 3D magnetic perturbation fields leads to confident predictions for ITER and future devices. Validated modeling of high-Z shattered pellet injection for disruption mitigation, runaway electron dissipation, and techniques for disruption prediction and avoidance including machine learning, give confidence in handling disruptivity for future devices. For the non-nuclear phase of ITER, two actuators are identified to lower the L-H threshold power in hydrogen plasmas. With this physics understanding and suite of capabilities, a high poloidal beta optimized-core scenario with an internal transport barrier that projects nearly to Q = 10 in ITER at similar to 8 MA was coupled to a detached divertor, and a near super H-mode optimized-pedestal scenario with co-I (p) beam injection was coupled to a radiative divertor. The hybrid core scenario was achieved directly, without the need for anomalous current diffusion, using off-axis current drive actuators. Also, a controller to assess proximity to stab
Published: 2022

8. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author: Fenstermacher, M. E., Abbate, J., Abe, S., Abrams, T., Adams, M., Adamson, B., Aiba, N., Akiyama, T., Aleynikov, P., Allen, E., Allen, S., Anand, H., Anderson, J., Andrew, Y., Andrews, T., Appelt, D., Arbon, R., Ashikawa, N., Ashourvan, A., Aslin, M., Asnis, Y., Austin, M., Ayala, D., Bak, J., Bandyopadhyay, I., Banerjee, S., Barada, K., Bardoczi, L., Barr, J., Bass, E., Battaglia, D., Battey, A., Baumgartner, W., Baylor, L., Beckers, J., Beidler, M., Belli, E., Berkery, J., Bernard, T., Bertelli, N., Beurskens, M., Bielajew, R., Bilgili, S., Biswas, B., Blondel, S., Boedo, J., Bogatu, I., Boivin, R., Bolzonella, T., Bongard, M., Bonnin, X., Bonoli, P., Bonotto, M., Bortolon, A., Bose, S., Bosviel, N., Bouwmans, S., Boyer, M., Boyes, W., Bradley, L., Brambila, R., Brennan, D., Bringuier, S., Brodsky, L., Brookman, M., Brooks, J., Brower, D., Brown, G., Brown, W., Burke, M., Burrell, K., Butler, K., Buttery, R., Bykov, I., Byrne, P., Cacheris, A., Callahan, K., Callen, J., Campbell, G., Candy, J., Canik, J., Cano-Megias, P., Cao, N., Carayannopoulos, L., Carlstrom, T., Carrig, W., Carter, T., Cary, W., Casali, L., Cengher, M., Cespedes Paz, G., Chaban, R., Chan, V., Chapman, B., Char, I., Chattopadhyay, A., Chen, R., Chen, J., Chen, X., Chen, M., Chen, Z., Choi, M., Choi, W., Choi, G., Chousal, L., Chrobak, C., Chrystal, C., Chung, Y., Churchill, R., Cianciosa, M., Clark, J., Clement, M., Coda, S., Cole, A., Collins, C., Conlin, W., Cooper, A., Cordell, J., Coriton, B., Cote, T., Cothran, J., Creely, A., Crocker, N., Crowe, C., Crowley, B., Crowley, T., Cruz-Zabala, D., Cummings, D., Curie, M., Curreli, D., Dal Molin, A., Dannels, B., Dautt-Silva, A., Davda, K., De Tommasi, G., De Vries, P., Degrandchamp, G., Degrassie, J., Demers, D., Denk, S., Depasquale, S., Deshazer, E., Diallo, A., Diem, S., Dimits, A., Ding, R., Ding, S., Ding, W., Do, T., Doane, J., Dong, G., Donovan, D., Drake, J., Drews, W., Drobny, J., Du, X., Du, H., Duarte, V., Dudt, D., Dunn, C., Duran, J., Dvorak, A., Effenberg, F., Eidietis, N., Elder, D., Eldon, D., Ellis, R., Elwasif, W., Ennis, D., Erickson, K., Ernst, D., Fasciana, M., Fedorov, D., Feibush, E., Ferraro, N., Ferreira, J., Ferron, J., Fimognari, P., Finkenthal, D., Fitzpatrick, R., Fox, P., Fox, W., Frassinetti, L., Frerichs, H., Frye, H., Fu, Y., Gage, K., Galdon Quiroga, J., Gallo, A., Gao, Q., Garcia, A., Garcia Munoz, M., Garnier, D., Garofalo, A., Gattuso, A., Geng, D., Gentle, K., Ghosh, D., Giacomelli, L., Gibson, S., Gilson, E., Giroud, C., Glass, F., Glasser, A., Glibert, D., Gohil, P., Gomez, R., Gomez, S., Gong, X., Gonzales, E., Goodman, A., Gorelov, Y., Graber, V., Granetz, R., Gray, T., Green, D., Greenfield, C., Greenwald, M., Grierson, B., Groebner, R., Grosnickle, W., Groth, M., Grunloh, H., Gu, S., Guo, W., Guo, H., Gupta, P., Guterl, J., Guttenfelder, W., Guzman, T., Haar, S., Hager, R., Hahn, S., Halfmoon, M., Hall, T., Hallatschek, K., Halpern, F., Hammett, G., Han, H., Hansen, E., Hansen, C., Hansink, M., Hanson, J., Hanson, M., Hao, G., Harris, A., Harvey, R., Haskey, S., Hassan, E., Hassanein, A., Hatch, D., Hawryluk, R., Hayashi, W., Heidbrink, W., Herfindal, J., Hicok, J., Hill, D., Hinson, E., Holcomb, C., Holland, L., Holland, C., Hollmann, E., Hollocombe, J., Holm, A., Holmes, I., Holtrop, K., Honda, M., Hong, R., Hood, R., Horton, A., Horvath, L., Hosokawa, M., Houshmandyar, S., Howard, N., Howell, E., Hoyt, D., Hu, W., Hu, Y., Hu, Q., Huang, J., Huang, Y., Hughes, J., Human, T., Humphreys, D., Huynh, P., Hyatt, A., Ibanez, C., Ibarra, L., Icasas, R., Ida, K., Igochine, V., In, Y., Inoue, S., Isayama, A., Izacard, O., Izzo, V., Jackson, A., Jacobsen, G., Jaervinen, A., Jalalvand, A., Janhunen, J., Jardin, S., Jarleblad, H., Jeon, Y., Ji, H., Jian, X., Joffrin, E., Johansen, A., Johnson, C., Johnson, T., Jones, C., Joseph, I., Jubas, D., Junge, B., Kalb, W., Kalling, R., Kamath, C., Kang, J., Kaplan, D., Kaptanoglu, A., Kasdorf, S., Kates-Harbeck, J., Kazantzidis, P., Kellman, A., Kellman, D., Kessel, C., Khumthong, K., Kim, E., Kim, H., Kim, J., Kim, S., Kim, K., Kim, C., Kimura, W., King, M., King, J., Kinsey, J., Kirk, A., Kiyan, B., Kleiner, A., Klevarova, V., Knapp, R., Knolker, M., Ko, W., Kobayashi, T., Koch, E., Kochan, M., Koel, B., Koepke, M., Kohn, A., Kolasinski, R., Kolemen, E., Kostadinova, E., Kostuk, M., Kramer, G., Kriete, D., Kripner, L., Kubota, S., Kulchar, J., Kwon, K., La Haye, R., Laggner, F., Lan, H., Lantsov, R., Lao, L., Lasa Esquisabel, A., Lasnier, C., Lau, C., Leard, B., Lee, J., Lee, R., Lee, M., Lee, Y., Lee, C., Lee, S., Lehnen, M., Leonard, A., Leppink, E., Lesher, M., Lestz, J., Leuer, J., Leuthold, N., Li, X., Li, K., Li, E., Li, G., Li, L., Li, Z., Li, J., Li, Y., Lin, Z., Lin, D., Liu, X., Liu, J., Liu, Y., Liu, T., Liu, C., Liu, Z., Liu, D., Liu, A., Loarte-Prieto, A., Lodestro, L., Logan, N., Lohr, J., Lombardo, B., Lore, J., Luan, Q., Luce, T., Luda Di Cortemiglia, T., Luhmann, N., Lunsford, R., Luo, Z., Lvovskiy, A., Lyons, B., Ma, X., Madruga, M., Madsen, B., Maggi, C., Maheshwari, K., Mail, A., Mailloux, J., Maingi, R., Major, M., Makowski, M., Manchanda, R., Marini, C., Marinoni, A., Maris, A., Markovic, T., Marrelli, L., Martin, E., Mateja, J., Matsunaga, G., Maurizio, R., Mauzey, P., Mauzey, D., McArdle, G., McClenaghan, J., McCollam, K., McDevitt, C., McKay, K., McKee, G., McLean, A., Mehta, V., Meier, E., Menard, J., Meneghini, O., Merlo, G., Messer, S., Meyer, W., Michael, C., Michoski, C., Milne, P., Minet, G., Misleh, A., Mitrishkin, Y., Moeller, C., Montes, K., Morales, M., Mordijck, S., Moreau, D., Morosohk, S., Morris, P., Morton, L., Moser, A., Moyer, R., Moynihan, C., Mrazkova, T., Mueller, D., Munaretto, S., Munoz Burgos, J., Murphy, C., Murphy, K., Muscatello, C., Myers, C., Nagy, A., Nandipati, G., Navarro, M., Nave, F., Navratil, G., Nazikian, R., Neff, A., Neilson, G., Neiser, T., Neiswanger, W., Nelson, D., Nelson, A., Nespoli, F., Nguyen, R., Nguyen, L., Nguyen, X., Nichols, J., Nocente, M., Nogami, S., Noraky, S., Norausky, N., Nornberg, M., Nygren, R., Odstrcil, T., Ogas, D., Ogorman, T., Ohdachi, S., Ohtani, Y., Okabayashi, M., Okamoto, M., Olavson, L., Olofsson, E., Omullane, M., Oneill, R., Orlov, D., Orvis, W., Osborne, T., Pace, D., Paganini Canal, G., Pajares Martinez, A., Palacios, L., Pan, C., Pan, Q., Pandit, R., Pandya, M., Pankin, A., Park, Y., Park, J., Parker, S., Parks, P., Parsons, M., Patel, B., Pawley, C., Paz-Soldan, C., Peebles, W., Pelton, S., Perillo, R., Petty, C., Peysson, Y., Pierce, D., Pigarov, A., Pigatto, L., Piglowski, D., Pinches, S., Pinsker, R., Piovesan, P., Piper, N., Pironti, A., Pitts, R., Pizzo, J., Plank, U., Podesta, M., Poli, E., Poli, F., Ponce, D., Popovic, Z., Porkolab, M., Porter, G., Powers, C., Powers, S., Prater, R., Pratt, Q., Pusztai, I., Qian, J., Qin, X., Ra, O., Rafiq, T., Raines, T., Raman, R., Rauch, J., Raymond, A., Rea, C., Reich, M., Reiman, A., Reinhold, S., Reinke, M., Reksoatmodjo, R., Ren, Q., Ren, Y., Ren, J., Rensink, M., Renteria, J., Rhodes, T., Rice, J., Roberts, R., Robinson, J., Rodriguez Fernandez, P., Rognlien, T., Rosenthal, A., Rosiello, S., Rost, J., Roveto, J., Rowan, W., Rozenblat, R., Ruane, J., Rudakov, D., Ruiz Ruiz, J., Rupani, R., Saarelma, S., Sabbagh, S., Sachdev, J., Saenz, J., Saib, S., Salewski, M., Salmi, A., Sammuli, B., Samuell, C., Sandorfi, A., Sang, C., Sarff, J., Sauter, O., Schaubel, K., Schmitz, L., Schmitz, O., Schneider, J., Schroeder, P., Schultz, K., Schuster, E., Schwartz, J., Sciortino, F., Scotti, F., Scoville, J., Seltzman, A., Seol, S., Sfiligoi, I., Shafer, M., Sharapov, S., Shen, H., Sheng, Z., Shepard, T., Shi, S., Shibata, Y., Shin, G., Shiraki, D., Shousha, R., Si, H., Simmerling, P., Sinclair, G., Sinha, J., Sinha, P., Sips, G., Sizyuk, T., Skinner, C., Sladkomedova, A., Slendebroek, T., Slief, J., Smirnov, R., Smith, J., Smith, S., Smith, D., Snipes, J., Snoep, G., Snyder, A., Snyder, P., Solano, E., Solomon, W., Song, J., Sontag, A., Soukhanovskii, V., Spendlove, J., Spong, D., Squire, J., Srinivasan, C., Stacey, W., Staebler, G., Stagner, L., Stange, T., Stangeby, P., Stefan, R., Stemprok, R., Stephan, D., Stillerman, J., Stoltzfus-Dueck, T., Stonecipher, W., Storment, S., Strait, E., Su, D., Sugiyama, L., Sun, Y., Sun, P., Sun, Z., Sun, A., Sundstrom, D., Sung, C., Sungcoco, J., Suttrop, W., Suzuki, Y., Suzuki, T., Svyatkovskiy, A., Swee, C., Sweeney, R., Sweetnam, C., Szepesi, G., Takechi, M., Tala, T., Tanaka, K., Tang, X., Tang, S., Tao, Y., Tao, R., Taussig, D., Taylor, T., Teixeira, K., Teo, K., Theodorsen, A., Thomas, D., Thome, K., Thorman, A., Thornton, A., Ti, A., Tillack, M., Timchenko, N., Tinguely, R., Tompkins, R., Tooker, J., Torrezan De Sousa, A., Trevisan, G., Tripathi, S., Trujillo Ochoa, A., Truong, D., Tsui, C., Turco, F., Turnbull, A., Umansky, M., Unterberg, E., Vaezi, P., Vail, P., Valdez, J., Valkis, W., Van Compernolle, B., Van Galen, J., Van Kampen, R., Van Zeeland, M., Verdoolaege, G., Vianello, N., Victor, B., Viezzer, E., Vincena, S., Wade, M., Waelbroeck, F., Wai, J., Wakatsuki, T., Walker, M., Wallace, G., Waltz, R., Wampler, W., Wang, L., Wang, H., Wang, Y., Wang, Z., Wang, G., Ward, S., Watkins, M., Watkins, J., Wehner, W., Wei, Y., Weiland, M., Weisberg, D., Welander, A., White, A., White, R., Wiesen, S., Wilcox, R., Wilks, T., Willensdorfer, M., Wilson, H., Wingen, A., Wolde, M., Wolff, M., Woller, K., Wolz, A., Wong, H., Woodruff, S., Wu, M., Wu, Y., Wukitch, S., Wurden, G., Xiao, W., Xie, R., Xing, Z., Xu, X., Xu, C., Xu, G., Yan, Z., Yang, X., Yang, S., Yokoyama, T., Yoneda, R., Yoshida, M., You, K., Younkin, T., Yu, J., Yu, M., Yu, G., Yuan, Q., Zaidenberg, L., Zakharov, L., Zamengo, A., Zamperini, S., Zarnstorff, M., Zeger, E., Zeller, K., Zeng, L., Zerbini, M., Zhang, L., Zhang, X., Zhang, R., Zhang, B., Zhang, J., Zhao, L., Zhao, B., Zheng, Y., Zheng, L., Zhu, B., Zhu, J., Zhu, Y., Zsutty, M., Zuin, M., Fenstermacher, M. E., Abbate, J., Abe, S., Abrams, T., Adams, M., Adamson, B., Aiba, N., Akiyama, T., Aleynikov, P., Allen, E., Allen, S., Anand, H., Anderson, J., Andrew, Y., Andrews, T., Appelt, D., Arbon, R., Ashikawa, N., Ashourvan, A., Aslin, M., Asnis, Y., Austin, M., Ayala, D., Bak, J., Bandyopadhyay, I., Banerjee, S., Barada, K., Bardoczi, L., Barr, J., Bass, E., Battaglia, D., Battey, A., Baumgartner, W., Baylor, L., Beckers, J., Beidler, M., Belli, E., Berkery, J., Bernard, T., Bertelli, N., Beurskens, M., Bielajew, R., Bilgili, S., Biswas, B., Blondel, S., Boedo, J., Bogatu, I., Boivin, R., Bolzonella, T., Bongard, M., Bonnin, X., Bonoli, P., Bonotto, M., Bortolon, A., Bose, S., Bosviel, N., Bouwmans, S., Boyer, M., Boyes, W., Bradley, L., Brambila, R., Brennan, D., Bringuier, S., Brodsky, L., Brookman, M., Brooks, J., Brower, D., Brown, G., Brown, W., Burke, M., Burrell, K., Butler, K., Buttery, R., Bykov, I., Byrne, P., Cacheris, A., Callahan, K., Callen, J., Campbell, G., Candy, J., Canik, J., Cano-Megias, P., Cao, N., Carayannopoulos, L., Carlstrom, T., Carrig, W., Carter, T., Cary, W., Casali, L., Cengher, M., Cespedes Paz, G., Chaban, R., Chan, V., Chapman, B., Char, I., Chattopadhyay, A., Chen, R., Chen, J., Chen, X., Chen, M., Chen, Z., Choi, M., Choi, W., Choi, G., Chousal, L., Chrobak, C., Chrystal, C., Chung, Y., Churchill, R., Cianciosa, M., Clark, J., Clement, M., Coda, S., Cole, A., Collins, C., Conlin, W., Cooper, A., Cordell, J., Coriton, B., Cote, T., Cothran, J., Creely, A., Crocker, N., Crowe, C., Crowley, B., Crowley, T., Cruz-Zabala, D., Cummings, D., Curie, M., Curreli, D., Dal Molin, A., Dannels, B., Dautt-Silva, A., Davda, K., De Tommasi, G., De Vries, P., Degrandchamp, G., Degrassie, J., Demers, D., Denk, S., Depasquale, S., Deshazer, E., Diallo, A., Diem, S., Dimits, A., Ding, R., Ding, S., Ding, W., Do, T., Doane, J., Dong, G., Donovan, D., Drake, J., Drews, W., Drobny, J., Du, X., Du, H., Duarte, V., Dudt, D., Dunn, C., Duran, J., Dvorak, A., Effenberg, F., Eidietis, N., Elder, D., Eldon, D., Ellis, R., Elwasif, W., Ennis, D., Erickson, K., Ernst, D., Fasciana, M., Fedorov, D., Feibush, E., Ferraro, N., Ferreira, J., Ferron, J., Fimognari, P., Finkenthal, D., Fitzpatrick, R., Fox, P., Fox, W., Frassinetti, L., Frerichs, H., Frye, H., Fu, Y., Gage, K., Galdon Quiroga, J., Gallo, A., Gao, Q., Garcia, A., Garcia Munoz, M., Garnier, D., Garofalo, A., Gattuso, A., Geng, D., Gentle, K., Ghosh, D., Giacomelli, L., Gibson, S., Gilson, E., Giroud, C., Glass, F., Glasser, A., Glibert, D., Gohil, P., Gomez, R., Gomez, S., Gong, X., Gonzales, E., Goodman, A., Gorelov, Y., Graber, V., Granetz, R., Gray, T., Green, D., Greenfield, C., Greenwald, M., Grierson, B., Groebner, R., Grosnickle, W., Groth, M., Grunloh, H., Gu, S., Guo, W., Guo, H., Gupta, P., Guterl, J., Guttenfelder, W., Guzman, T., Haar, S., Hager, R., Hahn, S., Halfmoon, M., Hall, T., Hallatschek, K., Halpern, F., Hammett, G., Han, H., Hansen, E., Hansen, C., Hansink, M., Hanson, J., Hanson, M., Hao, G., Harris, A., Harvey, R., Haskey, S., Hassan, E., Hassanein, A., Hatch, D., Hawryluk, R., Hayashi, W., Heidbrink, W., Herfindal, J., Hicok, J., Hill, D., Hinson, E., Holcomb, C., Holland, L., Holland, C., Hollmann, E., Hollocombe, J., Holm, A., Holmes, I., Holtrop, K., Honda, M., Hong, R., Hood, R., Horton, A., Horvath, L., Hosokawa, M., Houshmandyar, S., Howard, N., Howell, E., Hoyt, D., Hu, W., Hu, Y., Hu, Q., Huang, J., Huang, Y., Hughes, J., Human, T., Humphreys, D., Huynh, P., Hyatt, A., Ibanez, C., Ibarra, L., Icasas, R., Ida, K., Igochine, V., In, Y., Inoue, S., Isayama, A., Izacard, O., Izzo, V., Jackson, A., Jacobsen, G., Jaervinen, A., Jalalvand, A., Janhunen, J., Jardin, S., Jarleblad, H., Jeon, Y., Ji, H., Jian, X., Joffrin, E., Johansen, A., Johnson, C., Johnson, T., Jones, C., Joseph, I., Jubas, D., Junge, B., Kalb, W., Kalling, R., Kamath, C., Kang, J., Kaplan, D., Kaptanoglu, A., Kasdorf, S., Kates-Harbeck, J., Kazantzidis, P., Kellman, A., Kellman, D., Kessel, C., Khumthong, K., Kim, E., Kim, H., Kim, J., Kim, S., Kim, K., Kim, C., Kimura, W., King, M., King, J., Kinsey, J., Kirk, A., Kiyan, B., Kleiner, A., Klevarova, V., Knapp, R., Knolker, M., Ko, W., Kobayashi, T., Koch, E., Kochan, M., Koel, B., Koepke, M., Kohn, A., Kolasinski, R., Kolemen, E., Kostadinova, E., Kostuk, M., Kramer, G., Kriete, D., Kripner, L., Kubota, S., Kulchar, J., Kwon, K., La Haye, R., Laggner, F., Lan, H., Lantsov, R., Lao, L., Lasa Esquisabel, A., Lasnier, C., Lau, C., Leard, B., Lee, J., Lee, R., Lee, M., Lee, Y., Lee, C., Lee, S., Lehnen, M., Leonard, A., Leppink, E., Lesher, M., Lestz, J., Leuer, J., Leuthold, N., Li, X., Li, K., Li, E., Li, G., Li, L., Li, Z., Li, J., Li, Y., Lin, Z., Lin, D., Liu, X., Liu, J., Liu, Y., Liu, T., Liu, C., Liu, Z., Liu, D., Liu, A., Loarte-Prieto, A., Lodestro, L., Logan, N., Lohr, J., Lombardo, B., Lore, J., Luan, Q., Luce, T., Luda Di Cortemiglia, T., Luhmann, N., Lunsford, R., Luo, Z., Lvovskiy, A., Lyons, B., Ma, X., Madruga, M., Madsen, B., Maggi, C., Maheshwari, K., Mail, A., Mailloux, J., Maingi, R., Major, M., Makowski, M., Manchanda, R., Marini, C., Marinoni, A., Maris, A., Markovic, T., Marrelli, L., Martin, E., Mateja, J., Matsunaga, G., Maurizio, R., Mauzey, P., Mauzey, D., McArdle, G., McClenaghan, J., McCollam, K., McDevitt, C., McKay, K., McKee, G., McLean, A., Mehta, V., Meier, E., Menard, J., Meneghini, O., Merlo, G., Messer, S., Meyer, W., Michael, C., Michoski, C., Milne, P., Minet, G., Misleh, A., Mitrishkin, Y., Moeller, C., Montes, K., Morales, M., Mordijck, S., Moreau, D., Morosohk, S., Morris, P., Morton, L., Moser, A., Moyer, R., Moynihan, C., Mrazkova, T., Mueller, D., Munaretto, S., Munoz Burgos, J., Murphy, C., Murphy, K., Muscatello, C., Myers, C., Nagy, A., Nandipati, G., Navarro, M., Nave, F., Navratil, G., Nazikian, R., Neff, A., Neilson, G., Neiser, T., Neiswanger, W., Nelson, D., Nelson, A., Nespoli, F., Nguyen, R., Nguyen, L., Nguyen, X., Nichols, 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Abstract: DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices. This is done through a focus on innovations to provide solutions for high performance long pulse operation, coupled with fundamental plasma physics understanding and model validation, to drive scenario development by integrating high performance core and boundary plasmas. Substantial increases in off-axis current drive efficiency from an innovative top launch system for EC power, and in pressure broadening for Alfven eigenmode control from a co-/counter-I p steerable off-axis neutral beam, all improve the prospects for optimization of future long pulse/steady state high performance tokamak operation. Fundamental studies into the modes that drive the evolution of the pedestal pressure profile and electron vs ion heat flux validate predictive models of pedestal recovery after ELMs. Understanding the physics mechanisms of ELM control and density pumpout by 3D magnetic perturbation fields leads to confident predictions for ITER and future devices. Validated modeling of high-Z shattered pellet injection for disruption mitigation, runaway electron dissipation, and techniques for disruption prediction and avoidance including machine learning, give confidence in handling disruptivity for future devices. For the non-nuclear phase of ITER, two actuators are identified to lower the L-H threshold power in hydrogen plasmas. With this physics understanding and suite of capabilities, a high poloidal beta optimized-core scenario with an internal transport barrier that projects nearly to Q = 10 in ITER at ∼8 MA was coupled to a detached divertor, and a near super H-mode optimized-pedestal scenario with co-I p beam injection was coupled to a radiative divertor. The hybrid core scenario was achieved directly, without the need for anomalous current diffusion, using off-axis current drive actuators. Also, a controller to assess proximity to stability limit
Published: 2022

9. Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X

Author: Pedersen, Thomas Sunn, Abramovic, I., Agostinetti, P., Torres, M. Agredano, Äkäslompolo, S., Belloso, J. Alcuson, Aleynikov, P., Aleynikova, K., Alhashimi, M., Ali, A., Allen, N., Alonso, A., Anda, G., Andreeva, T., Angioni, C., Arkhipov, A., Arnold, A., Asad, W., Ascasibar, E., Aumeunier, M. H., Avramidis, K., Aymerich, E., Baek, S. G., Bähner, J., Baillod, A., Balden, M., Baldzuhn, J., Ballinger, S., Banduch, M., Bannmann, S., Navarro, A. Bañón, Barbui, T., Beidler, C., Belafdil, C., Bencze, A., Benndorf, A., Beurskens, M., Biedermann, C., Biletskyi, O., Blackwell, B., Blatzheim, M., Bluhm, T., Böckenhoff, D., Bongiovi, G., Borchardt, M., Borodin, D., Boscary, J., Bosch, H., Bosmann, T., Böswirth, B., Böttger, L., Bottino, A., Bozhenkov, S., Brakel, R., Brandt, C., Bräuer, T., Braune, H., Brezinsek, S., Brunner, K., Buller, S., Burhenn, R., Bussiahn, R., Buttenschön, B., Buzás, A., Bykov, V., Calvo, I., Mata, K. Camacho, Caminal, I., Cannas, B., Cappa, A., Carls, A., Carovani, F., Carr, M., Carralero, D., Carvalho, B., Casas, J., Castano-Bardawil, D., Castejon, F., Chaudhary, N., Chelis, I., Chomiczewska, A., Coenen, J. W., Cole, M., Cordella, F., Corre, Y., Crombe, K., Cseh, G., Csillag, B., Damm, H., Day, C., de Baar, M., De la Cal, E., Degenkolbe, S., Demby, A., Denk, S., Dhard, C., Di Siena, A., Dinklage, A., Dittmar, T., Dreval, M., Drevlak, M., Drewelow, P., Drews, P., Dunai, D., Edlund, E., Effenberg, F., Ehrke, G., Endler, M., Ennis, D. A., Escoto, F. J., Estrada, T., Fable, E., Fahrenkamp, N., Fanni, A., Faustin, J., Fellinger, J., Feng, Y., Figacz, W., Flom, E., Ford, O., Fornal, T., Frerichs, H., Freundt, S., Fuchert, G., Fukuyama, M., Füllenbach, F., Gantenbein, G., Gao, Y., Garcia, K., Regaña, J. M.García, García-Cortés, I., Gaspar, J., Gates, D. A., Geiger, J., Geiger, B., Giudicotti, L., González, A., Goriaev, A., Gradic, D., Grahl, M., Graves, J. P., Green, J., Grelier, E., Greuner, H., Groß, S., Grote, H., Groth, M., Gruca, M., Grulke, O., Grün, M., Arnaiz, J. Guerrero, Günter, S., Haak, V., Haas, M., Hacker, P., Hakola, A., Hallenbert, A., Hammond, K., Han, X., Hansen, S. K., Harris, J. H., Hartfuß, H., Hartmann, D., Hathiramani, D., Hatzky, R., Hawke, J., Hegedus, S., Hein, B., Heinemann, B., Helander, P., Henneberg, S., Hergenhahn, U., Hidalgo, C., Hindenlang, F., Hirsch, M., Höfel, U., Hollfeld, K. P., Holtz, A., Hopf, D., Höschen, D., Houry, M., Howard, J., Huang, X., Hubeny, M., Hudson, S., Ida, K., Igitkhanov, Y., Igochine, V., Illy, S., Ionita-Schrittwieser, C., Isobe, M., Jabłczynska, M., Jablonski, S., Jagielski, B., Jakubowski, M., van Vuuren, A. Jansen, Jelonnek, J., Jenko, F., Jensen, T., Jenzsch, H., Junghanns, P., Kaczmarczyk, J., Kallmeyer, J., Kamionka, U., Kandler, M., Kasilov, S., Kazakov, Y., Kennedy, D., Kharwandikar, A., Khokhlov, M., Kiefer, C., Killer, C., Kirschner, A., Kleiber, R., Klinger, T., Klose, S., Knauer, J., Knieps, A., Köchl, F., Kocsis, G., Kolesnichenko, Ya I., Könies, A., König, R., Kontula, J., Kornejew, P., Koschinsky, J., Kozulia, M. M., Krämer-Flecken, A., Krampitz, R., Krause, M., Krawczyk, N., Kremeyer, T., Krier, L., Kriete, D. M., Krychowiak, M., Ksiazek, I., Kubkowska, M., Kuczynski, M., Kühner, G., Kumar, A., Kurki-Suonio, T., Kwak, S., Landreman, M., Lang, P. T., Langenberg, A., Laqua, H., Laube, R., Lazerson, S., Lewerentz, M., Li, C., Liang, Y., Linsmeier, Ch, Lion, J., Litnovsky, A., Liu, S., Lobsien, J., Loizu, J., Lore, J., Lorenz, A., Losada, U., Louche, F., Lunsford, R., Lutsenko, V., Machielsen, M., Mackel, F., Maisano-Brown, J., Maj, O., Makowski, D., Manduchi, G., Maragkoudakis, E., Marchuk, O., Marsen, S., Martines, E., Martinez-Fernandez, J., Marushchenko, M., Masuzaki, S., Maurer, D., Mayer, M., McCarthy, K. J., McCormack, O., McNeely, P., Meister, H., Mendelevitch, B., Mendes, S., Merlo, A., Messian, A., Mielczarek, A., Mishchenko, O., Missal, B., Mitteau, R., Moiseenko, V. E., Mollen, A., Moncada, V., Mönnich, T., Morisaki, T., Moseev, D., Motojima, G., Mulas, S., Mulsow, M., Nagel, M., Naujoks, D., Naulin, V., Neelis, T., Neilson, H., Neu, R., Neubauer, O., Neuner, U., Nicolai, D., Nielsen, S. K., Niemann, H., Nishiza, T., Nishizawa, T., Nührenberg, C., Ochoukov, R., Oelmann, J., Offermanns, G., Ogawa, K., Okamura, S., Ölmanns, J., Ongena, J., Oosterbeek, J., Otte, M., Pablant, N., Alvarez, N. Panadero, Pandey, A., Pasch, E., Pavlichenko, R., Pavone, A., Pawelec, E., Pechstein, G., Pelka, G., Perseo, V., Peterson, B., Pilopp, D., Pingel, S., Pisano, F., Plöckl, B., Plunk, G., Pölöskei, P., Pompe, B., Popov, A., Porkolab, M., Proll, J., Pueschel, M. J., Puiatti, M. E., Sitjes, A. Puig, Purps, F., Rahbarnia, K., Rasinski, M., Rasmussen, J., Reiman, A., Reimold, F., Reisner, M., Reiter, D., Richou, M., Riedl, R., Riemann, J., Riße, K., Roberg-Clark, G., Rohde, V., Romazanov, J., Rondeshagen, D., Rong, P., Rudischhauser, L., Rummel, T., Rummel, K., Runov, A., Rust, N., Ryc, L., Salembier, P., Salewski, M., Sanchez, E., Satake, S., Satheeswaran, G., Schacht, J., Scharff, E., Schauer, F., Schilling, J., Schlisio, G., Schmid, K., Schmitt, J., Schmitz, O., Schneider, W., Schneider, M., Schneider, P., Schrittwieser, R., Schröder, T., Schröder, M., Schroeder, R., Schweer, B., Schwörer, D., Scott, E., Shanahan, B., Sias, G., Sichta, P., Singer, M., Sinha, P., Sipliä, S., Slaby, C., Sleczka, M., Smith, H., Smoniewski, J., Sonnendrücker, E., Spolaore, M., Spring, A., Stadler, R., Stanczak, D., Stange, T., Stepanov, I., Stephey, L., Stober, J., Stroth, U., Strumberger, E., Suzuki, C., Suzuki, Y., Svensson, J., Szabolics, T., Szepesi, T., Szücs, M., Tabarés, F. L., Tamura, N., Tancetti, A., Tantos, C., Terry, J., Thienpondt, H., Thomsen, H., Thumm, M., Travere, J. M., Traverso, P., Tretter, J., Trier, E., Mora, H. Trimino, Tsujimura, T., Turkin, Y., Tykhyi, A., Unterberg, B., van Eeten, P., van Milligen, B. Ph, van Schoor, M., Vano, L., Varoutis, S., Vecsei, M., Vela, L., Velasco, J. L., Vervier, M., Vianello, N., Viebke, H., Vilbrandt, R., Vogel, G., Vogt, N., Volkhausen, C., von Stechow, A., Wagner, F., Wang, E., Wang, H., Warmer, F., Wauters, T., Wegener, L., Wegner, T., Weir, G., Wenzel, U., White, A., Wilde, F., Wilms, F., Windisch, T., Winkler, M., Winter, A., Winters, V., Wolf, R., Wright, A. M., Wurden, G. A., Xanthopoulos, P., Xu, S., Yamada, H., Yamaguchi, H., Yokoyama, M., Yoshinuma, M., Yu, Q., Zamanov, M., Zanini, M., Zarnstorff, M., Zhang, D., Zhou, S., Zhu, J., Zhu, C., Zilker, M., Zocco, A., Zohm, H., Zoletnik, S., Zsuga, L., Pedersen, Thomas Sunn, Abramovic, I., Agostinetti, P., Torres, M. Agredano, Äkäslompolo, S., Belloso, J. Alcuson, Aleynikov, P., Aleynikova, K., Alhashimi, M., Ali, A., Allen, N., Alonso, A., Anda, G., Andreeva, T., Angioni, C., Arkhipov, A., Arnold, A., Asad, W., Ascasibar, E., Aumeunier, M. H., Avramidis, K., Aymerich, E., Baek, S. G., Bähner, J., Baillod, A., Balden, M., Baldzuhn, J., Ballinger, S., Banduch, M., Bannmann, S., Navarro, A. Bañón, Barbui, T., Beidler, C., Belafdil, C., Bencze, A., Benndorf, A., Beurskens, M., Biedermann, C., Biletskyi, O., Blackwell, B., Blatzheim, M., Bluhm, T., Böckenhoff, D., Bongiovi, G., Borchardt, M., Borodin, D., Boscary, J., Bosch, H., Bosmann, T., Böswirth, B., Böttger, L., Bottino, A., Bozhenkov, S., Brakel, R., Brandt, C., Bräuer, T., Braune, H., Brezinsek, S., Brunner, K., Buller, S., Burhenn, R., Bussiahn, R., Buttenschön, B., Buzás, A., Bykov, V., Calvo, I., Mata, K. Camacho, Caminal, I., Cannas, B., Cappa, A., Carls, A., Carovani, F., Carr, M., Carralero, D., Carvalho, B., Casas, J., Castano-Bardawil, D., Castejon, F., Chaudhary, N., Chelis, I., Chomiczewska, A., Coenen, J. W., Cole, M., Cordella, F., Corre, Y., Crombe, K., Cseh, G., Csillag, B., Damm, H., Day, C., de Baar, M., De la Cal, E., Degenkolbe, S., Demby, A., Denk, S., Dhard, C., Di Siena, A., Dinklage, A., Dittmar, T., Dreval, M., Drevlak, M., Drewelow, P., Drews, P., Dunai, D., Edlund, E., Effenberg, F., Ehrke, G., Endler, M., Ennis, D. A., Escoto, F. J., Estrada, T., Fable, E., Fahrenkamp, N., Fanni, A., Faustin, J., Fellinger, J., Feng, Y., Figacz, W., Flom, E., Ford, O., Fornal, T., Frerichs, H., Freundt, S., Fuchert, G., Fukuyama, M., Füllenbach, F., Gantenbein, G., Gao, Y., Garcia, K., Regaña, J. M.García, García-Cortés, I., Gaspar, J., Gates, D. A., Geiger, J., Geiger, B., Giudicotti, L., González, A., Goriaev, A., Gradic, D., Grahl, M., Graves, J. P., Green, J., Grelier, E., Greuner, H., Groß, S., Grote, H., Groth, M., Gruca, M., Grulke, O., Grün, M., Arnaiz, J. Guerrero, Günter, S., Haak, V., Haas, M., Hacker, P., Hakola, A., Hallenbert, A., Hammond, K., Han, X., Hansen, S. K., Harris, J. H., Hartfuß, H., Hartmann, D., Hathiramani, D., Hatzky, R., Hawke, J., Hegedus, S., Hein, B., Heinemann, B., Helander, P., Henneberg, S., Hergenhahn, U., Hidalgo, C., Hindenlang, F., Hirsch, M., Höfel, U., Hollfeld, K. P., Holtz, A., Hopf, D., Höschen, D., Houry, M., Howard, J., Huang, X., Hubeny, M., Hudson, S., Ida, K., Igitkhanov, Y., Igochine, V., Illy, S., Ionita-Schrittwieser, C., Isobe, M., Jabłczynska, M., Jablonski, S., Jagielski, B., Jakubowski, M., van Vuuren, A. Jansen, Jelonnek, J., Jenko, F., Jensen, T., Jenzsch, H., Junghanns, P., Kaczmarczyk, J., Kallmeyer, J., Kamionka, U., Kandler, M., Kasilov, S., Kazakov, Y., Kennedy, D., Kharwandikar, A., Khokhlov, M., Kiefer, C., Killer, C., Kirschner, A., Kleiber, R., Klinger, T., Klose, S., Knauer, J., Knieps, A., Köchl, F., Kocsis, G., Kolesnichenko, Ya I., Könies, A., König, R., Kontula, J., Kornejew, P., Koschinsky, J., Kozulia, M. M., Krämer-Flecken, A., Krampitz, R., Krause, M., Krawczyk, N., Kremeyer, T., Krier, L., Kriete, D. M., Krychowiak, M., Ksiazek, I., Kubkowska, M., Kuczynski, M., Kühner, G., Kumar, A., Kurki-Suonio, T., Kwak, S., Landreman, M., Lang, P. T., Langenberg, A., Laqua, H., Laube, R., Lazerson, S., Lewerentz, M., Li, C., Liang, Y., Linsmeier, Ch, Lion, J., Litnovsky, A., Liu, S., Lobsien, J., Loizu, J., Lore, J., Lorenz, A., Losada, U., Louche, F., Lunsford, R., Lutsenko, V., Machielsen, M., Mackel, F., Maisano-Brown, J., Maj, O., Makowski, D., Manduchi, G., Maragkoudakis, E., Marchuk, O., Marsen, S., Martines, E., Martinez-Fernandez, J., Marushchenko, M., Masuzaki, S., Maurer, D., Mayer, M., McCarthy, K. J., McCormack, O., McNeely, P., Meister, H., Mendelevitch, B., Mendes, S., Merlo, A., Messian, A., Mielczarek, A., Mishchenko, O., Missal, B., Mitteau, R., Moiseenko, V. E., Mollen, A., Moncada, V., Mönnich, T., Morisaki, T., Moseev, D., Motojima, G., Mulas, S., Mulsow, M., Nagel, M., Naujoks, D., Naulin, V., Neelis, T., Neilson, H., Neu, R., Neubauer, O., Neuner, U., Nicolai, D., Nielsen, S. K., Niemann, H., Nishiza, T., Nishizawa, T., Nührenberg, C., Ochoukov, R., Oelmann, J., Offermanns, G., Ogawa, K., Okamura, S., Ölmanns, J., Ongena, J., Oosterbeek, J., Otte, M., Pablant, N., Alvarez, N. Panadero, Pandey, A., Pasch, E., Pavlichenko, R., Pavone, A., Pawelec, E., Pechstein, G., Pelka, G., Perseo, V., Peterson, B., Pilopp, D., Pingel, S., Pisano, F., Plöckl, B., Plunk, G., Pölöskei, P., Pompe, B., Popov, A., Porkolab, M., Proll, J., Pueschel, M. J., Puiatti, M. E., Sitjes, A. Puig, Purps, F., Rahbarnia, K., Rasinski, M., Rasmussen, J., Reiman, A., Reimold, F., Reisner, M., Reiter, D., Richou, M., Riedl, R., Riemann, J., Riße, K., Roberg-Clark, G., Rohde, V., Romazanov, J., Rondeshagen, D., Rong, P., Rudischhauser, L., Rummel, T., Rummel, K., Runov, A., Rust, N., Ryc, L., Salembier, P., Salewski, M., Sanchez, E., Satake, S., Satheeswaran, G., Schacht, J., Scharff, E., Schauer, F., Schilling, J., Schlisio, G., Schmid, K., Schmitt, J., Schmitz, O., Schneider, W., Schneider, M., Schneider, P., Schrittwieser, R., Schröder, T., Schröder, M., Schroeder, R., Schweer, B., Schwörer, D., Scott, E., Shanahan, B., Sias, G., Sichta, P., Singer, M., Sinha, P., Sipliä, S., Slaby, C., Sleczka, M., Smith, H., Smoniewski, J., Sonnendrücker, E., Spolaore, M., Spring, A., Stadler, R., Stanczak, D., Stange, T., Stepanov, I., Stephey, L., Stober, J., Stroth, U., Strumberger, E., Suzuki, C., Suzuki, Y., Svensson, J., Szabolics, T., Szepesi, T., Szücs, M., Tabarés, F. L., Tamura, N., Tancetti, A., Tantos, C., Terry, J., Thienpondt, H., Thomsen, H., Thumm, M., Travere, J. M., Traverso, P., Tretter, J., Trier, E., Mora, H. Trimino, Tsujimura, T., Turkin, Y., Tykhyi, A., Unterberg, B., van Eeten, P., van Milligen, B. Ph, van Schoor, M., Vano, L., Varoutis, S., Vecsei, M., Vela, L., Velasco, J. L., Vervier, M., Vianello, N., Viebke, H., Vilbrandt, R., Vogel, G., Vogt, N., Volkhausen, C., von Stechow, A., Wagner, F., Wang, E., Wang, H., Warmer, F., Wauters, T., Wegener, L., Wegner, T., Weir, G., Wenzel, U., White, A., Wilde, F., Wilms, F., Windisch, T., Winkler, M., Winter, A., Winters, V., Wolf, R., Wright, A. M., Wurden, G. A., Xanthopoulos, P., Xu, S., Yamada, H., Yamaguchi, H., Yokoyama, M., Yoshinuma, M., Yu, Q., Zamanov, M., Zanini, M., Zarnstorff, M., Zhang, D., Zhou, S., Zhu, J., Zhu, C., Zilker, M., Zocco, A., Zohm, H., Zoletnik, S., and Zsuga, L.
Abstract: We present recent highlights from the most recent operation phases of Wendelstein 7-X, the most advanced stellarator in the world. Stable detachment with good particle exhaust, low impurity content, and energy confinement times exceeding 100 ms, have been maintained for tens of seconds. Pellet fueling allows for plasma phases with reduced ion-temperature-gradient turbulence, and during such phases, the overall confinement is so good (energy confinement times often exceeding 200 ms) that the attained density and temperature profiles would not have been possible in less optimized devices, since they would have had neoclassical transport losses exceeding the heating applied in W7-X. This provides proof that the reduction of neoclassical transport through magnetic field optimization is successful. W7-X plasmas generally show good impurity screening and high plasma purity, but there is evidence of longer impurity confinement times during turbulence-suppressed phases.
Published: 2022

10. Radial coordinate maps, radial vectors, and binormal vectors for 5/6, 5/5 and 5/4 edge island domains in W7-X

Author: Schmitt, J C, primary, Kriete, D M, additional, Andreeva, T, additional, Geiger, J, additional, Grahl, M, additional, Schilling, J, additional, Thomsen, H, additional, and Flom, E, additional
Published: 2022
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11. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author: Fenstermacher, M. E., primary, Abbate, J., additional, Abe, S., additional, Abrams, T., additional, Adams, M., additional, Adamson, B., additional, Aiba, N., additional, Akiyama, T., additional, Aleynikov, P., additional, Allen, E., additional, Allen, S., additional, Anand, H., additional, Anderson, J., additional, Andrew, Y., additional, Andrews, T., additional, Appelt, D., additional, Arbon, R., additional, Ashikawa, N., additional, Ashourvan, A., additional, Aslin, M., additional, Asnis, Y., additional, Austin, M., additional, Ayala, D., additional, Bak, J., additional, Bandyopadhyay, I., additional, Banerjee, S., additional, Barada, K., additional, Bardoczi, L., additional, Barr, J., additional, Bass, E., additional, Battaglia, D., additional, Battey, A., additional, Baumgartner, W., additional, Baylor, L., additional, Beckers, J., additional, Beidler, M., additional, Belli, E., additional, Berkery, J., additional, Bernard, T., additional, Bertelli, N., additional, Beurskens, M., additional, Bielajew, R., additional, Bilgili, S., additional, Biswas, B., additional, Blondel, S., additional, Boedo, J., additional, Bogatu, I., additional, Boivin, R., additional, Bolzonella, T., additional, Bongard, M., additional, Bonnin, X., additional, Bonoli, P., additional, Bonotto, M., additional, Bortolon, A., additional, Bose, S., additional, Bosviel, N., additional, Bouwmans, S., additional, Boyer, M., additional, Boyes, W., additional, Bradley, L., additional, Brambila, R., additional, Brennan, D., additional, Bringuier, S., additional, Brodsky, L., additional, Brookman, M., additional, Brooks, J., additional, Brower, D., additional, Brown, G., additional, Brown, W., additional, Burke, M., additional, Burrell, K., additional, Butler, K., additional, Buttery, R., additional, Bykov, I., additional, Byrne, P., additional, Cacheris, A., additional, Callahan, K., additional, Callen, J., additional, Campbell, G., additional, Candy, J., additional, Canik, J., additional, Cano-Megias, P., additional, Cao, N., additional, Carayannopoulos, L., additional, Carlstrom, T., additional, Carrig, W., additional, Carter, T., additional, Cary, W., additional, Casali, L., additional, Cengher, M., additional, Cespedes Paz, G., additional, Chaban, R., additional, Chan, V., additional, Chapman, B., additional, Char, I., additional, Chattopadhyay, A., additional, Chen, R., additional, Chen, J., additional, Chen, X., additional, Chen, M., additional, Chen, Z., additional, Choi, M., additional, Choi, W., additional, Choi, G., additional, Chousal, L., additional, Chrobak, C., additional, Chrystal, C., additional, Chung, Y., additional, Churchill, R., additional, Cianciosa, M., additional, Clark, J., additional, Clement, M., additional, Coda, S., additional, Cole, A., additional, Collins, C., additional, Conlin, W., additional, Cooper, A., additional, Cordell, J., additional, Coriton, B., additional, Cote, T., additional, Cothran, J., additional, Creely, A., additional, Crocker, N., additional, Crowe, C., additional, Crowley, B., additional, Crowley, T., additional, Cruz-Zabala, D., additional, Cummings, D., additional, Curie, M., additional, Curreli, D., additional, Dal Molin, A., additional, Dannels, B., additional, Dautt-Silva, A., additional, Davda, K., additional, De Tommasi, G., additional, De Vries, P., additional, Degrandchamp, G., additional, Degrassie, J., additional, Demers, D., additional, Denk, S., additional, Depasquale, S., additional, Deshazer, E., additional, Diallo, A., additional, Diem, S., additional, Dimits, A., additional, Ding, R., additional, Ding, S., additional, Ding, W., additional, Do, T., additional, Doane, J., additional, Dong, G., additional, Donovan, D., additional, Drake, J., additional, Drews, W., additional, Drobny, J., additional, Du, X., additional, Du, H., additional, Duarte, V., additional, Dudt, D., additional, Dunn, C., additional, Duran, J., additional, Dvorak, A., additional, Effenberg, F., additional, Eidietis, N., additional, Elder, D., additional, Eldon, D., additional, Ellis, R., additional, Elwasif, W., additional, Ennis, D., additional, Erickson, K., additional, Ernst, D., additional, Fasciana, M., additional, Fedorov, D., additional, Feibush, E., additional, Ferraro, N., additional, Ferreira, J., additional, Ferron, J., additional, Fimognari, P., additional, Finkenthal, D., additional, Fitzpatrick, R., additional, Fox, P., additional, Fox, W., additional, Frassinetti, L., additional, Frerichs, H., additional, Frye, H., additional, Fu, Y., additional, Gage, K., additional, Galdon Quiroga, J., additional, Gallo, A., additional, Gao, Q., additional, Garcia, A., additional, Garcia Munoz, M., additional, Garnier, D., additional, Garofalo, A., additional, Gattuso, A., additional, Geng, D., additional, Gentle, K., additional, Ghosh, D., additional, Giacomelli, L., additional, Gibson, S., additional, Gilson, E., additional, Giroud, C., additional, Glass, F., additional, Glasser, A., additional, Glibert, D., additional, Gohil, P., additional, Gomez, R., additional, Gomez, S., additional, Gong, X., additional, Gonzales, E., additional, Goodman, A., additional, Gorelov, Y., additional, Graber, V., additional, Granetz, R., additional, Gray, T., additional, Green, D., additional, Greenfield, C., additional, Greenwald, M., additional, Grierson, B., additional, Groebner, R., additional, Grosnickle, W., additional, Groth, M., additional, Grunloh, H., additional, Gu, S., additional, Guo, W., additional, Guo, H., additional, Gupta, P., additional, Guterl, J., additional, Guttenfelder, W., additional, Guzman, T., additional, Haar, S., additional, Hager, R., additional, Hahn, S., additional, Halfmoon, M., additional, Hall, T., additional, Hallatschek, K., additional, Halpern, F., additional, Hammett, G., additional, Han, H., additional, Hansen, E., additional, Hansen, C., additional, Hansink, M., additional, Hanson, J., additional, Hanson, M., additional, Hao, G., additional, Harris, A., additional, Harvey, R., additional, Haskey, S., additional, Hassan, E., additional, Hassanein, A., additional, Hatch, D., additional, Hawryluk, R., additional, Hayashi, W., additional, Heidbrink, W., additional, Herfindal, J., additional, Hicok, J., additional, Hill, D., additional, Hinson, E., additional, Holcomb, C., additional, Holland, L., additional, Holland, C., additional, Hollmann, E., additional, Hollocombe, J., additional, Holm, A., additional, Holmes, I., additional, Holtrop, K., additional, Honda, M., additional, Hong, R., additional, Hood, R., additional, Horton, A., additional, Horvath, L., additional, Hosokawa, M., additional, Houshmandyar, S., additional, Howard, N., additional, Howell, E., additional, Hoyt, D., additional, Hu, W., additional, Hu, Y., additional, Hu, Q., additional, Huang, J., additional, Huang, Y., additional, Hughes, J., additional, Human, T., additional, Humphreys, D., additional, Huynh, P., additional, Hyatt, A., additional, Ibanez, C., additional, Ibarra, L., additional, Icasas, R., additional, Ida, K., additional, Igochine, V., additional, In, Y., additional, Inoue, S., additional, Isayama, A., additional, Izacard, O., additional, Izzo, V., additional, Jackson, A., additional, Jacobsen, G., additional, Jaervinen, A., additional, Jalalvand, A., additional, Janhunen, J., additional, Jardin, S., additional, Jarleblad, H., additional, Jeon, Y., additional, Ji, H., additional, Jian, X., additional, Joffrin, E., additional, Johansen, A., additional, Johnson, C., additional, Johnson, T., additional, Jones, C., additional, Joseph, I., additional, Jubas, D., additional, Junge, B., additional, Kalb, W., additional, Kalling, R., additional, Kamath, C., additional, Kang, J., additional, Kaplan, D., additional, Kaptanoglu, A., additional, Kasdorf, S., additional, Kates-Harbeck, J., additional, Kazantzidis, P., additional, Kellman, A., additional, Kellman, D., additional, Kessel, C., additional, Khumthong, K., additional, Kim, E., additional, Kim, H., additional, Kim, J., additional, Kim, S., additional, Kim, K., additional, Kim, C., additional, Kimura, W., additional, King, M., additional, King, J., additional, Kinsey, J., additional, Kirk, A., additional, Kiyan, B., additional, Kleiner, A., additional, Klevarova, V., additional, Knapp, R., additional, Knolker, M., additional, Ko, W., additional, Kobayashi, T., additional, Koch, E., additional, Kochan, M., additional, Koel, B., additional, Koepke, M., additional, Kohn, A., additional, Kolasinski, R., additional, Kolemen, E., additional, Kostadinova, E., additional, Kostuk, M., additional, Kramer, G., additional, Kriete, D., additional, Kripner, L., additional, Kubota, S., additional, Kulchar, J., additional, Kwon, K., additional, La Haye, R., additional, Laggner, F., additional, Lan, H., additional, Lantsov, R., additional, Lao, L., additional, Lasa Esquisabel, A., additional, Lasnier, C., additional, Lau, C., additional, Leard, B., additional, Lee, J., additional, Lee, R., additional, Lee, M., additional, Lee, Y., additional, Lee, C., additional, Lee, S., additional, Lehnen, M., additional, Leonard, A., additional, Leppink, E., additional, Lesher, M., additional, Lestz, J., additional, Leuer, J., additional, Leuthold, N., additional, Li, X., additional, Li, K., additional, Li, E., additional, Li, G., additional, Li, L., additional, Li, Z., additional, Li, J., additional, Li, Y., additional, Lin, Z., additional, Lin, D., additional, Liu, X., additional, Liu, J., additional, Liu, Y., additional, Liu, T., additional, Liu, C., additional, Liu, Z., additional, Liu, D., additional, Liu, A., additional, Loarte-Prieto, A., additional, Lodestro, L., additional, Logan, N., additional, Lohr, J., additional, Lombardo, B., additional, Lore, J., additional, Luan, Q., additional, Luce, T., additional, Luda Di Cortemiglia, T., additional, Luhmann, N., additional, Lunsford, R., additional, Luo, Z., additional, Lvovskiy, A., additional, Lyons, B., additional, Ma, X., additional, Madruga, M., additional, Madsen, B., additional, Maggi, C., additional, Maheshwari, K., additional, Mail, A., additional, Mailloux, J., additional, Maingi, R., additional, Major, M., additional, Makowski, M., additional, Manchanda, R., additional, Marini, C., additional, Marinoni, A., additional, Maris, A., additional, Markovic, T., additional, Marrelli, L., additional, Martin, E., additional, Mateja, J., additional, Matsunaga, G., additional, Maurizio, R., additional, Mauzey, P., additional, Mauzey, D., additional, Mcardle, G., additional, Mcclenaghan, J., additional, Mccollam, K., additional, Mcdevitt, C., additional, Mckay, K., additional, Mckee, G., additional, Mclean, A., additional, Mehta, V., additional, Meier, E., additional, Menard, J., additional, Meneghini, O., additional, Merlo, G., additional, Messer, S., additional, Meyer, W., additional, Michael, C., additional, Michoski, C., additional, Milne, P., additional, Minet, G., additional, Misleh, A., additional, Mitrishkin, Y., additional, Moeller, C., additional, Montes, K., additional, Morales, M., additional, Mordijck, S., additional, Moreau, D., additional, Morosohk, S., additional, Morris, P., additional, Morton, L., additional, Moser, A., additional, Moyer, R., additional, Moynihan, C., additional, Mrazkova, T., additional, Mueller, D., additional, Munaretto, S., additional, Munoz Burgos, J., additional, Murphy, C., additional, Murphy, K., additional, Muscatello, C., additional, Myers, C., additional, Nagy, A., additional, Nandipati, G., additional, Navarro, M., additional, Nave, F., additional, Navratil, G., additional, Nazikian, R., additional, Neff, A., additional, Neilson, G., additional, Neiser, T., additional, Neiswanger, W., additional, Nelson, D., additional, Nelson, A., additional, Nespoli, F., additional, Nguyen, R., additional, Nguyen, L., additional, Nguyen, X., additional, Nichols, J., additional, Nocente, M., additional, Nogami, S., additional, Noraky, S., additional, Norausky, N., additional, Nornberg, M., additional, Nygren, R., additional, Odstrcil, T., additional, Ogas, D., additional, Ogorman, T., additional, Ohdachi, S., additional, Ohtani, Y., additional, Okabayashi, M., additional, Okamoto, M., additional, Olavson, L., additional, Olofsson, E., additional, Omullane, M., additional, Oneill, R., additional, Orlov, D., additional, Orvis, W., additional, Osborne, T., additional, Pace, D., additional, Paganini Canal, G., additional, Pajares Martinez, A., additional, Palacios, L., additional, Pan, C., additional, Pan, Q., additional, Pandit, R., additional, Pandya, M., additional, Pankin, A., additional, Park, Y., additional, Park, J., additional, Parker, S., additional, Parks, P., additional, Parsons, M., additional, Patel, B., additional, Pawley, C., additional, Paz-Soldan, C., additional, Peebles, W., additional, Pelton, S., additional, Perillo, R., additional, Petty, C., additional, Peysson, Y., additional, Pierce, D., additional, Pigarov, A., additional, Pigatto, L., additional, Piglowski, D., additional, Pinches, S., additional, Pinsker, R., additional, Piovesan, P., additional, Piper, N., additional, Pironti, A., additional, Pitts, R., additional, Pizzo, J., additional, Plank, U., additional, Podesta, M., additional, Poli, E., additional, Poli, F., additional, Ponce, D., additional, Popovic, Z., additional, Porkolab, M., additional, Porter, G., additional, Powers, C., additional, Powers, S., additional, Prater, R., additional, Pratt, Q., additional, Pusztai, I., additional, Qian, J., additional, Qin, X., additional, Ra, O., additional, Rafiq, T., additional, Raines, T., additional, Raman, R., additional, Rauch, J., additional, Raymond, A., additional, Rea, C., additional, Reich, M., additional, Reiman, A., additional, Reinhold, S., additional, Reinke, M., additional, Reksoatmodjo, R., additional, Ren, Q., additional, Ren, Y., additional, Ren, J., additional, Rensink, M., additional, Renteria, J., additional, Rhodes, T., additional, Rice, J., additional, Roberts, R., additional, Robinson, J., additional, Rodriguez Fernandez, P., additional, Rognlien, T., additional, Rosenthal, A., additional, Rosiello, S., additional, Rost, J., additional, Roveto, J., additional, Rowan, W., additional, Rozenblat, R., additional, Ruane, J., additional, Rudakov, D., additional, Ruiz Ruiz, J., additional, Rupani, R., additional, Saarelma, S., additional, Sabbagh, S., additional, Sachdev, J., additional, Saenz, J., additional, Saib, S., additional, Salewski, M., additional, Salmi, A., additional, Sammuli, B., additional, Samuell, C., additional, Sandorfi, A., additional, Sang, C., additional, Sarff, J., additional, Sauter, O., additional, Schaubel, K., additional, Schmitz, L., additional, Schmitz, O., additional, Schneider, J., additional, Schroeder, P., additional, Schultz, K., additional, Schuster, E., additional, Schwartz, J., additional, Sciortino, F., additional, Scotti, F., additional, Scoville, J., additional, Seltzman, A., additional, Seol, S., additional, Sfiligoi, I., additional, Shafer, M., additional, Sharapov, S., additional, Shen, H., additional, Sheng, Z., additional, Shepard, T., additional, Shi, S., additional, Shibata, Y., additional, Shin, G., additional, Shiraki, D., additional, Shousha, R., additional, Si, H., additional, Simmerling, P., additional, Sinclair, G., additional, Sinha, J., additional, Sinha, P., additional, Sips, G., additional, Sizyuk, T., additional, Skinner, C., additional, Sladkomedova, A., additional, Slendebroek, T., additional, Slief, J., additional, Smirnov, R., additional, Smith, J., additional, Smith, S., additional, Smith, D., additional, Snipes, J., additional, Snoep, G., additional, Snyder, A., additional, Snyder, P., additional, Solano, E., additional, Solomon, W., additional, Song, J., additional, Sontag, A., additional, Soukhanovskii, V., additional, Spendlove, J., additional, Spong, D., additional, Squire, J., additional, Srinivasan, C., additional, Stacey, W., additional, Staebler, G., additional, Stagner, L., additional, Stange, T., additional, Stangeby, P., additional, Stefan, R., additional, Stemprok, R., additional, Stephan, D., additional, Stillerman, J., additional, Stoltzfus-Dueck, T., additional, Stonecipher, W., additional, Storment, S., additional, Strait, E., additional, Su, D., additional, Sugiyama, L., additional, Sun, Y., additional, Sun, P., additional, Sun, Z., additional, Sun, A., additional, Sundstrom, D., additional, Sung, C., additional, Sungcoco, J., additional, Suttrop, W., additional, Suzuki, Y., additional, Suzuki, T., additional, Svyatkovskiy, A., additional, Swee, C., additional, Sweeney, R., additional, Sweetnam, C., additional, Szepesi, G., additional, Takechi, M., additional, Tala, T., additional, Tanaka, K., additional, Tang, X., additional, Tang, S., additional, Tao, Y., additional, Tao, R., additional, Taussig, D., additional, Taylor, T., additional, Teixeira, K., additional, Teo, K., additional, Theodorsen, A., additional, Thomas, D., additional, Thome, K., additional, Thorman, A., additional, Thornton, A., additional, Ti, A., additional, Tillack, M., additional, Timchenko, N., additional, Tinguely, R., additional, Tompkins, R., additional, Tooker, J., additional, Torrezan De Sousa, A., additional, Trevisan, G., additional, Tripathi, S., additional, Trujillo Ochoa, A., additional, Truong, D., additional, Tsui, C., additional, Turco, F., additional, Turnbull, A., additional, Umansky, M., additional, Unterberg, E., additional, Vaezi, P., additional, Vail, P., additional, Valdez, J., additional, Valkis, W., additional, Van Compernolle, B., additional, Van Galen, J., additional, Van Kampen, R., additional, Van Zeeland, M., additional, Verdoolaege, G., additional, Vianello, N., additional, Victor, B., additional, Viezzer, E., additional, Vincena, S., additional, Wade, M., additional, Waelbroeck, F., additional, Wai, J., additional, Wakatsuki, T., additional, Walker, M., additional, Wallace, G., additional, Waltz, R., additional, Wampler, W., additional, Wang, L., additional, Wang, H., additional, Wang, Y., additional, Wang, Z., additional, Wang, G., additional, Ward, S., additional, Watkins, M., additional, Watkins, J., additional, Wehner, W., additional, Wei, Y., additional, Weiland, M., additional, Weisberg, D., additional, Welander, A., additional, White, A., additional, White, R., additional, Wiesen, S., additional, Wilcox, R., additional, Wilks, T., additional, Willensdorfer, M., additional, Wilson, H., additional, Wingen, A., additional, Wolde, M., additional, Wolff, M., additional, Woller, K., additional, Wolz, A., additional, Wong, H., additional, Woodruff, S., additional, Wu, M., additional, Wu, Y., additional, Wukitch, S., additional, Wurden, G., additional, Xiao, W., additional, Xie, R., additional, Xing, Z., additional, Xu, X., additional, Xu, C., additional, Xu, G., additional, Yan, Z., additional, Yang, X., additional, Yang, S., additional, Yokoyama, T., additional, Yoneda, R., additional, Yoshida, M., additional, You, K., additional, Younkin, T., additional, Yu, J., additional, Yu, M., additional, Yu, G., additional, Yuan, Q., additional, Zaidenberg, L., additional, Zakharov, L., additional, Zamengo, A., additional, Zamperini, S., additional, Zarnstorff, M., additional, Zeger, E., additional, Zeller, K., additional, Zeng, L., additional, Zerbini, M., additional, Zhang, L., additional, Zhang, X., additional, Zhang, R., additional, Zhang, B., additional, Zhang, J., additional, Zhao, L., additional, Zhao, B., additional, Zheng, Y., additional, Zheng, L., additional, Zhu, B., additional, Zhu, J., additional, Zhu, Y., additional, Zsutty, M., additional, and Zuin, M., additional
Published: 2022
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12. Characterizing the flow and turbulence structure near the last closed flux surface in L-mode plasmas of ASDEX Upgrade

Author: Nishizawa, T., Manz, P., Grenfell, G., Griener, M., Wendler, D., Brida, D., Kriete, D., Dux, R., Kobayashi, T., Sasaki, M., and ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society
Subjects: Condensed Matter Physics
Abstract: Since high density operation is advantageous for building an efficient fusion reactor, understanding the density limit in tokamaks has been seen as one of the most important issues. This paper reports a series of measurements around the last-closed flux surface (LCFS) in L-mode plasmas by using a thermal helium beam diagnostic. Fluctuation analysis has been employed to characterize the poloidal flow and the turbulence structure. A reversal of the poloidal flow in the scrape-off layer and concomitant cooling of the outer divertor plasma are observed as the density is raised. While, in the confined region, the change in the density barely affects the poloidal flow, a higher density shifts the fluctuation power spectral densities toward lower frequencies and wave numbers. The eddy tilting of this region is consistent with what is expected from the magnetic shear effect. A radially coherent low frequency mode appears in the case of the highest density investigated in this study ([Formula: see text] = 0.51), and higher frequencies near the LCFS are modulated by this mode.
Published: 2022

13. 2D measurements of parallel counter-streaming flows in the W7-X scrape-off layer for attached and detached plasmas

Author: W7-X Team, Perseo, V., Winters, V., Feng, Y., Reimold, F., Ford, O. P., König, R., Bozhenkov, S. A., Brunner, K. J., Burhenn, R., Drewelow, P., Ennis, D. A., Gao, Y., Gradic, D., Hacker, P., Hergenhahn, U., Jakubowski, M. W., Knauer, J., Kremeyer, T., Kriete, D. M., Krychowiak, M., Kwak, S., Niemann, H., Pavone, A., Pisano, F., Puig Sitjes, A., Schlisio, G., Svensson, J., Zhang, D., Sunn Pedersen, T., Gantenbein, Gerd, Huber, Martina, Illy, Stefan, Jelonnek, John, Kobarg, Thorsten, Lang, Rouven, Leonhardt, Wolfgang, Mellein, Daniel, Papenfuß, Daniel, Scherer, Theo, Thumm, Manfred, Wadle, Simone, Weggen, Jörg, and W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society
Subjects: Physics, Technology, Nuclear and High Energy Physics, 0103 physical sciences, Plasma, 010306 general physics, Condensed Matter Physics, ddc:600, 01 natural sciences, Layer (electronics), 010305 fluids & plasmas, Computational physics
Abstract: Investigations of particle parallel flow velocities have been carried out for the scrape-off layer (SOL) of the Wendelstein 7-X (W7-X) stellarator, in order to gain insights on the SOL transport properties during attached and detached plasma scenarios. The experimental evidence is based on the coherence imaging spectroscopy (CIS) diagnostic, able to measure 2D impurity emission intensity and flow velocity. The impurity monitored by CIS is C2+, characterized by a line-emission intensity observed to be linearly proportional to the total plasma radiated power in both attached and detached plasmas. The related C2+ velocity shows a strong dependence on the line-averaged electron density while remaining insensitive to the input power. During attached plasmas, the velocity increases with increasing line-averaged density. The tendency reverses in the transition to and during detachment, in which the velocity decreases by at least a factor of 2. The sharp drop in velocity, together with a rise in line-emission intensity, is reliably correlated to the detachment transition and can therefore be used as one of its signatures. The impurity flow velocity appears to be well coupled with the main ions’ one, thus implying the dominant role of impurity-main ion friction in the parallelimpurity transport dynamics. In view of this SOL impurity transport regime, the CIS measurement results are here interpreted with the help of EMC3-Eirene simulations, and their major trends are already explainable with a simple 1D fluid model.
Published: 2021

14. 2D coherence imaging measurements of C ion temperatures in the divertor of Wendelstein 7-X

Author: W7-X Team, Gradic, D., Perseo, V., Kriete, D. M., Krychowiak, M., König, R., Feng, Y., Otte, M., Pedersen, T. Sunn, Gao, Y., Jakubowski, M., Schlisio, G., Warmer, F., Gantenbein, Gerd, Huber, Martina, Illy, Stefan, Jelonnek, John, Kobarg, Thorsten, Lang, Rouven, Leonhardt, Wolfgang, Mellein, Daniel, Papenfuß, Daniel, Scherer, Theo, Thumm, Manfred, Wadle, Simone, and Weggen, Jörg
Subjects: Technology, ddc:600
Published: 2021

15. Effect of magnetic perturbations on turbulence-flow dynamics at the L-H transition on DIII-D

Author: Kriete, D. M., primary, McKee, G. R., additional, Schmitz, L., additional, Smith, D. R., additional, Yan, Z., additional, Morton, L. A., additional, and Fonck, R. J., additional
Published: 2020
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16. DIII-D research towards establishing the scientific basis for future fusion reactors

Author: Abadie, L, Abrams, T, Ahn, J, Akiyama, T, Aleynikov, P, Allcock, J, Allen, E, Allen, S, Anderson, J, Ashourvan, A, Austin, M, Bak, J, Barada, K, Barbour, N, Bardoczi, L, Barr, J, Barton, J, Bass, E, Battaglia, D, Baylor, L, Beckers, J, Belli, E, Berkery, J, Bertelli, N, Bialek, J, Boedo, J, Boivin, R, Bonoli, P, Bortolon, A, Boyer, M, Brambila, R, Bray, B, Brennan, D, Briesemeister, A, Bringuier, S, Brookman, M, Brower, D, Brown, B, Brown, W, Buchenauer, D, Burke, M, Burrell, K, Butt, J, Buttery, R, Bykov, I, Candy, J, Canik, J, Cao, N, Carbajal Gomez, L, Carlson, L, Carlstrom, T, Carter, T, Cary, W, Casali, L, Cengher, M, Chan, V, Chen, B, Chen, J, Chen, M, Chen, R, Chen, X, Choi, W, Chrobak, C, Chrystal, C, Churchill, R, Cianciosa, M, Clauser, C, Clement, M, Coburn, J, Collins, C, Cooper, A, Covele, B, Crippen, J, Crocker, N, Crowley, B, Dal Molin, A, Davis, E, Degrassie, J, del-Castillo-Negrete, C, Delgado-Aparicio, L, Diallo, A, Diem, S, Ding, R, Ding, S, Ding, W, Doane, J, Donovan, D, Drake, J, Du, D, Du, H, Du, X, Duarte, V, Duran, J, Eidietis, N, Elder, D, Eldon, D, Elwasif, W, Ely, T, Eng, K, Engelhorn, K, Ennis, D, Erickson, K, Ernst, D, Evans, T, Fenstermacher, M, Ferraro, N, Ferron, J, Finkenthal, D, Fisher, P, Fishler, B, Flanagan, S, Fooks, J, Frassinetti, L, Frerichs, H, Fu, Y, Fulop, T, Gao, Q, Garcia, F, Garofalo, A, Gattuso, A, Giacomelli, L, Giraldez, E, Giroud, C, Glass, F, Gohil, P, Gong, X, Gorelov, Y, Granetz, R, Green, D, Greenfield, C, Grierson, B, Groebner, R, Grosnickle, W, Groth, M, Grunloh, H, Guo, H, Guo, W, Guterl, J, Hager, R, Hahn, S, Halpern, F, Han, H, Hansink, M, Hanson, J, Harris, J, Haskey, S, Hatch, D, Heidbrink, W, Herfindal, J, Hill, D, Hill, M, Hinson, E, Holcomb, C, Holland, C, Holland, L, Hollmann, E, Holm, A, Hong, R, Hoppe, M, Houshmandyar, S, Howard, J, Howard, N, Hu, Q, Hu, W, Huang, H, Huang, J, Huang, Y, Hughes, G, Hughes, J, Humphreys, D, Hyatt, A, Ida, K, Igochine, V, In, Y, Inoue, S, Isayama, A, Isler, R, 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C, Montes, K, Morales, M, Mordijck, S, Moser, A, Moyer, R, Muller, S, Munaretto, S, Murakami, M, Murphy, C, Muscatello, C, Myers, C, Nagy, A, Navratil, G, Nazikian, R, Neff, A, Neiser, T, Nelson, A, Nguyen, P, Nguyen, R, Nichols, J, Nocente, M, Nygren, R, O'Neill, R, Odstrcil, T, Ohdachi, S, Okabayashi, M, Olofsson, E, Ono, M, Orlov, D, Osborne, T, Pablant, N, Pace, D, Paguio, R, Pajares Martinez, A, Pan, C, Pankin, A, Park, J, Park, Y, Parker, C, Parker, S, Parks, P, Pawley, C, Paz-Soldan, C, Peebles, W, Penaflor, B, Petrie, T, Petty, C, Peysson, Y, Pigarov, A, Piglowski, D, Pinsker, R, Piovesan, P, Piper, N, Pitts, R, Pizzo, J, Podesta, M, Poli, F, Ponce, D, Porkolab, M, Porter, G, Prater, R, Qian, J, Ra, O, Rafiq, T, Raman, R, Rand, C, Randall, G, Rauch, J, Rea, C, Reinke, M, Ren, J, Ren, Q, Ren, Y, Rhodes, T, Rice, J, Rognlien, T, Rost, J, Rowan, W, Rudakov, D, Salmi, A, Sammuli, B, Samuell, C, Sandorfi, A, Sang, C, Sauter, O, Schissel, D, Schmitz, L, Schmitz, O, Schuster, E, Scoville, J, Seltzman, A, Sfiligoi, I, Shafer, M, Shen, H, Shi, T, Shiraki, D, Si, H, Smith, D, Smith, S, Snipes, J, Snyder, P, Solano, E, Solomon, W, Sontag, A, Soukhanovskii, V, Spong, D, Stacey, W, Staebler, G, Stagner, L, Stahl, B, Stangeby, P, Stoltzfus-Dueck, T, Stotler, D, Strait, E, Su, D, Sugiyama, L, Sulyman, A, Sun, Y, Sung, C, Suttrop, W, Suzuki, Y, Svyatkovskiy, A, Sweeney, R, Taimourzadeh, S, Takechi, M, Tala, T, Tan, H, Tang, S, Tang, X, Taussig, D, Taylor, G, Taylor, N, Taylor, T, Teklu, A, Thomas, D, Thomas, M, Thome, K, Thorman, A, Tinguely, R, Tobias, B, Tooker, J, Torreblanca, H, Torrezan De Sousa, A, Trevisan, G, Truong, D, Turco, F, Turnbull, A, Unterberg, E, Vaezi, P, Vail, P, Van Zeeland, M, Velasco Enriquez, M, Venkatesh, M, Victor, B, Volpe, F, Wade, M, Walker, M, Wall, J, Wallace, G, Waltz, R, Wang, G, Wang, H, Wang, Y, Wang, Z, Wang, F, Ward, S, Watkins, J, Watkins, M, Wehner, W, Weiland, M, Weisberg, D, Welander, A, White, A, White, R, Whyte, D, Wijkamp, T, Wilcox, R, Wilks, T, Wilson, H, Wingen, A, Wolfe, E, Wu, M, Wu, W, Wukitch, S, Xia, T, Xiang, N, Xiao, B, Xie, R, Xu, G, Xu, H, Xu, X, Yan, Z, Yang, Q, Yang, X, Yoshida, M, Yu, G, Yu, J, Yu, M, Zamperini, S, Zeng, L, Zhao, B, Zhao, D, Zhao, H, Zhao, Y, Zhu, Y, Zywicki, B, L. Abadie, T. W. Abrams, J. Ahn, T. Akiyama, P. Aleynikov, J. Allcock, E. O. Allen, S. Allen, J. P. Anderson, A. Ashourvan, M. E. Austin, J. Bak, K. K. Barada, N. Barbour, L. Bardoczi, J. Barr, J. L. Barton, E. M. Bass, D. Battaglia, L. R. Baylor, J. Beckers, E. A. Belli, J. W. Berkery, N. Bertelli, J. M. Bialek, J. A. Boedo, R. L. Boivin, P. T. Bonoli, A. Bortolon, M. D. Boyer, R. E. Brambila, B. Bray, D. P. Brennan, A. R. Briesemeister, S. A. Bringuier, M. W. Brookman, D. L. Brower, B. R. Brown, W. D. Brown, D. Buchenauer, M. G. Burke, K. H. Burrell, J. Butt, R. J. Buttery, I. Bykov, J. M. Candy, J. M. Canik, N. M. Cao, L. Carbajal Gomez, L. C. Carlson, T. N. Carlstrom, T. A. Carter, W. Cary, L. Casali, M. Cengher, V. S. Chan, B. Chen, J. Chen, M. Chen, R. Chen, Xi Chen, W. Choi, C. Chrobak, C. Chrystal, R. M. Churchill, M. Cianciosa, C. F. Clauser, M. Clement, J. Coburn, C. S. Collins, A. W. Cooper, B. M. Covele, J. W. Crippen, N. A. Crocker, B. J. Crowley, A. Dal Molin, E. M. Davis, J. S. deGrassie, C. A. del-Castillo-Negrete, L. F. Delgado-Aparicio, A. Diallo, S. J. Diem, R. Ding, S. Ding, W. Ding, J. L. Doane, D. C. Donovan, J. Drake, D. Du, H. Du, X. Du, V. Duarte, J. D. Duran, N. W. Eidietis, D. Elder, D. Eldon, W. Elwasif, T. E. Ely, K. M. Eng, K. Engelhorn, D. Ennis, K. Erickson, D. R. Ernst, T. E. Evans, M. E. Fenstermacher, N. M. Ferraro, J. R. Ferron, D. F. Finkenthal, P. A. Fisher, B. Fishler, S. M. Flanagan, J. A. Fooks, L. Frassinetti, H. G. Frerichs, Y. Fu, T. Fulop, Q. Gao, F. Garcia, A. M. Garofalo, A. Gattuso, L. Giacomelli, E. M. Giraldez, C. Giroud, F. Glass, P. Gohil, X. Gong, Y. A. Gorelov, R. S. Granetz, D. L. Green, C. M. Greenfield, B. A. Grierson, R. J. Groebner, W. H. Grosnickle, M. Groth, H. J. Grunloh, H. Y. Guo, W. Guo, J. Guterl, R. C. Hager, S. Hahn, F. D. Halpern, H. Han, M. J. Hansink, J. M. Hanson, J. Harris, S. R. Haskey, D. R. Hatch, W. W. Heidbrink, J. Herfindal, D. N. Hill, M. D. Hill, E. T. Hinson, C. T. Holcomb, C. G. 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C, Montes, K, Morales, M, Mordijck, S, Moser, A, Moyer, R, Muller, S, Munaretto, S, Murakami, M, Murphy, C, Muscatello, C, Myers, C, Nagy, A, Navratil, G, Nazikian, R, Neff, A, Neiser, T, Nelson, A, Nguyen, P, Nguyen, R, Nichols, J, Nocente, M, Nygren, R, O'Neill, R, Odstrcil, T, Ohdachi, S, Okabayashi, M, Olofsson, E, Ono, M, Orlov, D, Osborne, T, Pablant, N, Pace, D, Paguio, R, Pajares Martinez, A, Pan, C, Pankin, A, Park, J, Park, Y, Parker, C, Parker, S, Parks, P, Pawley, C, Paz-Soldan, C, Peebles, W, Penaflor, B, Petrie, T, Petty, C, Peysson, Y, Pigarov, A, Piglowski, D, Pinsker, R, Piovesan, P, Piper, N, Pitts, R, Pizzo, J, Podesta, M, Poli, F, Ponce, D, Porkolab, M, Porter, G, Prater, R, Qian, J, Ra, O, Rafiq, T, Raman, R, Rand, C, Randall, G, Rauch, J, Rea, C, Reinke, M, Ren, J, Ren, Q, Ren, Y, Rhodes, T, Rice, J, Rognlien, T, Rost, J, Rowan, W, Rudakov, D, Salmi, A, Sammuli, B, Samuell, C, Sandorfi, A, Sang, C, Sauter, O, Schissel, D, Schmitz, L, Schmitz, O, Schuster, E, Scoville, J, Seltzman, A, Sfiligoi, I, Shafer, M, Shen, H, Shi, T, Shiraki, D, Si, H, Smith, D, Smith, S, Snipes, J, Snyder, P, Solano, E, Solomon, W, Sontag, A, Soukhanovskii, V, Spong, D, Stacey, W, Staebler, G, Stagner, L, Stahl, B, Stangeby, P, Stoltzfus-Dueck, T, Stotler, D, Strait, E, Su, D, Sugiyama, L, Sulyman, A, Sun, Y, Sung, C, Suttrop, W, Suzuki, Y, Svyatkovskiy, A, Sweeney, R, Taimourzadeh, S, Takechi, M, Tala, T, Tan, H, Tang, S, Tang, X, Taussig, D, Taylor, G, Taylor, N, Taylor, T, Teklu, A, Thomas, D, Thomas, M, Thome, K, Thorman, A, Tinguely, R, Tobias, B, Tooker, J, Torreblanca, H, Torrezan De Sousa, A, Trevisan, G, Truong, D, Turco, F, Turnbull, A, Unterberg, E, Vaezi, P, Vail, P, Van Zeeland, M, Velasco Enriquez, M, Venkatesh, M, Victor, B, Volpe, F, Wade, M, Walker, M, Wall, J, Wallace, G, Waltz, R, Wang, G, Wang, H, Wang, Y, Wang, Z, Wang, F, Ward, S, Watkins, J, Watkins, M, Wehner, W, Weiland, M, Weisberg, D, Welander, A, White, A, White, R, Whyte, D, Wijkamp, T, Wilcox, R, Wilks, T, Wilson, H, Wingen, A, Wolfe, E, Wu, M, Wu, W, Wukitch, S, Xia, T, Xiang, N, Xiao, B, Xie, R, Xu, G, Xu, H, Xu, X, Yan, Z, Yang, Q, Yang, X, Yoshida, M, Yu, G, Yu, J, Yu, M, Zamperini, S, Zeng, L, Zhao, B, Zhao, D, Zhao, H, Zhao, Y, Zhu, Y, Zywicki, B, L. Abadie, T. W. Abrams, J. Ahn, T. Akiyama, P. Aleynikov, J. Allcock, E. O. Allen, S. Allen, J. P. Anderson, A. Ashourvan, M. E. Austin, J. Bak, K. K. Barada, N. Barbour, L. Bardoczi, J. Barr, J. L. Barton, E. M. Bass, D. Battaglia, L. R. Baylor, J. Beckers, E. A. Belli, J. W. Berkery, N. Bertelli, J. M. Bialek, J. A. Boedo, R. L. Boivin, P. T. Bonoli, A. Bortolon, M. D. Boyer, R. E. Brambila, B. Bray, D. P. Brennan, A. R. Briesemeister, S. A. Bringuier, M. W. Brookman, D. L. Brower, B. R. Brown, W. D. Brown, D. Buchenauer, M. G. Burke, K. H. Burrell, J. Butt, R. J. Buttery, I. Bykov, J. M. Candy, J. M. Canik, N. M. Cao, L. Carbajal Gomez, L. C. Carlson, T. N. Carlstrom, T. A. Carter, W. Cary, L. Casali, M. Cengher, V. S. Chan, B. Chen, J. Chen, M. Chen, R. Chen, Xi Chen, W. Choi, C. Chrobak, C. Chrystal, R. M. Churchill, M. Cianciosa, C. F. Clauser, M. Clement, J. Coburn, C. S. Collins, A. W. Cooper, B. M. Covele, J. W. Crippen, N. A. Crocker, B. J. Crowley, A. Dal Molin, E. M. Davis, J. S. deGrassie, C. A. del-Castillo-Negrete, L. F. Delgado-Aparicio, A. Diallo, S. J. Diem, R. Ding, S. Ding, W. Ding, J. L. Doane, D. C. Donovan, J. Drake, D. Du, H. Du, X. Du, V. Duarte, J. D. Duran, N. W. Eidietis, D. Elder, D. Eldon, W. Elwasif, T. E. Ely, K. M. Eng, K. Engelhorn, D. Ennis, K. Erickson, D. R. Ernst, T. E. Evans, M. E. Fenstermacher, N. M. Ferraro, J. R. Ferron, D. F. Finkenthal, P. A. Fisher, B. Fishler, S. M. Flanagan, J. A. Fooks, L. Frassinetti, H. G. Frerichs, Y. Fu, T. Fulop, Q. Gao, F. Garcia, A. M. Garofalo, A. Gattuso, L. Giacomelli, E. M. Giraldez, C. Giroud, F. Glass, P. Gohil, X. Gong, Y. A. Gorelov, R. S. Granetz, D. L. Green, C. M. Greenfield, B. A. Grierson, R. J. Groebner, W. H. Grosnickle, M. Groth, H. J. Grunloh, H. Y. Guo, W. Guo, J. Guterl, R. C. Hager, S. Hahn, F. D. Halpern, H. Han, M. J. Hansink, J. M. Hanson, J. Harris, S. R. Haskey, D. R. Hatch, W. W. Heidbrink, J. Herfindal, D. N. Hill, M. D. Hill, E. T. Hinson, C. T. Holcomb, C. G. 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A. Peebles, B. G. Penaflor, T. W. Petrie, C. C. Petty, Y. Peysson, A. Y. Pigarov, D. A. Piglowski, R. I. Pinsker, P. Piovesan, N. Piper, R. A. Pitts, J. D. Pizzo, M. L. Podesta, F. M. Poli, D. Ponce, M. Porkolab, G. D. Porter, R. Prater, J. Qian, O. Ra, T. Rafiq, R. Raman, C. Rand, G. C. Randall, J. M. Rauch, C. Rea, M. L. Reinke, J. Ren, Q. Ren, Y. Ren, T. L. Rhodes, J. Rice, T. D. Rognlien, J. C. Rost, W. L. Rowan, D. L. Rudakov, A. Salmi, B. S. Sammuli, C. M. Samuell, A. M. Sandorfi, C. Sang, O. J. Sauter, D. P. Schissel, L. Schmitz, O. Schmitz, E. J. Schuster, J. T. Scoville, A. Seltzman, I. Sfiligoi, M. Shafer, H. Shen, T. Shi, D. Shiraki, H. Si, D. R. Smith, S. P. Smith, J. A. Snipes, P. B. Snyder, E. R. Solano, W. M. Solomon, A. C. Sontag, V. A. Soukhanovskii, D. A. Spong, W. M. Stacey, G. M. Staebler, L. Stagner, B. Stahl, P. C. Stangeby, T. J. Stoltzfus-Dueck, D. P. Stotler, E. J. Strait, D. Su, L. E. Sugiyama, A. A. Sulyman, Y. Sun, C. Sung, W. A. Suttrop, Y. Suzuki, A. Svyatkovskiy, R. M. Sweeney, S. Taimourzadeh, M. Takechi, T. Tala, H. Tan, S. Tang, X. Tang, D. Taussig, G. Taylor, N. Z. Taylor, T. S. Taylor, A. Teklu, D. M. Thomas, M. B. Thomas, K. E. Thome, A. R. Thorman, R. A. Tinguely, B. J. Tobias, J. F. Tooker, H. Torreblanca, A. Torrezan De Sousa, G. L. Trevisan, D. Truong, F. Turco, A. D. Turnbull, E. A. Unterberg, P. Vaezi, P. J. Vail, M. A. Van Zeeland, M. Velasco Enriquez, M. C. Venkatesh, B. S. Victor, F. Volpe, M. R. Wade, M. L. Walker, J. R. Wall, G. M. Wallace, R. E. Waltz, G. Wang, H. Wang, Y. Wang, Z. Wang, F. Wang, S. H. Ward, J. G. Watkins, M. Watkins, W. P. Wehner, M. Weiland, D. B. Weisberg, A. S. Welander, A. E. White, R. B. White, D. Whyte, T. A. Wijkamp, R. Wilcox, T. Wilks, H. R. Wilson, A. Wingen, E. Wolfe, M. Wu, W. Wu, S. J. Wukitch, T. Xia, N. Xiang, B. Xiao, R. Xie, G. Xu, H. Xu, X. Xu, Z. Yan, Q. Yang, X. Yang, M. Yoshida, G. Yu, J. H. Yu, M. Yu, S. A. Zamperini, L. Zeng, B. Zhao, D. Zhao, H. Zhao, Y. Zhao, Y. Zhu, and B. Zywicki
Abstract: DIII-D research is addressing critical challenges in preparation for ITER and the next generation of fusion devices through focusing on plasma physics fundamentals that underpin key fusion goals, understanding the interaction of disparate core and boundary plasma physics, and developing integrated scenarios for achieving high performance fusion regimes. Fundamental investigations into fusion energy science find that anomalous dissipation of runaway electrons (RE) that arise following a disruption is likely due to interactions with RE-driven kinetic instabilities, some of which have been directly observed, opening a new avenue for RE energy dissipation using naturally excited waves. Dimensionless parameter scaling of intrinsic rotation and gyrokinetic simulations give a predicted ITER rotation profile with significant turbulence stabilization. Coherence imaging spectroscopy confirms near sonic flow throughout the divertor towards the target, which may account for the convection-dominated parallel heat flux. Core-boundary integration studies show that the small angle slot divertor achieves detachment at lower density and extends plasma cooling across the divertor target plate, which is essential for controlling heat flux and erosion. The Super H-mode regime has been extended to high plasma current (2.0 MA) and density to achieve very high pedestal pressures (∼30 kPa) and stored energy (3.2 MJ) with H 98y2 ≈ 1.6-2.4. In scenario work, the ITER baseline Q = 10 scenario with zero injected torque is found to have a fusion gain metric independent of current between q 95 = 2.8-3.7, and a lower limit of pedestal rotation for RMP ELM suppression has been found. In the wide pedestal QH-mode regime that exhibits improved performance and no ELMs, the start-up counter torque has been eliminated so that the entire discharge uses ≈0 injected torque and the operating space is more ITER-relevant. Finally, the high- (3.8) hybrid scenario has been extended to the high-density levels ne
Published: 2019

17. Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry

Author: Kriete, D. M., primary, McKee, G. R., additional, Fonck, R. J., additional, Smith, D. R., additional, Whelan, G. G., additional, and Yan, Z., additional
Published: 2018
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18. High Confinement Mode and Edge Localized Mode Characteristics in a Near-Unity Aspect Ratio Tokamak

Author: Thome, K. E., primary, Bongard, M. W., additional, Barr, J. L., additional, Bodner, G. M., additional, Burke, M. G., additional, Fonck, R. J., additional, Kriete, D. M., additional, Perry, J. M., additional, and Schlossberg, D. J., additional
Published: 2016
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19. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author: M. E. Fenstermacher, J. Abbate, S. Abe, T. Abrams, M. Adams, B. Adamson, N. Aiba, T. Akiyama, P. Aleynikov, E. Allen, S. Allen, H. Anand, J. Anderson, Y. Andrew, T. Andrews, D. Appelt, R. Arbon, N. Ashikawa, A. Ashourvan, M. Aslin, Y. Asnis, M. Austin, D. Ayala, J. Bak, I. Bandyopadhyay, S. Banerjee, K. Barada, L. Bardoczi, J. Barr, E. Bass, D. Battaglia, A. Battey, W. Baumgartner, L. Baylor, J. Beckers, M. Beidler, E. Belli, J. Berkery, T. Bernard, N. Bertelli, M. Beurskens, R. Bielajew, S. Bilgili, B. Biswas, S. Blondel, J. Boedo, I. Bogatu, R. Boivin, T. Bolzonella, M. Bongard, X. Bonnin, P. Bonoli, M. Bonotto, A. Bortolon, S. Bose, N. Bosviel, S. Bouwmans, M. Boyer, W. Boyes, L. Bradley, R. Brambila, D. Brennan, S. Bringuier, L. Brodsky, M. Brookman, J. Brooks, D. Brower, G. Brown, W. Brown, M. Burke, K. Burrell, K. Butler, R. Buttery, I. Bykov, P. Byrne, A. Cacheris, K. Callahan, J. Callen, G. Campbell, J. Candy, J. Canik, P. Cano-Megias, N. Cao, L. Carayannopoulos, T. Carlstrom, W. Carrig, T. Carter, W. Cary, L. Casali, M. Cengher, G. Cespedes Paz, R. Chaban, V. Chan, B. Chapman, I. Char, A. Chattopadhyay, R. Chen, J. Chen, X. Chen, M. Chen, Z. Chen, M. Choi, W. Choi, G. Choi, L. Chousal, C. Chrobak, C. Chrystal, Y. Chung, R. Churchill, M. Cianciosa, J. Clark, M. Clement, S. Coda, A. Cole, C. Collins, W. Conlin, A. Cooper, J. Cordell, B. Coriton, T. Cote, J. Cothran, A. Creely, N. Crocker, C. Crowe, B. Crowley, T. Crowley, D. Cruz-Zabala, D. Cummings, M. Curie, D. Curreli, A. Dal Molin, B. Dannels, A. Dautt-Silva, K. Davda, G. De Tommasi, P. De Vries, G. Degrandchamp, J. Degrassie, D. Demers, S. Denk, S. Depasquale, E. Deshazer, A. Diallo, S. Diem, A. Dimits, R. Ding, S. Ding, W. Ding, T. Do, J. Doane, G. Dong, D. Donovan, J. Drake, W. Drews, J. Drobny, X. Du, H. Du, V. Duarte, D. Dudt, C. Dunn, J. Duran, A. Dvorak, F. Effenberg, N. Eidietis, D. Elder, D. Eldon, R. Ellis, W. Elwasif, D. Ennis, K. Erickson, D. Ernst, M. Fasciana, D. Fedorov, E. Feibush, N. Ferraro, J. Ferreira, J. Ferron, P. Fimognari, D. Finkenthal, R. Fitzpatrick, P. Fox, W. Fox, L. Frassinetti, H. Frerichs, H. Frye, Y. Fu, K. Gage, J. Galdon Quiroga, A. Gallo, Q. Gao, A. Garcia, M. Garcia Munoz, D. Garnier, A. Garofalo, A. Gattuso, D. Geng, K. Gentle, D. Ghosh, L. Giacomelli, S. Gibson, E. Gilson, C. Giroud, F. Glass, A. Glasser, D. Glibert, P. Gohil, R. Gomez, S. Gomez, X. Gong, E. Gonzales, A. Goodman, Y. Gorelov, V. Graber, R. Granetz, T. Gray, D. Green, C. Greenfield, M. Greenwald, B. Grierson, R. Groebner, W. Grosnickle, M. Groth, H. Grunloh, S. Gu, W. Guo, H. Guo, P. Gupta, J. Guterl, W. Guttenfelder, T. Guzman, S. Haar, R. Hager, S. Hahn, M. Halfmoon, T. Hall, K. Hallatschek, F. Halpern, G. Hammett, H. Han, E. Hansen, C. Hansen, M. Hansink, J. Hanson, M. Hanson, G. Hao, A. Harris, R. Harvey, S. Haskey, E. Hassan, A. Hassanein, D. Hatch, R. Hawryluk, W. Hayashi, W. Heidbrink, J. Herfindal, J. Hicok, D. Hill, E. Hinson, C. Holcomb, L. Holland, C. 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S, Kulchar, J, Kwon, K, La Haye, R, Laggner, F, Lan, H, Lantsov, R, Lao, L, Esquisabel, A, Lasnier, C, Lau, C, Leard, B, Lee, J, Lee, R, Lee, M, Lee, Y, Lee, C, Lee, S, Lehnen, M, Leonard, A, Leppink, E, Lesher, M, Lestz, J, Leuer, J, Leuthold, N, Li, X, Li, K, Li, E, Li, G, Li, L, Li, Z, Li, J, Li, Y, Lin, Z, Lin, D, Liu, X, Liu, J, Liu, Y, Liu, T, Liu, C, Liu, Z, Liu, D, Liu, A, Loarte-Prieto, A, Lodestro, L, Logan, N, Lohr, J, Lombardo, B, Lore, J, Luan, Q, Luce, T, Di Cortemiglia, T, Luhmann, N, Lunsford, R, Luo, Z, Lvovskiy, A, Lyons, B, Ma, X, Madruga, M, Madsen, B, Maggi, C, Maheshwari, K, Mail, A, Mailloux, J, Maingi, R, Major, M, Makowski, M, Manchanda, R, Marini, C, Marinoni, A, Maris, A, Markovic, T, Marrelli, L, Martin, E, Mateja, J, Matsunaga, G, Maurizio, R, Mauzey, P, Mauzey, D, Mcardle, G, Mcclenaghan, J, Mccollam, K, Mcdevitt, C, Mckay, K, Mckee, G, Mclean, A, Mehta, V, Meier, E, Menard, J, Meneghini, O, Merlo, G, Messer, S, Meyer, W, Michael, C, Michoski, C, Milne, P, Minet, G, Misleh, A, Mitrishkin, Y, Moeller, C, Montes, K, Morales, M, Mordijck, S, Moreau, D, Morosohk, S, Morris, P, Morton, L, Moser, A, Moyer, R, Moynihan, C, Mrazkova, T, Mueller, D, Munaretto, S, Burgos, J, Murphy, C, Murphy, K, Muscatello, C, Myers, C, Nagy, A, Nandipati, G, Navarro, M, Nave, F, Navratil, G, Nazikian, R, Neff, A, Neilson, G, Neiser, T, Neiswanger, W, Nelson, D, Nelson, A, Nespoli, F, Nguyen, R, Nguyen, L, Nguyen, X, Nichols, J, Nocente, M, Nogami, S, Noraky, S, Norausky, N, Nornberg, M, Nygren, R, Odstrcil, T, Ogas, D, Ogorman, T, Ohdachi, S, Ohtani, Y, Okabayashi, M, Okamoto, M, Olavson, L, Olofsson, E, Omullane, M, Oneill, R, Orlov, D, Orvis, W, Osborne, T, Pace, D, Canal, G, Martinez, A, Palacios, L, Pan, C, Pan, Q, Pandit, R, Pandya, M, Pankin, A, Park, Y, Park, J, Parker, S, Parks, P, Parsons, M, Patel, B, Pawley, C, Paz-Soldan, C, Peebles, W, Pelton, S, Perillo, R, Petty, C, Peysson, Y, Pierce, D, Pigarov, A, Pigatto, L, Piglowski, D, Pinches, S, Pinsker, R, Piovesan, P, Piper, N, Pironti, A, Pitts, R, Pizzo, J, Plank, U, Podesta, M, Poli, E, Poli, F, Ponce, D, Popovic, Z, Porkolab, M, Porter, G, Powers, C, Powers, S, Prater, R, Pratt, Q, Pusztai, I, Qian, J, Qin, X, Ra, O, Rafiq, T, Raines, T, Raman, R, Rauch, J, Raymond, A, Rea, C, Reich, M, Reiman, A, Reinhold, S, Reinke, M, Reksoatmodjo, R, Ren, Q, Ren, Y, Ren, J, Rensink, M, Renteria, J, Rhodes, T, Rice, J, Roberts, R, Robinson, J, Fernandez, P, Rognlien, T, Rosenthal, A, Rosiello, S, Rost, J, Roveto, J, Rowan, W, Rozenblat, R, Ruane, J, Rudakov, D, Ruiz, J, Rupani, R, Saarelma, S, Sabbagh, S, Sachdev, J, Saenz, J, Saib, S, Salewski, M, Salmi, A, Sammuli, B, Samuell, C, Sandorfi, A, Sang, C, Sarff, J, Sauter, O, Schaubel, K, Schmitz, L, Schmitz, O, Schneider, J, Schroeder, P, Schultz, K, Schuster, E, Schwartz, J, Sciortino, F, Scotti, F, Scoville, J, Seltzman, A, Seol, S, Sfiligoi, I, Shafer, M, Sharapov, S, Shen, H, Sheng, Z, Shepard, T, Shi, S, Shibata, Y, Shin, G, Shiraki, D, 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Zhu, B, Zhu, J, Zhu, Y, Zsutty, M, Zuin, M, Lawrence Livermore National Laboratory, Princeton Plasma Physics Laboratory, Princeton University, General Atomics, Max-Planck-Institut für Plasmaphysik, Imperial College London, National Institute for Fusion Science, Universidade de São Paulo, University of Texas at Austin, ITER, College of William and Mary, University of California Los Angeles, University of California San Diego, Columbia University, Massachusetts Institute of Technology, Oak Ridge National Laboratory, Eindhoven University of Technology, Oak Ridge Associated Universities, West Virginia University, University of Tennessee, Knoxville, National Research Council of Italy, Stony Brook University, Purdue University, University of Seville, University of Science and Technology of China, Carnegie Mellon University, Institute for Plasma Research, Peking University, University of California Davis, University of California Irvine, Commonwealth Fusion Systems, University of Liverpool, University of Illinois at Urbana-Champaign, University of Milan - Bicocca, Georgia Institute of Technology, Southwestern Institute of Physics, University of Toronto, Auburn University, Polytechnic University of Turin, Universidade Lisboa, Association CCFE, KTH Royal Institute of Technology, San Diego State University, Durham University, Lehigh University, Fusion and Plasma Physics, University of Washington, Department of Applied Physics, Sandia National Laboratories, Ghent University, Technical University of Denmark, CEA, University of Colorado Boulder, Harvard University, National Technical University of Athens, Coventry University, University of Stuttgart, Czech Academy of Sciences, Harvey Mudd College, Seoul National University, Donghua University, University of York, Dalian University of Technology, University of California Berkeley, Los Alamos National Laboratory, United States Department of Energy, University of British Columbia, Pacific Northwest National Laboratory, University of Wisconsin, Michigan State University, University of Strathclyde, Pennsylvania State University, Rensselaer Polytechnic Institute, University of Southern California, Chalmers University of Technology, University of Virginia, University of Naples Federico II, University of Oxford, VTT Technical Research Centre of Finland, National Institute of Technology, University of Connecticut, DIFFER, CIEMAT, Hanyang University, Brigham Young University, UiT The Arctic University of Norway, Australian National University, Russian Research Centre Kurchatov Institute, Forschungszentrum Jülich, Zhejiang University, The University of Tokyo, University of Michigan, Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile, Aalto-yliopisto, Aalto University, DIII-D Team, Complex Ionized Media, Elementary Processes in Gas Discharges, Applied Physics and Science Education, Science and Technology of Nuclear Fusion, and Control Systems Technology
Subjects: Nuclear and High Energy Physics, Tokamak, Technology and Engineering, DIII-D, Nuclear engineering, TOKAMAKS, MITIGATION, law.invention, Plasma physics, mitigation, law, plasma physic, tokamak, Physics, Core-edge integration, Basis (linear algebra), plasma physics, core-edge integration, scenarios, Fusion power, Condensed Matter Physics, SCENARIOS, fusion energy, Fusion energy
Abstract: Funding Information: This material is based upon work supported by the US Department of Energy, Office of Science, Office of Fusion Energy Sciences, using the DIII-D National Fusion Facility, a DOE Office of Science user facility, under Awards DE-FC02-04ER54698 and DE-AC52-07NA27344. Publisher Copyright: © 2022 IAEA, Vienna. DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices. This is done through a focus on innovations to provide solutions for high performance long pulse operation, coupled with fundamental plasma physics understanding and model validation, to drive scenario development by integrating high performance core and boundary plasmas. Substantial increases in off-axis current drive efficiency from an innovative top launch system for EC power, and in pressure broadening for Alfven eigenmode control from a co-/counter-I p steerable off-axis neutral beam, all improve the prospects for optimization of future long pulse/steady state high performance tokamak operation. Fundamental studies into the modes that drive the evolution of the pedestal pressure profile and electron vs ion heat flux validate predictive models of pedestal recovery after ELMs. Understanding the physics mechanisms of ELM control and density pumpout by 3D magnetic perturbation fields leads to confident predictions for ITER and future devices. Validated modeling of high-Z shattered pellet injection for disruption mitigation, runaway electron dissipation, and techniques for disruption prediction and avoidance including machine learning, give confidence in handling disruptivity for future devices. For the non-nuclear phase of ITER, two actuators are identified to lower the L-H threshold power in hydrogen plasmas. With this physics understanding and suite of capabilities, a high poloidal beta optimized-core scenario with an internal transport barrier that projects nearly to Q = 10 in ITER at ∼8 MA was coupled to a detached divertor, and a near super H-mode optimized-pedestal scenario with co-I p beam injection was coupled to a radiative divertor. The hybrid core scenario was achieved directly, without the need for anomalous current diffusion, using off-axis current drive actuators. Also, a controller to assess proximity to stability limits and regulate β N in the ITER baseline scenario, based on plasma response to probing 3D fields, was demonstrated. Finally, innovative tokamak operation using a negative triangularity shape showed many attractive features for future pilot plant operation.
Published: 2022

20. Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X

Author: Thomas Sunn Pedersen, I. Abramovic, P. Agostinetti, M. Agredano Torres, S. Äkäslompolo, J. Alcuson Belloso, P. Aleynikov, K. Aleynikova, M. Alhashimi, A. Ali, N. Allen, A. Alonso, G. Anda, T. Andreeva, C. Angioni, A. Arkhipov, A. Arnold, W. Asad, E. Ascasibar, M.-H. Aumeunier, K. Avramidis, E. Aymerich, S.-G. Baek, J. Bähner, A. Baillod, M. Balden, J. Baldzuhn, S. Ballinger, M. Banduch, S. Bannmann, A. Banon Navarro, A. Bañón Navarro, T. Barbui, C. Beidler, C. Belafdil, A. Bencze, A. Benndorf, M. Beurskens, C. Biedermann, O. Biletskyi, B. Blackwell, M. Blatzheim, T. Bluhm, D. Böckenhoff, G. Bongiovi, M. Borchardt, D. Borodin, J. Boscary, H. Bosch, T. Bosmann, B. Böswirth, L. Böttger, A. Bottino, S. Bozhenkov, R. Brakel, C. Brandt, T. Bräuer, H. Braune, S. Brezinsek, K. Brunner, S. Buller, R. Burhenn, R. Bussiahn, B. Buttenschön, A. Buzás, V. Bykov, I. Calvo, K. Camacho Mata, I. Caminal, B. Cannas, A. Cappa, A. Carls, F. Carovani, M. Carr, D. Carralero, B. Carvalho, J. Casas, D. Castano-Bardawil, F. Castejon, N. Chaudhary, I. Chelis, A. Chomiczewska, J.W. Coenen, M. Cole, F. Cordella, Y. Corre, K. Crombe, G. Cseh, B. Csillag, H. Damm, C. Day, M. de Baar, E. De la Cal, S. Degenkolbe, A. Demby, S. Denk, C. Dhard, A. Di Siena, A. Dinklage, T. Dittmar, M. Dreval, M. Drevlak, P. Drewelow, P. Drews, D. Dunai, E. Edlund, F. Effenberg, G. Ehrke, M. Endler, D.A. Ennis, F.J. Escoto, T. Estrada, E. Fable, N. Fahrenkamp, A. Fanni, J. Faustin, J. Fellinger, Y. Feng, W. Figacz, E. Flom, O. Ford, T. Fornal, H. Frerichs, S. Freundt, G. Fuchert, M. Fukuyama, F. Füllenbach, G. Gantenbein, Y. Gao, K. Garcia, J.M. García Regaña, I. García-Cortés, J. Gaspar, D.A. Gates, J. Geiger, B. Geiger, L. Giudicotti, A. González, A. Goriaev, D. Gradic, M. Grahl, J.P. Graves, J. Green, E. Grelier, H. Greuner, S. Groß, H. Grote, M. Groth, M. Gruca, O. Grulke, M. Grün, J. Guerrero Arnaiz, S. Günter, V. Haak, M. Haas, P. Hacker, A. Hakola, A. Hallenbert, K. Hammond, X. Han, S.K. Hansen, J.H. Harris, H. Hartfuß, D. Hartmann, D. Hathiramani, R. Hatzky, J. Hawke, S. Hegedus, B. Hein, B. Heinemann, P. Helander, S. Henneberg, U. Hergenhahn, C. Hidalgo, F. Hindenlang, M. Hirsch, U. Höfel, K.P. Hollfeld, A. Holtz, D. Hopf, D. Höschen, M. Houry, J. Howard, X. Huang, M. Hubeny, S. Hudson, K. Ida, Y. Igitkhanov, V. Igochine, S. Illy, C. Ionita-Schrittwieser, M. Isobe, M. Jabłczyńska, S. Jablonski, B. Jagielski, M. Jakubowski, A. Jansen van Vuuren, J. Jelonnek, F. Jenko, T. Jensen, H. Jenzsch, P. Junghanns, J. Kaczmarczyk, J. Kallmeyer, U. Kamionka, M. Kandler, S. Kasilov, Y. Kazakov, D. Kennedy, A. Kharwandikar, M. Khokhlov, C. Kiefer, C. Killer, A. Kirschner, R. Kleiber, T. Klinger, S. Klose, J. Knauer, A. Knieps, F. Köchl, G. Kocsis, Ya.I. Kolesnichenko, A. Könies, R. König, J. Kontula, P. Kornejew, J. Koschinsky, M.M. Kozulia, A. Krämer-Flecken, R. Krampitz, M. Krause, N. Krawczyk, T. Kremeyer, L. Krier, D.M. Kriete, M. Krychowiak, I. Ksiazek, M. Kubkowska, M. Kuczynski, G. Kühner, A. Kumar, T. Kurki-Suonio, S. Kwak, M. Landreman, P.T. Lang, A. Langenberg, H.P. Laqua, H. Laqua, R. Laube, S. Lazerson, M. Lewerentz, C. Li, Y. Liang, Ch. Linsmeier, J. Lion, A. Litnovsky, S. Liu, J. Lobsien, J. Loizu, J. Lore, A. Lorenz, U. Losada, F. Louche, R. Lunsford, V. Lutsenko, M. Machielsen, F. Mackel, J. Maisano-Brown, O. Maj, D. Makowski, G. Manduchi, E. Maragkoudakis, O. Marchuk, S. Marsen, E. Martines, J. Martinez-Fernandez, M. Marushchenko, S. Masuzaki, D. Maurer, M. Mayer, K.J. McCarthy, O. Mccormack, P. McNeely, H. Meister, B. Mendelevitch, S. Mendes, A. Merlo, A. Messian, A. Mielczarek, O. Mishchenko, B. Missal, R. Mitteau, V.E. Moiseenko, A. Mollen, V. Moncada, T. Mönnich, T. Morisaki, D. Moseev, G. Motojima, S. Mulas, M. Mulsow, M. Nagel, D. Naujoks, V. Naulin, T. Neelis, H. Neilson, R. Neu, O. Neubauer, U. Neuner, D. Nicolai, S.K. Nielsen, H. Niemann, T. Nishiza, T. Nishizawa, C. Nührenberg, R. Ochoukov, J. Oelmann, G. Offermanns, K. Ogawa, S. Okamura, J. Ölmanns, J. Ongena, J. Oosterbeek, M. Otte, N. Pablant, N. Panadero Alvarez, A. Pandey, E. Pasch, R. Pavlichenko, A. Pavone, E. Pawelec, G. Pechstein, G. Pelka, V. Perseo, B. Peterson, D. Pilopp, S. Pingel, F. Pisano, B. Plöckl, G. Plunk, P. Pölöskei, B. Pompe, A. Popov, M. Porkolab, J. Proll, M.J. Pueschel, M.-E. Puiatti, A. Puig Sitjes, F. Purps, K. Rahbarnia, M. Rasiński, J. Rasmussen, A. Reiman, F. Reimold, M. Reisner, D. Reiter, M. Richou, R. Riedl, J. Riemann, K. Riße, G. Roberg-Clark, V. Rohde, J. Romazanov, D. Rondeshagen, P. Rong, L. Rudischhauser, T. Rummel, K. Rummel, A. Runov, N. Rust, L. Ryc, P. Salembier, M. Salewski, E. Sanchez, S. Satake, G. Satheeswaran, J. Schacht, E. Scharff, F. Schauer, J. Schilling, G. Schlisio, K. Schmid, J. Schmitt, O. Schmitz, W. Schneider, M. Schneider, P. Schneider, R. Schrittwieser, T. Schröder, M. Schröder, R. Schroeder, B. Schweer, D. Schwörer, E. Scott, B. Shanahan, G. Sias, P. Sichta, M. Singer, P. Sinha, S. Sipliä, C. Slaby, M. Sleczka, H. Smith, J. Smoniewski, E. Sonnendrücker, M. Spolaore, A. Spring, R. Stadler, D. Stańczak, T. Stange, I. Stepanov, L. Stephey, J. Stober, U. Stroth, E. Strumberger, C. Suzuki, Y. Suzuki, J. Svensson, T. Szabolics, T. Szepesi, M. Szücs, F.L. Tabarés, N. Tamura, A. Tancetti, C. Tantos, J. Terry, H. Thienpondt, H. Thomsen, M. Thumm, J.M. Travere, P. Traverso, J. Tretter, E. Trier, H. Trimino Mora, T. Tsujimura, Y. Turkin, A. Tykhyi, B. Unterberg, P. van Eeten, B.Ph. van Milligen, M. van Schoor, L. Vano, S. Varoutis, M. Vecsei, L. Vela, J.L. Velasco, M. Vervier, N. Vianello, H. Viebke, R. Vilbrandt, G. Vogel, N. Vogt, C. Volkhausen, A. von Stechow, F. Wagner, E. Wang, H. Wang, F. Warmer, T. Wauters, L. Wegener, T. Wegner, G. Weir, U. Wenzel, A. White, F. Wilde, F. Wilms, T. Windisch, M. Winkler, A. Winter, V. Winters, R. Wolf, A.M. Wright, G.A. Wurden, P. Xanthopoulos, S. Xu, H. Yamada, H. Yamaguchi, M. Yokoyama, M. Yoshinuma, Q. Yu, M. Zamanov, M. Zanini, M. Zarnstorff, D. Zhang, S. Zhou, J. Zhu, C. Zhu, M. Zilker, A. Zocco, H. Zohm, S. Zoletnik, L. Zsuga, Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. GPI - Grup de Processament d'Imatge i Vídeo, Universitat Politècnica de Catalunya. GREO - Grup de Recerca en Enginyeria Òptica, Pedersen, T, Abramovic, I, Agostinetti, P, Torres, M, Akaslompolo, S, Belloso, J, Aleynikov, P, Aleynikova, K, Alhashimi, M, Ali, A, Allen, N, Alonso, A, Anda, G, Andreeva, T, Angioni, C, Arkhipov, A, Arnold, A, Asad, W, Ascasibar, E, Aumeunier, M, Avramidis, K, Aymerich, E, Baek, S, Bahner, J, Baillod, A, Balden, M, Baldzuhn, J, Ballinger, S, Banduch, M, Bannmann, S, Navarro, A, Barbui, T, Beidler, C, Belafdil, C, Bencze, A, Benndorf, A, Beurskens, M, Biedermann, C, Biletskyi, O, Blackwell, B, Blatzheim, M, Bluhm, T, Bockenhoff, D, Bongiovi, G, Borchardt, M, Borodin, D, Boscary, J, Bosch, H, Bosmann, T, Boswirth, B, Bottger, L, Bottino, A, Bozhenkov, S, Brakel, R, Brandt, C, Brauer, T, Braune, H, Brezinsek, S, Brunner, K, Buller, S, Burhenn, R, Bussiahn, R, Buttenschon, B, Buzas, A, Bykov, V, Calvo, I, Mata, K, Caminal, I, Cannas, B, Cappa, A, Carls, A, Carovani, F, Carr, M, Carralero, D, Carvalho, B, Casas, J, Castano-Bardawil, D, Castejon, F, Chaudhary, N, Chelis, I, Chomiczewska, A, Coenen, J, Cole, M, Cordella, F, Corre, Y, Crombe, K, Cseh, G, Csillag, B, Damm, H, Day, C, de Baar, M, De la Cal, E, Degenkolbe, S, Demby, A, Denk, S, Dhard, C, Di Siena, A, Dinklage, A, Dittmar, T, Dreval, M, Drevlak, M, Drewelow, P, Drews, P, Dunai, D, Edlund, E, Effenberg, F, Ehrke, G, Endler, M, Ennis, D, Escoto, F, Estrada, T, Fable, E, Fahrenkamp, N, Fanni, A, Faustin, J, Fellinger, J, Feng, Y, Figacz, W, Flom, E, Ford, O, Fornal, T, Frerichs, H, Freundt, S, Fuchert, G, Fukuyama, M, Fullenbach, F, Gantenbein, G, Gao, Y, Garcia, K, Regana, J, Garcia-Cortes, I, Gaspar, J, Gates, D, Geiger, J, Geiger, B, Giudicotti, L, Gonzalez, A, Goriaev, A, Gradic, D, Grahl, M, Graves, J, Green, J, Grelier, E, Greuner, H, Gross, S, Grote, H, Groth, M, Gruca, M, Grulke, O, Grun, M, Arnaiz, J, Gunter, S, Haak, V, Haas, M, Hacker, P, Hakola, A, Hallenbert, A, Hammond, K, Han, X, Hansen, S, Harris, J, Hartfuss, H, Hartmann, D, Hathiramani, D, Hatzky, R, Hawke, J, Hegedus, S, Hein, B, Heinemann, B, Helander, P, Henneberg, S, Hergenhahn, U, Hidalgo, C, Hindenlang, F, Hirsch, M, Hofel, U, Hollfeld, K, Holtz, A, Hopf, D, Hoschen, D, Houry, M, Howard, J, Huang, X, Hubeny, M, Hudson, S, Ida, K, Igitkhanov, Y, Igochine, V, Illy, S, Ionita-Schrittwieser, C, Isobe, M, Jablczynska, M, Jablonski, S, Jagielski, B, Jakubowski, M, van Vuuren, A, Jelonnek, J, Jenko, F, Jensen, T, Jenzsch, H, Junghanns, P, Kaczmarczyk, J, Kallmeyer, J, Kamionka, U, Kandler, M, Kasilov, S, Kazakov, Y, Kennedy, D, Kharwandikar, A, Khokhlov, M, Kiefer, C, Killer, C, Kirschner, A, Kleiber, R, Klinger, T, Klose, S, Knauer, J, Knieps, A, Kochl, F, Kocsis, G, Kolesnichenko, Y, Konies, A, Konig, R, Kontula, J, Kornejew, P, Koschinsky, J, Kozulia, M, Kramer-Flecken, A, Krampitz, R, Krause, M, Krawczyk, N, Kremeyer, T, Krier, L, Kriete, D, Krychowiak, M, Ksiazek, I, Kubkowska, M, Kuczynski, M, Kuhner, G, Kumar, A, Kurki-Suonio, T, Kwak, S, Landreman, M, Lang, P, Langenberg, A, Laqua, H, Laube, R, Lazerson, S, Lewerentz, M, Li, C, Liang, Y, Linsmeier, C, Lion, J, Litnovsky, A, Liu, S, Lobsien, J, Loizu, J, Lore, J, Lorenz, A, Losada, U, Louche, F, Lunsford, R, Lutsenko, V, Machielsen, M, Mackel, F, Maisano-Brown, J, Maj, O, Makowski, D, Manduchi, G, Maragkoudakis, E, Marchuk, O, Marsen, S, Martines, E, Martinez-Fernandez, J, Marushchenko, M, Masuzaki, S, Maurer, D, Mayer, M, Mccarthy, K, Mccormack, O, Mcneely, P, Meister, H, Mendelevitch, B, Mendes, S, Merlo, A, Messian, A, Mielczarek, A, Mishchenko, O, Missal, B, Mitteau, R, Moiseenko, V, Mollen, A, Moncada, V, Monnich, T, Morisaki, T, Moseev, D, Motojima, G, Mulas, S, Mulsow, M, Nagel, M, Naujoks, D, Naulin, V, Neelis, T, Neilson, H, Neu, R, Neubauer, O, Neuner, U, Nicolai, D, Nielsen, S, Niemann, H, Nishiza, T, Nishizawa, T, Nuhrenberg, C, Ochoukov, R, Oelmann, J, Offermanns, G, Ogawa, K, Okamura, S, Olmanns, J, Ongena, J, Oosterbeek, J, Otte, M, Pablant, N, Alvarez, N, Pandey, A, Pasch, E, Pavlichenko, R, Pavone, A, Pawelec, E, Pechstein, G, Pelka, G, Perseo, V, Peterson, B, Pilopp, D, Pingel, S, Pisano, F, Plockl, B, Plunk, G, Poloskei, P, Pompe, B, Popov, A, Porkolab, M, Proll, J, Pueschel, M, Puiatti, M, Sitjes, A, Purps, F, Rahbarnia, K, Rasinski, M, Rasmussen, J, Reiman, A, Reimold, F, Reisner, M, Reiter, D, Richou, M, Riedl, R, Riemann, J, Risse, K, Roberg-Clark, G, Rohde, V, Romazanov, J, Rondeshagen, D, Rong, P, Rudischhauser, L, Rummel, T, Rummel, K, Runov, A, Rust, N, Ryc, L, Salembier, P, Salewski, M, Sanchez, E, Satake, S, Satheeswaran, G, Schacht, J, Scharff, E, Schauer, F, Schilling, J, Schlisio, G, Schmid, K, Schmitt, J, Schmitz, O, Schneider, W, Schneider, M, Schneider, P, Schrittwieser, R, Schroder, T, Schroder, M, Schroeder, R, Schweer, B, Schworer, D, Scott, E, Shanahan, B, Sias, G, Sichta, P, Singer, M, Sinha, P, Siplia, S, Slaby, C, Sleczka, M, Smith, H, Smoniewski, J, Sonnendrucker, E, Spolaore, M, Spring, A, Stadler, R, Stanczak, D, Stange, T, Stepanov, I, Stephey, L, Stober, J, Stroth, U, Strumberger, E, Suzuki, C, Suzuki, Y, Svensson, J, Szabolics, T, Szepesi, T, Szucs, M, Tabares, F, Tamura, N, Tancetti, A, Tantos, C, Terry, J, Thienpondt, H, Thomsen, H, Thumm, M, Travere, J, Traverso, P, Tretter, J, Trier, E, Mora, H, Tsujimura, T, Turkin, Y, Tykhyi, A, Unterberg, B, van Eeten, P, van Milligen, B, van Schoor, M, Vano, L, Varoutis, S, Vecsei, M, Vela, L, Velasco, J, Vervier, M, Vianello, N, Viebke, H, Vilbrandt, R, Vogel, G, Vogt, N, Volkhausen, C, von Stechow, A, Wagner, F, Wang, E, Wang, H, Warmer, F, Wauters, T, Wegener, L, Wegner, T, Weir, G, Wenzel, U, White, A, Wilde, F, Wilms, F, Windisch, T, Winkler, M, Winter, A, Winters, V, Wolf, R, Wright, A, Wurden, G, Xanthopoulos, P, Xu, S, Yamada, H, Yamaguchi, H, Yokoyama, M, Yoshinuma, M, Yu, Q, Zamanov, M, Zanini, M, Zarnstorff, M, Zhang, D, Zhou, S, Zhu, J, Zhu, C, Zilker, M, Zocco, A, Zohm, H, Zoletnik, S, Zsuga, L, Fusion and Plasma Physics, Department of Applied Physics, National Institute for Fusion Science, Aalto-yliopisto, Aalto University, Science and Technology of Nuclear Fusion, Group Heemels, Control Systems Technology, and Turbulence in Fusion Plasmas
Subjects: Magnetic confinement, Nuclear and High Energy Physics, Technology, Materials science, Detachment, Nuclear engineering, Física::Física de partícules [Àrees temàtiques de la UPC], Imatges -- Processament, stellarator, Divertor, Image processing, Physics::Plasma Physics, divertor, Wendelstein 7-X, ddc:530, FIS/03 - FISICA DELLA MATERIA, Neoclassical optimization, Stellarators, Reactors de fusió, magnetic confinement, Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo [Àrees temàtiques de la UPC], Condensed Matter Physics, ddc, Fusion reactors, Physics and Astronomy, detachment, neoclassical optimization, ddc:620, ddc:600, Paper, FEC 2020 Summaries and Overviews
Abstract: We present recent highlights from the most recent operation phases of Wendelstein 7-X, the most advanced stellarator in the world. Stable detachment with good particle exhaust, low impurity content, and energy confinement times exceeding 100 ms, have been maintained for tens of seconds. Pellet fueling allows for plasma phases with reduced ion-temperature-gradient turbulence, and during such phases, the overall confinement is so good (energy confinement times often exceeding 200 ms) that the attained density and temperature profiles would not have been possible in less optimized devices, since they would have had neoclassical transport losses exceeding the heating applied in W7-X. This provides proof that the reduction of neoclassical transport through magnetic field optimization is successful. W7-X plasmas generally show good impurity screening and high plasma purity, but there is evidence of longer impurity confinement times during turbulence-suppressed phases. This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 and 2019-2020 under Grant Agreement No. 633053. Peer Reviewed Article signat per 497 autors/es: Thomas Sunn Pedersen1,2,∗ , I. Abramovic3, P. Agostinetti4, M. Agredano Torres1, S. Äkäslompolo1, J. Alcuson Belloso1, P. Aleynikov1, K. Aleynikova1, M. Alhashimi1, A. Ali1, N. Allen5, A. Alonso6, G. Anda7, T. Andreeva1, C. Angioni8, A. Arkhipov8, A. Arnold1, W. Asad8, E. Ascasibar6, M.-H. Aumeunier9, K. Avramidis10, E. Aymerich11, S.-G. Baek3, J. Bähner1, A. Baillod12, M. Balden1, M. Balden8, J. Baldzuhn1, S. Ballinger3, M. Banduch1, S. Bannmann1, A. Banon Navarro8, A. Bañon Navarro ´ 1, T. Barbui13, C. Beidler1, C. Belafdil9, A. Bencze7, A. Benndorf1, M. Beurskens1, C. Biedermann1, O. Biletskyi14, B. Blackwell15, M. Blatzheim1, T. Bluhm1, D. Böckenhoff1, G. Bongiovi16, M. Borchardt1, D. Borodin17, J. Boscary8, H. Bosch1,18, T. Bosmann19, B. Böswirth8, L. Böttger1, A. Bottino8, S. Bozhenkov1, R. Brakel1, C. Brandt1, T. Bräuer1, H. Braune1, S. Brezinsek17, K. Brunner1, S. Buller1, R. Burhenn1, R. Bussiahn1, B. Buttenschön1, A. Buzás7, V. Bykov1, I. Calvo6, K. Camacho Mata1, I. Caminal20, B. Cannas11, A. Cappa6, A. Carls1, F. Carovani1, M. Carr21, D. Carralero6, B. Carvalho22, J. Casas20, D. Castano-Bardawil17, F. Castejon6, N. Chaudhary1, I. Chelis23, A. Chomiczewska24, J.W. Coenen13,17, M. Cole1, F. Cordella25, Y. Corre9, K. Crombe26, G. Cseh7, B. Csillag7, H. Damm1, C. Day10, M. de Baar27, E. De la Cal6, S. Degenkolbe1, A. Demby13, S. Denk3, C. Dhard1, A. Di Siena8,28, A. Dinklage12, T. Dittmar17, M. Dreval14, M. Drevlak1, P. Drewelow1, P. Drews17, D. Dunai7, E. Edlund3, F. Effenberg29, G. Ehrke1, M. Endler1, D.A. Ennis5, F.J. Escoto6, T. Estrada6, E. Fable8, N. Fahrenkamp1, A. Fanni11, J. Faustin1, J. Fellinger1, Y. Feng1, W. Figacz4, E. Flom13, O. Ford1, T. Fornal24, H. Frerichs13, S. Freundt1, G. Fuchert1, M. Fukuyama30, F. Füllenbach1, G. Gantenbein10, Y. Gao1, K. Garcia13, J.M. García Regaña6, I. García-Cortés6, J. Gaspar31, D.A. Gates29, J. Geiger1, B. Geiger13, L. Giudicotti32, A. González6, A. Goriaev26,33, D. Gradic1, M. Grahl1, J.P. Graves12, J. Green13, E. Grelier9, H. Greuner8, S. Groß1, H. Grote1, M. Groth34, M. Gruca24, O. Grulke1,35, M. Grün1, J. Guerrero Arnaiz1, S. Günter8, V. Haak1, M. Haas1, P. Hacker1, A. Hakola36, A. Hallenbert1, K. Hammond29, X. Han17,37, S.K. Hansen3, J.H. Harris38, H. Hartfuß1, D. Hartmann1, D. Hathiramani1, R. Hatzky8, J. Hawke39, S. Hegedus7, B. Hein8, B. Heinemann8, P. Helander12, S. Henneberg1, U. Hergenhahn8,40, C. Hidalgo6, F. Hindenlang8, M. Hirsch1, U. Höfel1, K.P. Hollfeld17, A. Holtz1, D. Hopf8, D. Höschen17, M. Houry9, J. Howard19, X. Huang41, M. Hubeny17, S. Hudson29, K. Ida9, Y. Igitkhanov10, V. Igochine8, S. Illy10, C. Ionita-Schrittwieser42, M. Isobe39, M. Jabłczynska ´ 24, S. Jablonski24, B. Jagielski1, M. Jakubowski1, A. 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Stadler8, D. Stanczak24, T. Stange1, I. Stepanov26, L. Stephey13, J. Stober8, U. Stroth8,55, E. Strumberger8, C. Suzuki41, Y. Suzuki41, J. Svensson1, T. Szabolics7, T. Szepesi7, M. Szücs7, F.L. Tabares6, N. Tamura41, A. Tancetti35, C. Tantos10, J. Terry3, H. Thienpondt6, H. Thomsen1, M. Thumm10, J.M. Travere9, P. Traverso5, J. Tretter8, E. Trier8, H. Trimino Mora1, T. Tsujimura41, Y. Turkin1, A. Tykhyi45, B. Unterberg17, P. van Eeten1, B.Ph. van Milligen6, M. van Schoor26, L. Vano1, S. Varoutis10, M. Vecsei7, L. Vela56, J.L. Velasco6, M. Vervier17, N. Vianello50, H. Viebke1, R. Vilbrandt1, G. Vogel8, N. Vogt1, C. Volkhausen1, A. von Stechow1, F. Wagner1, E. Wang17, H. Wang57, F. Warmer1, T. Wauters26, L. Wegener1, T. Wegner1, G. Weir1, U. Wenzel1, A. White3, F. Wilde1, F. Wilms1, T. Windisch1, M. Winkler1, A. Winter1, V. Winters1, R. Wolf118, A.M. Wright29, G.A. Wurden39, P. Xanthopoulos1, S. Xu17, H. Yamada58, H. Yamaguchi41, M. Yokoyama41, M. Yoshinuma41, Q. Yu8, M. Zamanov14, M. Zanini1, M. Zarnstorff29, D. Zhang1, S. Zhou17, J. Zhu1, C. Zhu29, M. Zilker8, A. Zocco1, H. Zohm8, S. Zoletnik7 and L. Zsuga7 // 1 Max Planck Institute for Plasma Physics, Garching and Greifswald, Germany: 2 University of Greifswald, Greifswald, Germany; 3 Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, United States of America; 4 Consorzio RFX, Corso Stati Uniti, 4-35127 Padova, Italy; 5 Auburn University, Auburn, AL 36849, United States of America; 6 CIEMAT, Avenida Complutense, 40, 28040 Madrid, Spain; 7 Center for Energy Research, Konkoly-Thegeut 29-33, 1121 Budapest, Hungary; 8 Max-Planck-Institute for Plasma Physics, Boltzmannstraße 2, 85748 Garching bei München, Germany; 9 CEA Cadarache, 13115 Saint-Paul-lez-Durance, France; 10 Karlsruhe Institute of Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany; 11 University of Cagliari, Via Universita, 40, 09124 Cagliari, Italy; 12 École Polytechnique Fédérale de Lausanne, Swiss Plasma Center, CH-1015 Lausanne, Switzerland; 13 University of Wisconsin–Madison, Engineering Drive, Madison, WI 53706, United States of America; 14 Institute of Plasma Physics, National Science Center ‘Kharkiv Institute of Physics and Technology’, Kharkiv, Ukraine; 15 The Australian National University, Acton ACT 2601, Canberra, Australia; 16 Department of Engineering, University of Palermo, Viale delle Scienze, Edificio 6, Palermo, 90128, Italy; 17 Forschungszentrum Jülich GmbH, Institut für Energie-und Klimaforschung—Plasmaphysik, 52425 Jülich, Germany; 18 Technical University of Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany; 19 Eindhoven University of Technology, 5600 MB Eindhoven, Netherlands; 20 Universitat Politècnica de Catalunya. BarcelonaTech, C. Jordi Girona, 31, 08034 Barcelona, Spain; 21 Culham Center for Fusion Energy, Abingdon OX14 3EB, United Kingdom; 22 Instituto de Plasmas e Fusao Nuclear, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; 23 Department of Physics, National and Kapodistrian University of Athens, 15784 Athens, Greece; 24 Institute of Plasma Physics and Laser Microfusion, 23 Hery Str., 01-497 Warsaw, Poland; 25 ENEA—Centro Ricerche Frascati, Via Enrico Fermi, 45, 00044 Frascati RM, Italy; 26 Laboratory for Plasma Physics, LPP-ERM/KMS, TEC Partner, B-1000 Brussels, Belgium; 27 Dutch Institute for Fundamental Energy Research, PO Box 6336, 5600 HH Eindhoven, Netherlands; 28 University of Texas, Austin, TX, United States of America; 29 Princeton Plasma Physics Laboratory, Princeton, NJ 08543, United States of America; 30 Kyushu University, 744 Motooka Nishi-ku, Fukuoka 819-0395, Japan; 31 Aix-Marseille University, Jardin du Pharo, 58 Boulevard Charles Livon, 13007, Marseille, France; 32 Department of Physics and Astronomy, Padova University, Via Marzolo 8, 35131 Padova, Italy; 33 Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium; 34 Aalto University, 02150 Espoo, Finland; 35 Department of Physics, Technical University of Denmark, Anker Engelunds Vej, 2800 Kgs Lyngby, Denmark; 36 VTT Technical Research Center of Finland Ltd., PO Box 1000, FI-02044 VTT, Finland; 37 Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, Anhui, China; 38 Oak Ridge National Laboratory, 1 Bethel Valley Rd, Oak Ridge, TN 37830, United States of America; 39 Los Alamos National Laboratory, NM 87545, United States of America; 40 Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany; 41 National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki, Gifu Prefecture 509-5292, Japan; 42 Institute for Ion Physics and Applied Physics, University of Innsbruck, Innsbruck, Austria; 43 Graz University of Technology, Rechbauerstraße 12, 8010 GRAZ, Austria; 44 Austrian Academy of Science, Doktor-Ignaz-Seipel-Platz 2, 1010 Wien, Austria; 45 Institute for Nuclear Research, prospekt Nauky 47, Kyiv 03028, Ukraine; 46 University of Opole, plac Kopernika 11a, 45-001 Opole, Poland; 47 University of Maryland, Paint Branch Drive, College Park, MA 20742, United States of America; 48 National Research Nuclear University MEPhI, 115409 Moscow, Russian Federation; 49 Department of Microelectronics and Computer Science, Lodz University of Technology, Wolczanska 221/223, 90-924 Lodz, Poland; 50 Consiglio Nazionale delle Ricerche, Piazzale Aldo Moro, 7, 00185 Roma, Italy; 51 Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 26 Politekhnicheskaya, St Petersburg 194021, Russian Federation; 52 Istituto di Fisica del Plasma Piero Caldirola, Via Roberto Cozzi, 53, 20125 Milano, Italy; 53 University of Szczecin, 70-453, aleja Papieza Jana Pawła II 22A, Szczecin, Poland; 54 Lawrence University, 711 E Boldt Way, Appleton, WI 54911, United States of America; 55 Physik-Department E28, Technische Universität München, 85747 Garching, Germany; 56 Universidad Carlos III de Madrid, Av. de la Universidad, 30 Madrid, Spain; 57 Yale University, New Haven, CT 06520, United States of America; 58 University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chhiab 277-0882, Japan Objectius de Desenvolupament Sostenible::7 - Energia Assequible i No Contaminant Objectius de Desenvolupament Sostenible::7 - Energia Assequible i No Contaminant::7.a - Per a 2030, augmentar la cooperació internacional per tal de facilitar l’accés a la investigació i a les tecnologies energètiques no contaminants, incloses les fonts d’energia renovables, l’eficiència energètica i les tecnologies de combustibles fòssils avançades i menys contaminants, i promoure la inversió en infraestructures energètiques i tecnologies d’energia no contaminant
Published: 2022
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21. DIII-D research towards establishing the scientific basis for future fusion reactors

Author: L. Abadie, T. W. Abrams, J. Ahn, T. Akiyama, P. Aleynikov, J. Allcock, E. O. Allen, S. Allen, J. P. Anderson, A. Ashourvan, M. E. Austin, J. Bak, K. K. Barada, N. Barbour, L. Bardoczi, J. Barr, J. L. Barton, E. M. Bass, D. Battaglia, L. R. Baylor, J. Beckers, E. A. Belli, J. W. Berkery, N. Bertelli, J. M. Bialek, J. A. Boedo, R. L. Boivin, P. T. Bonoli, A. Bortolon, M. D. Boyer, R. E. Brambila, B. Bray, D. P. Brennan, A. R. Briesemeister, S. A. Bringuier, M. W. Brookman, D. L. Brower, B. R. Brown, W. D. Brown, D. Buchenauer, M. G. Burke, K. H. Burrell, J. Butt, R. J. Buttery, I. Bykov, J. M. Candy, J. M. Canik, N. M. Cao, L. Carbajal Gomez, L. C. Carlson, T. N. Carlstrom, T. A. Carter, W. Cary, L. Casali, M. Cengher, V. S. Chan, B. Chen, J. Chen, M. Chen, R. Chen, Xi Chen, W. Choi, C. Chrobak, C. Chrystal, R. M. Churchill, M. Cianciosa, C. F. Clauser, M. Clement, J. Coburn, C. S. Collins, A. W. Cooper, B. M. Covele, J. W. Crippen, N. A. Crocker, B. J. Crowley, A. Dal Molin, E. M. Davis, J. S. deGrassie, C. A. del-Castillo-Negrete, L. F. Delgado-Aparicio, A. Diallo, S. J. Diem, R. Ding, S. Ding, W. Ding, J. L. Doane, D. C. Donovan, J. Drake, D. Du, H. Du, X. Du, V. Duarte, J. D. Duran, N. W. Eidietis, D. Elder, D. Eldon, W. Elwasif, T. E. Ely, K. M. Eng, K. Engelhorn, D. Ennis, K. Erickson, D. R. Ernst, T. E. Evans, M. E. Fenstermacher, N. M. Ferraro, J. R. Ferron, D. F. Finkenthal, P. A. Fisher, B. Fishler, S. M. Flanagan, J. A. Fooks, L. Frassinetti, H. G. Frerichs, Y. Fu, T. Fulop, Q. Gao, F. Garcia, A. M. Garofalo, A. Gattuso, L. Giacomelli, E. M. Giraldez, C. Giroud, F. Glass, P. Gohil, X. Gong, Y. A. Gorelov, R. S. Granetz, D. L. Green, C. M. Greenfield, B. A. Grierson, R. J. Groebner, W. H. Grosnickle, M. Groth, H. J. Grunloh, H. Y. Guo, W. Guo, J. Guterl, R. C. Hager, S. Hahn, F. D. Halpern, H. Han, M. J. Hansink, J. M. Hanson, J. Harris, S. R. Haskey, D. R. Hatch, W. W. Heidbrink, J. Herfindal, D. N. Hill, M. D. Hill, E. T. Hinson, C. T. Holcomb, C. 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Izzo, V, Jackson, M, Jarvinen, A, Jeon, Y, Ji, H, Jian, X, Jimenez, R, Johnson, C, Joseph, I, Kaczala, D, Kaplan, D, Kates-Harbeck, J, Kellman, A, Kellman, D, Kessel, C, Khumthong, K, Kim, C, Kim, H, Kim, J, Kim, K, Kim, S, Kimura, W, King, J, Kirk, A, Kleijwegt, K, Knolker, M, Kohn, A, Kolemen, E, Kostuk, M, Kramer, G, Kress, P, Kriete, D, La Haye, R, Laggner, F, Lan, H, Lanctot, M, Lantsov, R, Lao, L, Lasnier, C, Lau, C, Law, K, Lawrence, D, Le, J, Lee, R, Lehnen, M, Leon, R, Leonard, A, Lesher, M, Leuer, J, Li, G, Li, K, Liao, K, Lin, Z, Liu, C, Liu, F, Liu, Y, Liu, Z, Loch, S, Logan, N, Lohr, J, Lore, J, Luce, T, Luhmann, N, Lunsford, R, Luo, C, Luo, Z, Lupin-Jimenez, L, Lvovskiy, A, Lyons, B, Ma, X, Maingi, R, Makowski, M, Mantica, P, Manuel, M, Margo, M, Marinoni, A, Marmar, E, Martin, W, Masline, R, Matsunaga, G, Mauzey, D, Mauzey, P, Mcclenaghan, J, Mckee, G, Mclean, A, Mclean, H, Meier, E, Meitner, S, Menard, J, Meneghini, O, Merlo, G, Meyer, W, Miller, D, Miller, W, Moeller, C, Montes, K, Morales, M, Mordijck, S, Moser, A, Moyer, R, Muller, S, Munaretto, S, Murakami, M, Murphy, C, Muscatello, C, Myers, C, Nagy, A, Navratil, G, Nazikian, R, Neff, A, Neiser, T, Nelson, A, Nguyen, P, Nguyen, R, Nichols, J, Nocente, M, Nygren, R, O'Neill, R, Odstrcil, T, Ohdachi, S, Okabayashi, M, Olofsson, E, Ono, M, Orlov, D, Osborne, T, Pablant, N, Pace, D, Paguio, R, Pajares Martinez, A, Pan, C, Pankin, A, Park, J, Park, Y, Parker, C, Parker, S, Parks, P, Pawley, C, Paz-Soldan, C, Peebles, W, Penaflor, B, Petrie, T, Petty, C, Peysson, Y, Pigarov, A, Piglowski, D, Pinsker, R, Piovesan, P, Piper, N, Pitts, R, Pizzo, J, Podesta, M, Poli, F, Ponce, D, Porkolab, M, Porter, G, Prater, R, Qian, J, Ra, O, Rafiq, T, Raman, R, Rand, C, Randall, G, Rauch, J, Rea, C, Reinke, M, Ren, J, Ren, Q, Ren, Y, Rhodes, T, Rice, J, Rognlien, T, Rost, J, Rowan, W, Rudakov, D, Salmi, A, Sammuli, B, Samuell, C, Sandorfi, A, Sang, C, Sauter, O, Schissel, D, Schmitz, L, Schmitz, O, Schuster, E, Scoville, J, Seltzman, A, Sfiligoi, I, Shafer, M, Shen, H, Shi, T, Shiraki, D, Si, H, Smith, D, Smith, S, Snipes, J, Snyder, P, Solano, E, Solomon, W, Sontag, A, Soukhanovskii, V, Spong, D, Stacey, W, Staebler, G, Stagner, L, Stahl, B, Stangeby, P, Stoltzfus-Dueck, T, Stotler, D, Strait, E, Su, D, Sugiyama, L, Sulyman, A, Sun, Y, Sung, C, Suttrop, W, Suzuki, Y, Svyatkovskiy, A, Sweeney, R, Taimourzadeh, S, Takechi, M, Tala, T, Tan, H, Tang, S, Tang, X, Taussig, D, Taylor, G, Taylor, N, Taylor, T, Teklu, A, Thomas, D, Thomas, M, Thome, K, Thorman, A, Tinguely, R, Tobias, B, Tooker, J, Torreblanca, H, Torrezan De Sousa, A, Trevisan, G, Truong, D, Turco, F, Turnbull, A, Unterberg, E, Vaezi, P, Vail, P, Van Zeeland, M, Velasco Enriquez, M, Venkatesh, M, Victor, B, Volpe, F, Wade, M, Walker, M, Wall, J, Wallace, G, Waltz, R, Wang, G, Wang, H, Wang, Y, Wang, Z, Wang, F, Ward, S, Watkins, J, Watkins, M, Wehner, W, Weiland, M, Weisberg, D, Welander, A, White, A, White, R, Whyte, D, Wijkamp, T, Wilcox, R, Wilks, T, Wilson, H, Wingen, A, Wolfe, E, Wu, M, Wu, W, Wukitch, S, Xia, T, Xiang, N, Xiao, B, Xie, R, Xu, G, Xu, H, Xu, X, Yan, Z, Yang, Q, Yang, X, Yoshida, M, Yu, G, Yu, J, Yu, M, Zamperini, S, Zeng, L, Zhao, B, Zhao, D, Zhao, H, Zhao, Y, Zhu, Y, and Zywicki, B
Subjects: Physics, Nuclear and High Energy Physics, fusion, model, Tokamak, DIII-D, Divertor, Mechanics, Plasma, Fusion power, Dissipation, Condensed Matter Physics, 01 natural sciences, 010305 fluids & plasmas, law.invention, Pedestal, Heat flux, law, Physics::Plasma Physics, 0103 physical sciences, 010306 general physics, tokamak, plasma, energy
Abstract: DIII-D research is addressing critical challenges in preparation for ITER and the next generation of fusion devices through focusing on plasma physics fundamentals that underpin key fusion goals, understanding the interaction of disparate core and boundary plasma physics, and developing integrated scenarios for achieving high performance fusion regimes. Fundamental investigations into fusion energy science find that anomalous dissipation of runaway electrons (RE) that arise following a disruption is likely due to interactions with RE-driven kinetic instabilities, some of which have been directly observed, opening a new avenue for RE energy dissipation using naturally excited waves. Dimensionless parameter scaling of intrinsic rotation and gyrokinetic simulations give a predicted ITER rotation profile with significant turbulence stabilization. Coherence imaging spectroscopy confirms near sonic flow throughout the divertor towards the target, which may account for the convection-dominated parallel heat flux. Core-boundary integration studies show that the small angle slot divertor achieves detachment at lower density and extends plasma cooling across the divertor target plate, which is essential for controlling heat flux and erosion. The Super H-mode regime has been extended to high plasma current (2.0 MA) and density to achieve very high pedestal pressures (~30 kPa) and stored energy (3.2 MJ) with H 98y2 ≈ 1.6–2.4. In scenario work, the ITER baseline Q = 10 scenario with zero injected torque is found to have a fusion gain metric independent of current between q 95 = 2.8–3.7, and a lower limit of pedestal rotation for RMP ELM suppression has been found. In the wide pedestal QH-mode regime that exhibits improved performance and no ELMs, the start-up counter torque has been eliminated so that the entire discharge uses ≈0 injected torque and the operating space is more ITER-relevant. Finally, the high- (⩽3.8) hybrid scenario has been extended to the high-density levels necessary for radiating divertor operation, achieving ~40% divertor heat flux reduction using either argon or neon with P tot up to 15 MW.
Published: 2019

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21 results on '"Kriete, D."'

1. Flexible Stellarator Physics Facility

2. Observation of a drift-driven local transport regime in the island divertor of Wendelstein 7-X

3. Effect of magnetic perturbations on turbulence-flow dynamics at the L-H transition on DIII-D

4. Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X

5. Effects of drifts on scrape-off layer transport in W7-X

6. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

7. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

8. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

9. Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X

10. Radial coordinate maps, radial vectors, and binormal vectors for 5/6, 5/5 and 5/4 edge island domains in W7-X

11. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

12. Characterizing the flow and turbulence structure near the last closed flux surface in L-mode plasmas of ASDEX Upgrade

13. 2D measurements of parallel counter-streaming flows in the W7-X scrape-off layer for attached and detached plasmas

14. 2D coherence imaging measurements of C ion temperatures in the divertor of Wendelstein 7-X

15. Effect of magnetic perturbations on turbulence-flow dynamics at the L-H transition on DIII-D

16. DIII-D research towards establishing the scientific basis for future fusion reactors

17. Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry

18. High Confinement Mode and Edge Localized Mode Characteristics in a Near-Unity Aspect Ratio Tokamak

19. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

20. Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X

21. DIII-D research towards establishing the scientific basis for future fusion reactors

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21 results on '"Kriete, D."'

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