Search

Your search keyword '"Mauzey, D."' showing total 8 results
Start Over Author "Mauzey, D." Language english
8 results on '"Mauzey, D."'

1. Upgrade of the Lyman-alpha diagnostic system on DIII-D for main chamber edge neutral studies.

Author

Horvath, L., Mauzey, D., Bortolon, A., Laggner, F. M., Nagy, A., Gerrú, R., Kennedy, J., Wilks, T. M., Hughes, J. W., Rosenthal, A. M., and Balbin-Arias, J.

Subjects
*PINHOLE cameras, *LLAMAS, *EMISSIVITY measurement, *ALPACA, *PLASMA boundary layers, *FUSION reactors
Abstract

The LLAMA (Lyman Alpha Measurement Apparatus) pinhole camera diagnostic had previously been deployed on DIII-D to measure radial profiles of the Lyman-α (Ly-α) deuterium neutral line brightness across the plasma boundary in the lower chamber to infer neutral deuterium density and ionization rate profiles. This system has recently been upgraded with a new diagnostic head, named ALPACA, that also encloses two pinhole cameras and duplicates the LLAMA views in the upper chamber. Similar to LLAMA, ALPACA provides two times 20 lines of sight, viewing the plasma edge on the inboard and outboard sides with a radial resolution of ∼ 2.5 cm (FWHM) and an effective time resolution of ∼ 1 ms that allows for the investigation of inter-ELM dynamics. The extended Ly-α system provides better coverage to study neutrals in experiments with various plasma shapes utilizing both the upper and lower divertors. Furthermore, post-campaign calibration of the LLAMA diagnostic has successfully been demonstrated for the first time. This was facilitated by various upgrades to the calibration set-up and detailed measurements of the emissivity distribution of the Ly-α calibration source using a pinhole collimator. It was found that the sensitivity of the inboard LLAMA pinhole camera was reduced by a factor of 2.0 ± 0.2 over the course of six months of plasma operation in 2021. The upgraded Ly-α system, equipped with improved absolute calibration, will provide key input for neutral fueling and pedestal particle transport studies and for 2D edge transport code validation on the DIII-D tokamak. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

3. A 1D Lyman-alpha profile camera for plasma edge neutral studies on the DIII-D tokamak.

Author

Rosenthal, A. M., Hughes, J. W., Bortolon, A., Laggner, F. M., Wilks, T. M., Vieira, R., Leccacorvi, R., Marmar, E., Nagy, A., Freeman, C., and Mauzey, D.

Subjects
PINHOLE cameras, SURFACE brightness (Astronomy), HYDROGEN isotopes, CAMERAS, PLASMA boundary layers, THREE-dimensional printing, PRODUCTION engineering
Abstract

A one dimensional, absolutely calibrated pinhole camera system was installed on the DIII-D tokamak to measure edge Lyman-alpha (Ly-α) emission from hydrogen isotopes, which can be used to infer neutral density and ionization rate profiles. The system is composed of two cameras, each providing a toroidal fan of 20 lines of sight, viewing the plasma edge on the inboard and outboard side of DIII-D. The cameras' views lie in a horizontal plane 77 cm below the midplane. At its tangency radius, each channel provides a radial resolution of ∼2 cm full width at half maximum (FWHM) with a total coverage of 22 cm. Each camera consists of a rectangular pinhole, Ly-α reflective mirror, narrow-band Ly-α transmission filter, and a 20 channel AXUV photodetector. The combined mirror and transmission filter have a FWHM of 5 nm, centered near the Ly-α wavelength of 121.6 nm and is capable of rejecting significant, parasitic carbon-III (C-III) emission from intrinsic plasma impurities. To provide a high spatial resolution measurement in a compact footprint, the camera utilizes advanced engineering and manufacturing techniques including 3D printing, high stability mirror mounts, and a novel alignment procedure. Absolutely calibrated, spatially resolved Ly-α brightness measurements utilize a bright, isolated line with low parasitic surface reflections and enable quantitative comparison to modeling to study divertor neutral leakage, main chamber fueling, and radial particle transport. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

4. Absolute calibration of the Lyman-α measurement apparatus at DIII-D.

Author

Laggner, F. M., Bortolon, A., Rosenthal, A. M., Wilks, T. M., Hughes, J. W., Freeman, C., Golfinopoulos, T., Nagy, A., Mauzey, D., and Shafer, M. W.

Subjects
CALIBRATION, PINHOLE cameras, ULTRAVIOLET detectors, OPTICAL detectors, ULTRAVIOLET spectrometers, BANDPASS filters
Abstract

The LLAMA (Lyman-Alpha Measurement Apparatus) diagnostic was recently installed on the DIII-D tokamak [Rosenthal et al., Rev. Sci. Instrum. (submitted) (2020)]. LLAMA is a pinhole camera system with a narrow band Bragg mirror, a bandpass interference filter, and an absolute extreme ultraviolet photodiode detector array, which measures the Ly-α brightness in the toroidal direction on the inboard, high field side (HFS) and outboard, low field side (LFS). This contribution presents a setup and a procedure for an absolute calibration near the Ly-α line at 121.6 nm. The LLAMA in-vacuum components are designed as a compact, transferable setup that can be mounted in an ex situ vacuum enclosure that is equipped with an absolutely calibrated Ly-α source. The spectral purity and stability of the Ly-α source are characterized using a vacuum ultraviolet spectrometer, while the Ly-α source brightness is measured by a NIST-calibrated photodiode. The non-uniform nature of the Ly-α source emission was overcome by performing a calibration procedure that scans the Ly-α source position and employs a numerical optimization to determine the emission pattern. Nominal and measured calibration factors are determined and compared, showing agreement within their uncertainties. A first conversion of the measured signal obtained from DIII-D indicates that the Ly-α brightness on the HFS and LFS is on the order of 1020 Ph sr−1 m−2 s−1. The established calibration setup and procedure will be regularly used to re-calibrate the LLAMA during DIII-D vents to monitor possible degradation of optical components and detectors. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

5. A Quasi-Periodic Linear Feeder for the Impurity Granular Injection on DIII-D.

Author

Nagy, Alex, Bortolon, A., Brown, W., Fisher, Peter, Lunsford, R., Maingi, R., Mansfield, D., Mauzey, D., Nguyen, R., and Vorenkamp, Madeline

Subjects
EDGE-localized modes (Plasma instabilities), FUSION reactor materials, NUCLEAR reactor material testing, INJECTORS, NUCLEAR reactors, PLASMA devices, EQUIPMENT & supplies
Abstract

Injection of solid nonfuel pellets has been actively used as a tool for pacing and mitigation of edge localized modes (ELMs). In DIII-D, effective ELM pacing has been demonstrated by the high-frequency injection of lithium and carbon submillimeter spheres, using the impurity granule injector (IGI). This device injects granules into the plasma at speeds up to 150 m/s, through impact with a rotating impeller. In the IGI, high-frequency granule delivery was accomplished through a vibrational granule dropper, in which high time-average rates are obtained at the cost of lack of period control. We present a new in-line granule feeder, capable of delivering granules of size 0.2–2 mm with no restriction of material properties, at quasi-periodic rates of up to 150 Hz, for 0.7-mm diameter lithium granules (600 Hz using 0.3-mm granules). The new dropper mechanism combines two piezo-in-line units; one which feeds the impeller and one which circulates granules that are filtered out of the feeder path. A remotely adjustable filter eliminates granules that are stacked, oversized, or side by side allowing the formation of a single moving granule injection line. The granules fall off the in-line feeder exit one at a time, achieving a quasi-periodic delivery rate proportional to the exit speed. At higher rates, the periodicity deteriorates. This behavior was studied using high-speed cameras and electrostatic measurements, and it was found that at drop rates <60 Hz, the granule delivery period has a variation of ±25% which appears to be caused by gaps which develop in the last centimeter of the injection line, as granules exit off the moving track. The linear feeder concept is robust against bridge instabilities and clogging issues, thanks to the simple diverter filter and constant recirculation of granules. Furthermore, the open-top design of the device facilitates refilling the device from separate reservoirs and has easy access for directly monitoring operation and adjustment. This paper describes the details of the in-line feeder design, along with several design iterations. The goal is a robust in-vacuum mechanism that can deliver granule flow ranging from a single particle to a line of particles at 150 per second, using different sizes and materials from the same apparatus. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

6. 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. Holland, E. Hollmann, J. Hollocombe, A. Holm, I. Holmes, K. Holtrop, M. Honda, R. Hong, R. Hood, A. Horton, L. Horvath, M. Hosokawa, S. Houshmandyar, N. Howard, E. Howell, D. Hoyt, W. Hu, Y. Hu, Q. Hu, J. Huang, Y. Huang, J. Hughes, T. Human, D. Humphreys, P. Huynh, A. Hyatt, C. Ibanez, L. Ibarra, R. Icasas, K. Ida, V. Igochine, Y. In, S. Inoue, A. Isayama, O. Izacard, V. Izzo, A. Jackson, G. Jacobsen, A. Jaervinen, A. Jalalvand, J. Janhunen, S. Jardin, H. Jarleblad, Y. Jeon, H. Ji, X. Jian, E. Joffrin, A. Johansen, C. Johnson, T. Johnson, C. Jones, I. Joseph, D. Jubas, B. Junge, W. Kalb, R. Kalling, C. Kamath, J. Kang, D. Kaplan, A. Kaptanoglu, S. Kasdorf, J. Kates-Harbeck, P. Kazantzidis, A. Kellman, D. Kellman, C. Kessel, K. Khumthong, E. Kim, H. Kim, J. Kim, S. Kim, K. Kim, C. Kim, W. Kimura, M. King, J. King, J. Kinsey, A. Kirk, B. Kiyan, A. Kleiner, V. Klevarova, R. Knapp, M. Knolker, W. Ko, T. Kobayashi, E. Koch, M. Kochan, B. Koel, M. Koepke, A. Kohn, R. Kolasinski, E. Kolemen, E. Kostadinova, M. Kostuk, G. Kramer, D. Kriete, L. Kripner, S. Kubota, J. Kulchar, K. Kwon, R. La Haye, F. Laggner, H. Lan, R. Lantsov, L. Lao, A. Lasa Esquisabel, C. Lasnier, C. Lau, B. Leard, J. Lee, R. Lee, M. Lee, Y. Lee, C. Lee, S. Lee, M. Lehnen, A. Leonard, E. Leppink, M. Lesher, J. Lestz, J. Leuer, N. Leuthold, X. Li, K. Li, E. Li, G. Li, L. Li, Z. Li, J. Li, Y. Li, Z. Lin, D. Lin, X. Liu, J. Liu, Y. Liu, T. Liu, C. Liu, Z. Liu, D. Liu, A. Liu, A. Loarte-Prieto, L. Lodestro, N. Logan, J. Lohr, B. Lombardo, J. Lore, Q. Luan, T. Luce, T. Luda Di Cortemiglia, N. Luhmann, R. Lunsford, Z. Luo, A. Lvovskiy, B. Lyons, X. Ma, M. Madruga, B. Madsen, C. Maggi, K. Maheshwari, A. Mail, J. Mailloux, R. Maingi, M. Major, M. Makowski, R. Manchanda, C. Marini, A. Marinoni, A. Maris, T. Markovic, L. Marrelli, E. Martin, J. Mateja, G. Matsunaga, R. Maurizio, P. Mauzey, D. Mauzey, G. Mcardle, J. Mcclenaghan, K. Mccollam, C. Mcdevitt, K. Mckay, G. Mckee, A. Mclean, V. Mehta, E. Meier, J. Menard, O. Meneghini, G. Merlo, S. Messer, W. Meyer, C. Michael, C. Michoski, P. Milne, G. Minet, A. Misleh, Y. Mitrishkin, C. Moeller, K. Montes, M. Morales, S. Mordijck, D. Moreau, S. Morosohk, P. Morris, L. Morton, A. Moser, R. Moyer, C. Moynihan, T. Mrazkova, D. Mueller, S. Munaretto, J. Munoz Burgos, C. Murphy, K. Murphy, C. Muscatello, C. Myers, A. Nagy, G. Nandipati, M. Navarro, F. Nave, G. Navratil, R. Nazikian, A. Neff, G. Neilson, T. Neiser, W. Neiswanger, D. Nelson, A. Nelson, F. Nespoli, R. Nguyen, L. Nguyen, X. Nguyen, J. Nichols, M. Nocente, S. Nogami, S. Noraky, N. Norausky, M. Nornberg, R. Nygren, T. Odstrcil, D. Ogas, T. Ogorman, S. Ohdachi, Y. Ohtani, M. Okabayashi, M. Okamoto, L. Olavson, E. Olofsson, M. Omullane, R. Oneill, D. Orlov, W. Orvis, T. Osborne, D. Pace, G. Paganini Canal, A. Pajares Martinez, L. Palacios, C. Pan, Q. Pan, R. Pandit, M. Pandya, A. Pankin, Y. Park, J. Park, S. Parker, P. Parks, M. Parsons, B. Patel, C. Pawley, C. Paz-Soldan, W. Peebles, S. Pelton, R. Perillo, C. Petty, Y. Peysson, D. Pierce, A. Pigarov, L. Pigatto, D. Piglowski, S. Pinches, R. Pinsker, P. Piovesan, N. Piper, A. Pironti, R. Pitts, J. Pizzo, U. Plank, M. Podesta, E. Poli, F. Poli, D. Ponce, Z. Popovic, M. Porkolab, G. Porter, C. Powers, S. Powers, R. Prater, Q. Pratt, I. Pusztai, J. Qian, X. Qin, O. Ra, T. Rafiq, T. Raines, R. Raman, J. Rauch, A. Raymond, C. Rea, M. Reich, A. Reiman, S. Reinhold, M. Reinke, R. Reksoatmodjo, Q. Ren, Y. Ren, J. Ren, M. Rensink, J. Renteria, T. Rhodes, J. Rice, R. Roberts, J. Robinson, P. Rodriguez Fernandez, T. Rognlien, A. Rosenthal, S. Rosiello, J. Rost, J. Roveto, W. Rowan, R. Rozenblat, J. Ruane, D. Rudakov, J. Ruiz Ruiz, R. Rupani, S. Saarelma, S. Sabbagh, J. Sachdev, J. Saenz, S. Saib, M. Salewski, A. Salmi, B. Sammuli, C. Samuell, A. Sandorfi, C. Sang, J. Sarff, O. Sauter, K. Schaubel, L. Schmitz, O. Schmitz, J. Schneider, P. Schroeder, K. Schultz, E. Schuster, J. Schwartz, F. Sciortino, F. Scotti, J. Scoville, A. Seltzman, S. Seol, I. Sfiligoi, M. Shafer, S. Sharapov, H. Shen, Z. Sheng, T. Shepard, S. Shi, Y. Shibata, G. Shin, D. Shiraki, R. Shousha, H. Si, P. Simmerling, G. Sinclair, J. Sinha, P. Sinha, G. Sips, T. Sizyuk, C. Skinner, A. Sladkomedova, T. Slendebroek, J. Slief, R. Smirnov, J. Smith, S. Smith, D. Smith, J. Snipes, G. Snoep, A. Snyder, P. Snyder, E. Solano, W. Solomon, J. Song, A. Sontag, V. Soukhanovskii, J. Spendlove, D. Spong, J. Squire, C. Srinivasan, W. Stacey, G. Staebler, L. Stagner, T. Stange, P. Stangeby, R. Stefan, R. Stemprok, D. Stephan, J. Stillerman, T. Stoltzfus-Dueck, W. Stonecipher, S. Storment, E. Strait, D. Su, L. Sugiyama, Y. Sun, P. Sun, Z. Sun, A. Sun, D. Sundstrom, C. Sung, J. Sungcoco, W. Suttrop, Y. Suzuki, T. Suzuki, A. Svyatkovskiy, C. Swee, R. Sweeney, C. Sweetnam, G. Szepesi, M. Takechi, T. Tala, K. Tanaka, X. Tang, S. Tang, Y. Tao, R. Tao, D. Taussig, T. Taylor, K. Teixeira, K. Teo, A. Theodorsen, D. Thomas, K. Thome, A. Thorman, A. Thornton, A. Ti, M. Tillack, N. Timchenko, R. Tinguely, R. Tompkins, J. Tooker, A. Torrezan De Sousa, G. Trevisan, S. Tripathi, A. Trujillo Ochoa, D. Truong, C. Tsui, F. Turco, A. Turnbull, M. Umansky, E. Unterberg, P. Vaezi, P. Vail, J. Valdez, W. Valkis, B. Van Compernolle, J. Van Galen, R. Van Kampen, M. Van Zeeland, G. Verdoolaege, N. Vianello, B. Victor, E. Viezzer, S. Vincena, M. Wade, F. Waelbroeck, J. Wai, T. Wakatsuki, M. Walker, G. Wallace, R. Waltz, W. Wampler, L. Wang, H. Wang, Y. Wang, Z. Wang, G. Wang, S. Ward, M. Watkins, J. Watkins, W. Wehner, Y. Wei, M. Weiland, D. Weisberg, A. Welander, A. White, R. White, S. Wiesen, R. Wilcox, T. Wilks, M. Willensdorfer, H. Wilson, A. Wingen, M. Wolde, M. Wolff, K. Woller, A. Wolz, H. Wong, S. Woodruff, M. Wu, Y. Wu, S. Wukitch, G. Wurden, W. Xiao, R. Xie, Z. Xing, X. Xu, C. Xu, G. Xu, Z. Yan, X. Yang, S. Yang, T. Yokoyama, R. Yoneda, M. Yoshida, K. You, T. Younkin, J. Yu, M. Yu, G. Yu, Q. Yuan, L. Zaidenberg, L. Zakharov, A. Zamengo, S. Zamperini, M. Zarnstorff, E. Zeger, K. Zeller, L. Zeng, M. Zerbini, L. Zhang, X. Zhang, R. Zhang, B. Zhang, J. Zhang, L. Zhao, B. Zhao, Y. Zheng, L. Zheng, B. Zhu, J. Zhu, Y. Zhu, M. Zsutty, M. Zuin, 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, 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, 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, Quiroga, J, Gallo, A, Gao, Q, Garcia, A, 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, 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, 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, De Sousa, A, Trevisan, G, Tripathi, S, 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, 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

7. 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. G. Holland, L. D. Holland, E. M. Hollmann, A. M. Holm, R. Hong, M. Hoppe, S. Houshmandyar, J. Howard, N. T. Howard, Q. Hu, W. Hu, H. Huang, J. Huang, Y. Huang, G. A. Hughes, J. Hughes, D. A. Humphreys, A. W. Hyatt, K. Ida, V. Igochine, Y. In, S. Inoue, A. Isayama, R. C. Isler, V. A. Izzo, M. R. Jackson, A. E. Jarvinen, Y. Jeon, H. Ji, X. Jian, R. Jimenez, C. A. Johnson, I. Joseph, D. N. Kaczala, D. H. Kaplan, J. Kates-Harbeck, A. G. Kellman, D. H. Kellman, C. E. Kessel, K. Khumthong, C. C. Kim, H. Kim, J. Kim, K. Kim, S. H. Kim, W. Kimura, J. R. King, A. Kirk, K. Kleijwegt, M. Knolker, A. Kohn, E. Kolemen, M. Kostuk, G. J. Kramer, P. Kress, D. M. Kriete, R. J. La Haye, F. M. Laggner, H. Lan, M. J. Lanctot, R. Lantsov, L. L. Lao, C. J. Lasnier, C. Lau, K. Law, D. Lawrence, J. Le, R. L. Lee, M. Lehnen, R. Leon, A. W. Leonard, M. Lesher, J. A. Leuer, G. Li, K. Li, K. T. Liao, Z. Lin, C. Liu, F. Liu, Y. Liu, Z. Liu, S. Loch, N. C. Logan, J. M. Lohr, J. Lore, T. C. Luce, N. C. Luhmann, R. Lunsford, C. Luo, Z. Luo, L. Lupin-Jimenez, A. Lvovskiy, B. C. Lyons, X. Ma, R. Maingi, M. A. Makowski, P. Mantica, M. Manuel, M. W. Margo, A. Marinoni, E. Marmar, W. C. Martin, R. L. Masline, G. K. Matsunaga, D. M. Mauzey, P. S. Mauzey, J. T. Mcclenaghan, G. R. Mckee, A. G. Mclean, H. S. Mclean, E. Meier, S. J. Meitner, J. E. Menard, O. Meneghini, G. Merlo, W. H. Meyer, D. C. Miller, W. J. Miller, C. P. Moeller, K. J. Montes, M. A. Morales, S. Mordijck, A. Moser, R. A. Moyer, S. A. Muller, S. Munaretto, M. Murakami, C. J. Murphy, C. M. Muscatello, C. E. Myers, A. Nagy, G. A. Navratil, R. M. Nazikian, A. L. Neff, T. F. Neiser, A. Nelson, P. Nguyen, R. Nguyen, J. H. Nichols, M. Nocente, R. E. Nygren, R. C. O'Neill, T. Odstrcil, S. Ohdachi, M. Okabayashi, E. Olofsson, M. Ono, D. M. Orlov, T. H. Osborne, N. A. Pablant, D. C. Pace, R. R. Paguio, A. Pajares Martinez, C. Pan, A. Pankin, J. M. Park, J. Park, Y. Park, C. T. Parker, S. E. Parker, P. B. Parks, C. J. Pawley, C. A. Paz-Soldan, W. 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, B. Zywicki, 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, 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

8. A multi-species powder dropper for magnetic fusion applications.

Author

Nagy A, Bortolon A, Mauzey DM, Wolfe E, Gilson EP, Lunsford R, Maingi R, Mansfield DK, Nazikian R, and Roquemore AL

Abstract

We present a device for controlled injection of a variety of materials in powder form. The system implements four independent feeder units, arranged to share a single vertical drop tube. Each unit consists of a 80 ml reservoir, coupled to a horizontal linear trough, where a layer of powder is advanced by piezo-electric agitation at a speed proportional to the applied voltage, until it falls into a drop tube. The dropper has been tested with a number of impurities of low (B, BN, C), intermediate (Si, SiC), and high Z (Sn) and a variety of microscopic structures (flakes, spheres, rocks) and sizes (5-200 μ m). For low Z materials, drop rates ∼2-200 mg/s have been obtained showing good repeatability and uniformity. A calibrated light-emitting diode (LED)-based flowmeter allows measuring and monitoring the drop rate during operation. The fast time-response of the four feeders allows combination of steady and pulsed injections, providing a flexible tool for controlled-dose, real-time impurity injection in fusion plasmas.

Published
2018
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results