Search

Your search keyword '"Illy S."' showing total 445 results
Start Over Author "Illy S."
445 results on '"Illy S."'

102. Major results from the first plasma campaign of the Wendelstein 7-X stellarator

Author

Wolf, R.C., Ali, A., Alonso, A., Baldzuhn, J., Beidler, C., Beurskens, M., Biedermann, C., Bosch, H.-S., Bozhenkov, S., Brakel, R., Dinklage, A., Feng, Y., Fuchert, G., Geiger, J., Grulke, O., Helander, P., Hirsch, M., Höfel, U., Jakubowski, M., Knauer, J., Kocsis, G., König, R., Kornejew, P., Krämer-Flecken, A., Krychowiak, M., Landreman, M., Langenberg, A., Laqua, H.P., Lazerson, S., Maaßberg, H., Marsen, S., Marushchenko, M., Moseev, D., Niemann, H., Pablant, N., Pasch, E., Rahbarnia, K., Schlisio, G., Stange, T., Sunn Pedersen, T., Svensson, J., Szepesi, T., Trimino Mora, H., Turkin, Y., Wauters, T., Weir, G., Wenzel, U., Windisch, T., Wurden, G., Zhang, D., Abramovic, I., Äkäslompolo, S., Aleynikov, P., Aleynikova, K., Alzbutas, R., Anda, G., Andreeva, T., Ascasibar, E., Assmann, J., Baek, S.-G., Banduch, M., Barbui, T., Barlak, M., Baumann, K., Behr, W., Benndorf, A., Bertuch, O., Biel, W., Birus, D., Blackwell, B., Blanco, E., Blatzheim, M., Bluhm, T., Böckenhoff, D., Bolgert, P., Borchardt, M., Borsuk, V., Boscary, J., Böttger, L.-G., Brand, H., Brandt, Ch., Bräuer, T., Braune, H., Brezinsek, S., Brunner, K.-J., Brünner, B., Burhenn, R., Buttenschön, B., Bykov, V., Calvo, I., Cannas, B., Cappa, A., Carls, A., Carraro, L., Carvalho, B., Castejon, F., Charl, A., Chernyshev, F., Cianciosa, M., Citarella, R., Ciupiński, Ł., Claps, G., Cole, M., Cole, M.J., Cordella, F., Cseh, G., Czarnecka, A., Czermak, A., Czerski, K., Czerwinski, M., Czymek, G., da Molin, A., da Silva, A., Dammertz, G., Danielson, J., de la Pena, A., Degenkolbe, S., Denner, P., Dhard, D.P., Dostal, M., Drevlak, M., Drewelow, P., Drews, Ph., Dudek, A., Dundulis, G., Durodie, F., van Eeten, P., Effenberg, F., Ehrke, G., Endler, M., Ennis, D., Erckmann, E., Esteban, H., Estrada, T., Fahrenkamp, N., Feist, J.-H., Fellinger, J., Fernandes, H., Fietz, W.H., Figacz, W., Fontdecaba, J., Ford, O., Fornal, T., Frerichs, H., Freund, A., Führer, M., Funaba, T., Galkowski, A., Gantenbein, G., Gao, Y., García Regaña, J., Garcia-Munoz, M., Gates, D., Gawlik, G., Geiger, B., Giannella, V., Gierse, N., Gogoleva, A., Goncalves, B., Goriaev, A., Gradic, D., Grahl, M., Green, J., Grosman, A., Grote, H., Gruca, M., Guerard, C., Haiduk, L., Han, X., Harberts, F., Harris, J.H., Hartfuß, H.-J., Hartmann, D., Hathiramani, D., Hein, B., Heinemann, B., Heitzenroeder, P., Henneberg, S., Hennig, C., Hernandez Sanchez, J., Hidalgo, C., Hölbe, H., Hollfeld, K.P., Hölting, A., Höschen, D., Houry, M., Howard, J., Huang, X., Huber, M., Huber, V., Hunger, H., Ida, K., Ilkei, T., Illy, S., Israeli, B., Ivanov, A., Jablonski, S., Jagielski, J., Jelonnek, J., Jenzsch, H., Junghans, P., Kacmarczyk, J., Kaliatka, T., Kallmeyer, J.-P., Kamionka, U., Karalevicius, R., Kasahara, H., Kasparek, W., Kenmochi, N., Keunecke, M., Khilchenko, A., Kinna, D., Kleiber, R., Klinger, T., Knaup, M., Kobarg, Th., Köchl, F., Kolesnichenko, Y., Könies, A., Köppen, M., Koshurinov, J., Koslowski, R., Köster, F., Koziol, R., Krämer, M., Krampitz, R., Kraszewsk, P., Krawczyk, N., Kremeyer, T., Krings, Th., Krom, J., Krzesinski, G., Ksiazek, I., Kubkowska, M., Kühner, G., Kurki-Suonio, T., Kwak, S., Lang, R., Langish, S., Laqua, H., Laube, R., Lechte, C., Lennartz, M., Leonhardt, W., Lewerentz, L., Liang, Y., Linsmeier, Ch., Liu, S., Lobsien, J.-F., Loesser, D., Loizu Cisquella, J., Lore, J., Lorenz, A., Losert, M., Lubyako, L., Lücke, A., Lumsdaine, A., Lutsenko, V., Majano-Brown, J., Marchuk, O., Mardenfeld, M., Marek, P., Massidda, S., Masuzaki, S., Maurer, D., McCarthy, K., McNeely, P., Meier, A., Mellein, D., Mendelevitch, B., Mertens, Ph., Mikkelsen, D., Mishchenko, O., Missal, B., Mittelstaedt, J., Mizuuchi, T., Mollen, A., Moncada, V., Mönnich, T., Morizaki, T., Munk, R., Murakami, S., Musielok, F., Náfrádi, G., Nagel, M., Naujoks, D., Neilson, H., Neubauer, O., Neuner, U., Ngo, T., Nocentini, R., Nührenberg, C., Nührenberg, J., Obermayer, S., Offermanns, G., Ogawa, K., Ongena, J., Oosterbeek, J.W., Orozco, G., Otte, M., Pacios Rodriguez, L., Pan, W., Panadero, N., Panadero Alvarez, N., Panin, A., Papenfuß, D., Paqay, S., Pavone, A., Pawelec, E., Pelka, G., Peng, X., Perseo, V., Peterson, B., Pieper, A., Pilopp, D., Pingel, S., Pisano, F., Plaum, B., Plunk, G., Povilaitis, M., Preinhaelter, J., Proll, J., Puiatti, M.-E., Puig Sitjes, A., Purps, F., Rack, M., Récsei, S., Reiman, A., Reiter, D., Remppel, F., Renard, S., Riedl, R., Riemann, J., Rimkevicius, S., Riße, K., Rodatos, A., Röhlinger, H., Romé, M., Rong, P., Roscher, H.-J., Roth, B., Rudischhauser, L., Rummel, K., Rummel, T., Runov, A., Rust, N., Ryc, L., Ryosuke, S., Sakamoto, R., Samartsev, A., Sanchez, M., Sano, F., Satake, S., Satheeswaran, G., Schacht, J., Schauer, F., Scherer, T., Schlaich, A., Schlüter, K.-H., Schmitt, J., Schmitz, H., Schmitz, O., Schmuck, S., Schneider, M., Schneider, W., Scholz, M., Scholz, P., Schrittwieser, R., Schröder, M., Schröder, T., Schroeder, R., Schumacher, H., Schweer, B., Shanahan, B., Shikhovtsev, I.V., Sibilia, M., Sinha, P., Sipliä, S., Skodzik, J., Slaby, C., Smith, H., Spiess, W., Spong, D.A., Spring, A., Stadler, R., Standley, B., Stephey, L., Stoneking, M., Stridde, U., Sulek, Z., Surko, C., Suzuki, Y., Szabó, V., Szabolics, T., Szökefalvi-Nagy, Z., Tamura, N., Terra, A., Terry, J., Thomas, J., Thomsen, H., Thumm, M., von Thun, C.P., Timmermann, D., Titus, P., Toi, K., Travere, J.M., Traverso, P., Tretter, J., Tsuchiya, H., Tsujimura, T., Tulipán, S., Turnyanskiy, M., Unterberg, B., Urban, J., Urbonavicius, E., Vakulchyk, I., Valet, S., van Millingen, B., Vela, L., Velasco, J.-L., Vergote, M., Vervier, M., Vianello, N., Viebke, H., Vilbrandt, R., Vorkörper, A., Wadle, S., Wagner, F., Wang, E., Wang, N., Warmer, F., Wegener, L., Weggen, J., Wei, Y., Wendorf, J., Werner, A., Wiegel, B., Wilde, F., Winkler, E., Winters, V., Wolf, S., Wolowski, J., Wright, A., Xanthopoulos, P., Yamada, H., Yamada, I., Yasuhara, R., Yokoyama, M., Zajac, J., Zarnstorff, M., Zeitler, A., Zhang, H., Zhu, J., Zilker, M., Zimbal, A., Zocco, A., Zoletnik, S., Zuin, M., Wolf, R.C., Ali, A., Alonso, A., Baldzuhn, J., Beidler, C., Beurskens, M., Biedermann, C., Bosch, H.-S., Bozhenkov, S., Brakel, R., Dinklage, A., Feng, Y., Fuchert, G., Geiger, J., Grulke, O., Helander, P., Hirsch, M., Höfel, U., Jakubowski, M., Knauer, J., Kocsis, G., König, R., Kornejew, P., Krämer-Flecken, A., Krychowiak, M., Landreman, M., Langenberg, A., Laqua, H.P., Lazerson, S., Maaßberg, H., Marsen, S., Marushchenko, M., Moseev, D., Niemann, H., Pablant, N., Pasch, E., Rahbarnia, K., Schlisio, G., Stange, T., Sunn Pedersen, T., Svensson, J., Szepesi, T., Trimino Mora, H., Turkin, Y., Wauters, T., Weir, G., Wenzel, U., Windisch, T., Wurden, G., Zhang, D., Abramovic, I., Äkäslompolo, S., Aleynikov, P., Aleynikova, K., Alzbutas, R., Anda, G., Andreeva, T., Ascasibar, E., Assmann, J., Baek, S.-G., Banduch, M., Barbui, T., Barlak, M., Baumann, K., Behr, W., Benndorf, A., Bertuch, O., Biel, W., Birus, D., Blackwell, B., Blanco, E., Blatzheim, M., Bluhm, T., Böckenhoff, D., Bolgert, P., Borchardt, M., Borsuk, V., Boscary, J., Böttger, L.-G., Brand, H., Brandt, Ch., Bräuer, T., Braune, H., Brezinsek, S., Brunner, K.-J., Brünner, B., Burhenn, R., Buttenschön, B., Bykov, V., Calvo, I., Cannas, B., Cappa, A., Carls, A., Carraro, L., Carvalho, B., Castejon, F., Charl, A., Chernyshev, F., Cianciosa, M., Citarella, R., Ciupiński, Ł., Claps, G., Cole, M., Cole, M.J., Cordella, F., Cseh, G., Czarnecka, A., Czermak, A., Czerski, K., Czerwinski, M., Czymek, G., da Molin, A., da Silva, A., Dammertz, G., Danielson, J., de la Pena, A., Degenkolbe, S., Denner, P., Dhard, D.P., Dostal, M., Drevlak, M., Drewelow, P., Drews, Ph., Dudek, A., Dundulis, G., Durodie, F., van Eeten, P., Effenberg, F., Ehrke, G., Endler, M., Ennis, D., Erckmann, E., Esteban, H., Estrada, T., Fahrenkamp, N., Feist, J.-H., Fellinger, J., Fernandes, H., Fietz, W.H., Figacz, W., Fontdecaba, J., Ford, O., Fornal, T., Frerichs, H., Freund, A., Führer, M., Funaba, T., Galkowski, A., Gantenbein, G., Gao, Y., García Regaña, J., Garcia-Munoz, M., Gates, D., Gawlik, G., Geiger, B., Giannella, V., Gierse, N., Gogoleva, A., Goncalves, B., Goriaev, A., Gradic, D., Grahl, M., Green, J., Grosman, A., Grote, H., Gruca, M., Guerard, C., Haiduk, L., Han, X., Harberts, F., Harris, J.H., Hartfuß, H.-J., Hartmann, D., Hathiramani, D., Hein, B., Heinemann, B., Heitzenroeder, P., Henneberg, S., Hennig, C., Hernandez Sanchez, J., Hidalgo, C., Hölbe, H., Hollfeld, K.P., Hölting, A., Höschen, D., Houry, M., Howard, J., Huang, X., Huber, M., Huber, V., Hunger, H., Ida, K., Ilkei, T., Illy, S., Israeli, B., Ivanov, A., Jablonski, S., Jagielski, J., Jelonnek, J., Jenzsch, H., Junghans, P., Kacmarczyk, J., Kaliatka, T., Kallmeyer, J.-P., Kamionka, U., Karalevicius, R., Kasahara, H., Kasparek, W., Kenmochi, N., Keunecke, M., Khilchenko, A., Kinna, D., Kleiber, R., Klinger, T., Knaup, M., Kobarg, Th., Köchl, F., Kolesnichenko, Y., Könies, A., Köppen, M., Koshurinov, J., Koslowski, R., Köster, F., Koziol, R., Krämer, M., Krampitz, R., Kraszewsk, P., Krawczyk, N., Kremeyer, T., Krings, Th., Krom, J., Krzesinski, G., Ksiazek, I., Kubkowska, M., Kühner, G., Kurki-Suonio, T., Kwak, S., Lang, R., Langish, S., Laqua, H., Laube, R., Lechte, C., Lennartz, M., Leonhardt, W., Lewerentz, L., Liang, Y., Linsmeier, Ch., Liu, S., Lobsien, J.-F., Loesser, D., Loizu Cisquella, J., Lore, J., Lorenz, A., Losert, M., Lubyako, L., Lücke, A., Lumsdaine, A., Lutsenko, V., Majano-Brown, J., Marchuk, O., Mardenfeld, M., Marek, P., Massidda, S., Masuzaki, S., Maurer, D., McCarthy, K., McNeely, P., Meier, A., Mellein, D., Mendelevitch, B., Mertens, Ph., Mikkelsen, D., Mishchenko, O., Missal, B., Mittelstaedt, J., Mizuuchi, T., Mollen, A., Moncada, V., Mönnich, T., Morizaki, T., Munk, R., Murakami, S., Musielok, F., Náfrádi, G., Nagel, M., Naujoks, D., Neilson, H., Neubauer, O., Neuner, U., Ngo, T., Nocentini, R., Nührenberg, C., Nührenberg, J., Obermayer, S., Offermanns, G., Ogawa, K., Ongena, J., Oosterbeek, J.W., Orozco, G., Otte, M., Pacios Rodriguez, L., Pan, W., Panadero, N., Panadero Alvarez, N., Panin, A., Papenfuß, D., Paqay, S., Pavone, A., Pawelec, E., Pelka, G., Peng, X., Perseo, V., Peterson, B., Pieper, A., Pilopp, D., Pingel, S., Pisano, F., Plaum, B., Plunk, G., Povilaitis, M., Preinhaelter, J., Proll, J., Puiatti, M.-E., Puig Sitjes, A., Purps, F., Rack, M., Récsei, S., Reiman, A., Reiter, D., Remppel, F., Renard, S., Riedl, R., Riemann, J., Rimkevicius, S., Riße, K., Rodatos, A., Röhlinger, H., Romé, M., Rong, P., Roscher, H.-J., Roth, B., Rudischhauser, L., Rummel, K., Rummel, T., Runov, A., Rust, N., Ryc, L., Ryosuke, S., Sakamoto, R., Samartsev, A., Sanchez, M., Sano, F., Satake, S., Satheeswaran, G., Schacht, J., Schauer, F., Scherer, T., Schlaich, A., Schlüter, K.-H., Schmitt, J., Schmitz, H., Schmitz, O., Schmuck, S., Schneider, M., Schneider, W., Scholz, M., Scholz, P., Schrittwieser, R., Schröder, M., Schröder, T., Schroeder, R., Schumacher, H., Schweer, B., Shanahan, B., Shikhovtsev, I.V., Sibilia, M., Sinha, P., Sipliä, S., Skodzik, J., Slaby, C., Smith, H., Spiess, W., Spong, D.A., Spring, A., Stadler, R., Standley, B., Stephey, L., Stoneking, M., Stridde, U., Sulek, Z., Surko, C., Suzuki, Y., Szabó, V., Szabolics, T., Szökefalvi-Nagy, Z., Tamura, N., Terra, A., Terry, J., Thomas, J., Thomsen, H., Thumm, M., von Thun, C.P., Timmermann, D., Titus, P., Toi, K., Travere, J.M., Traverso, P., Tretter, J., Tsuchiya, H., Tsujimura, T., Tulipán, S., Turnyanskiy, M., Unterberg, B., Urban, J., Urbonavicius, E., Vakulchyk, I., Valet, S., van Millingen, B., Vela, L., Velasco, J.-L., Vergote, M., Vervier, M., Vianello, N., Viebke, H., Vilbrandt, R., Vorkörper, A., Wadle, S., Wagner, F., Wang, E., Wang, N., Warmer, F., Wegener, L., Weggen, J., Wei, Y., Wendorf, J., Werner, A., Wiegel, B., Wilde, F., Winkler, E., Winters, V., Wolf, S., Wolowski, J., Wright, A., Xanthopoulos, P., Yamada, H., Yamada, I., Yasuhara, R., Yokoyama, M., Zajac, J., Zarnstorff, M., Zeitler, A., Zhang, H., Zhu, J., Zilker, M., Zimbal, A., Zocco, A., Zoletnik, S., and Zuin, M.

Abstract

After completing the main construction phase of Wendelstein 7-X (W7-X) and successfully commissioning the device, first plasma operation started at the end of 2015. Integral commissioning of plasma start-up and operation using electron cyclotron resonance heating (ECRH) and an extensive set of plasma diagnostics have been completed, allowing initial physics studies during the first operational campaign. Both in helium and hydrogen, plasma breakdown was easily achieved. Gaining experience with plasma vessel conditioning, discharge lengths could be extended gradually. Eventually, discharges lasted up to 6 s, reaching an injected energy of 4 MJ, which is twice the limit originally agreed for the limiter configuration employed during the first operational campaign. At power levels of 4 MW central electron densities reached 3 × 1019 m−3, central electron temperatures reached values of 7 keV and ion temperatures reached just above 2 keV. Important physics studies during this first operational phase include a first assessment of power balance and energy confinement, ECRH power deposition experiments, 2nd harmonic O-mode ECRH using multi-pass absorption, and current drive experiments using electron cyclotron current drive. As in many plasma discharges the electron temperature exceeds the ion temperature significantly, these plasmas are governed by core electron root confinement showing a strong positive electric field in the plasma centre.

Published
2017

103. KIT coaxial gyrotron development: From ITER towards DEMO

Author

Ruess, S., primary, Avramidis, K. A., additional, Fuchs, M., additional, Gantenbein, G., additional, Illy, S., additional, Kalaria, P. C., additional, Kobarg, T., additional, Pagonakis, I. Gr., additional, Rzesnicki, T., additional, Thumm, M., additional, Weggen, J., additional, and Jelonnek, J., additional

Published
2017
Full Text
View/download PDF

104. Conceptual design of the EU DEMO EC-system: main developments and R&D achievements

Author

Granucci, G., primary, Aiello, G., additional, Alberti, S., additional, Avramidis, K.A., additional, Braunmüller, F., additional, Bruschi, A., additional, Chelis, J., additional, Franck, J., additional, Figini, L., additional, Gantenbein, G., additional, Garavaglia, S., additional, Grossetti, G., additional, Illy, S., additional, Ioannidis, Z., additional, Jelonnek, J., additional, Kalaria, P., additional, Latsas, G., additional, Moro, A., additional, Pagonakis, I. Gr., additional, Peponis, D., additional, Poli, E., additional, Rispoli, N., additional, Rzesnicki, T., additional, Scherer, T., additional, Strauss, D., additional, Thumm, M., additional, Tigelis, I., additional, Tsironis, C., additional, Wu, C., additional, Franke, T., additional, and Tran, M.Q., additional

Published
2017
Full Text
View/download PDF

105. Developments of fusion gyrotrons for W7-X, ITER and EU DEMO: Ongoing activities and future plans of KIT

Author

Jelonnek, J., primary, Aiello, G., additional, Avramidis, K., additional, Gantenbein, G., additional, Grossetti, G., additional, Illy, S., additional, Ioannidis, Z. C., additional, Jin, J., additional, Kalaria, P., additional, Marek, A., additional, Pagonakis, I. G., additional, Rzesnicki, T., additional, Ruess, S., additional, Ruess, T., additional, Scherer, T., additional, Schmid, M., additional, Strauss, D., additional, Thumm, M., additional, Wilde, F., additional, Wu, C., additional, and Zein, A., additional

Published
2017
Full Text
View/download PDF

107. Major results from the first plasma campaign of the Wendelstein 7-X stellarator

Author

Wolf, R.C., primary, Ali, A., additional, Alonso, A., additional, Baldzuhn, J., additional, Beidler, C., additional, Beurskens, M., additional, Biedermann, C., additional, Bosch, H.-S., additional, Bozhenkov, S., additional, Brakel, R., additional, Dinklage, A., additional, Feng, Y., additional, Fuchert, G., additional, Geiger, J., additional, Grulke, O., additional, Helander, P., additional, Hirsch, M., additional, Höfel, U., additional, Jakubowski, M., additional, Knauer, J., additional, Kocsis, G., additional, König, R., additional, Kornejew, P., additional, Krämer-Flecken, A., additional, Krychowiak, M., additional, Landreman, M., additional, Langenberg, A., additional, Laqua, H.P., additional, Lazerson, S., additional, Maaßberg, H., additional, Marsen, S., additional, Marushchenko, M., additional, Moseev, D., additional, Niemann, H., additional, Pablant, N., additional, Pasch, E., additional, Rahbarnia, K., additional, Schlisio, G., additional, Stange, T., additional, Sunn Pedersen, T., additional, Svensson, J., additional, Szepesi, T., additional, Trimino Mora, H., additional, Turkin, Y., additional, Wauters, T., additional, Weir, G., additional, Wenzel, U., additional, Windisch, T., additional, Wurden, G., additional, Zhang, D., additional, Abramovic, I., additional, Äkäslompolo, S., additional, Aleynikov, P., additional, Aleynikova, K., additional, Alzbutas, R., additional, Anda, G., additional, Andreeva, T., additional, Ascasibar, E., additional, Assmann, J., additional, Baek, S.-G., additional, Banduch, M., additional, Barbui, T., additional, Barlak, M., additional, Baumann, K., additional, Behr, W., additional, Benndorf, A., additional, Bertuch, O., additional, Biel, W., additional, Birus, D., additional, Blackwell, B., additional, Blanco, E., additional, Blatzheim, M., additional, Bluhm, T., additional, Böckenhoff, D., additional, Bolgert, P., additional, Borchardt, M., additional, Borsuk, V., additional, Boscary, J., additional, Böttger, L.-G., additional, Brand, H., additional, Brandt, Ch., additional, Bräuer, T., additional, Braune, H., additional, Brezinsek, S., additional, Brunner, K.-J., additional, Brünner, B., additional, Burhenn, R., additional, Buttenschön, B., additional, Bykov, V., additional, Calvo, I., additional, Cannas, B., additional, Cappa, A., additional, Carls, A., additional, Carraro, L., additional, Carvalho, B., additional, Castejon, F., additional, Charl, A., additional, Chernyshev, F., additional, Cianciosa, M., additional, Citarella, R., additional, Ciupiński, Ł., additional, Claps, G., additional, Cole, M., additional, Cole, M.J., additional, Cordella, F., additional, Cseh, G., additional, Czarnecka, A., additional, Czermak, A., additional, Czerski, K., additional, Czerwinski, M., additional, Czymek, G., additional, da Molin, A., additional, da Silva, A., additional, Dammertz, G., additional, Danielson, J., additional, de la Pena, A., additional, Degenkolbe, S., additional, Denner, P., additional, Dhard, D.P., additional, Dostal, M., additional, Drevlak, M., additional, Drewelow, P., additional, Drews, Ph., additional, Dudek, A., additional, Dundulis, G., additional, Durodie, F., additional, van Eeten, P., additional, Effenberg, F., additional, Ehrke, G., additional, Endler, M., additional, Ennis, D., additional, Erckmann, E., additional, Esteban, H., additional, Estrada, T., additional, Fahrenkamp, N., additional, Feist, J.-H., additional, Fellinger, J., additional, Fernandes, H., additional, Fietz, W.H., additional, Figacz, W., additional, Fontdecaba, J., additional, Ford, O., additional, Fornal, T., additional, Frerichs, H., additional, Freund, A., additional, Führer, M., additional, Funaba, T., additional, Galkowski, A., additional, Gantenbein, G., additional, Gao, Y., additional, García Regaña, J., additional, Garcia-Munoz, M., additional, Gates, D., additional, Gawlik, G., additional, Geiger, B., additional, Giannella, V., additional, Gierse, N., additional, Gogoleva, A., additional, Goncalves, B., additional, Goriaev, A., additional, Gradic, D., additional, Grahl, M., additional, Green, J., additional, Grosman, A., additional, Grote, H., additional, Gruca, M., additional, Guerard, C., additional, Haiduk, L., additional, Han, X., additional, Harberts, F., additional, Harris, J.H., additional, Hartfuß, H.-J., additional, Hartmann, D., additional, Hathiramani, D., additional, Hein, B., additional, Heinemann, B., additional, Heitzenroeder, P., additional, Henneberg, S., additional, Hennig, C., additional, Hernandez Sanchez, J., additional, Hidalgo, C., additional, Hölbe, H., additional, Hollfeld, K.P., additional, Hölting, A., additional, Höschen, D., additional, Houry, M., additional, Howard, J., additional, Huang, X., additional, Huber, M., additional, Huber, V., additional, Hunger, H., additional, Ida, K., additional, Ilkei, T., additional, Illy, S., additional, Israeli, B., additional, Ivanov, A., additional, Jablonski, S., additional, Jagielski, J., additional, Jelonnek, J., additional, Jenzsch, H., additional, Junghans, P., additional, Kacmarczyk, J., additional, Kaliatka, T., additional, Kallmeyer, J.-P., additional, Kamionka, U., additional, Karalevicius, R., additional, Kasahara, H., additional, Kasparek, W., additional, Kenmochi, N., additional, Keunecke, M., additional, Khilchenko, A., additional, Kinna, D., additional, Kleiber, R., additional, Klinger, T., additional, Knaup, M., additional, Kobarg, Th., additional, Köchl, F., additional, Kolesnichenko, Y., additional, Könies, A., additional, Köppen, M., additional, Koshurinov, J., additional, Koslowski, R., additional, Köster, F., additional, Koziol, R., additional, Krämer, M., additional, Krampitz, R., additional, Kraszewsk, P., additional, Krawczyk, N., additional, Kremeyer, T., additional, Krings, Th., additional, Krom, J., additional, Krzesinski, G., additional, Ksiazek, I., additional, Kubkowska, M., additional, Kühner, G., additional, Kurki-Suonio, T., additional, Kwak, S., additional, Lang, R., additional, Langish, S., additional, Laqua, H., additional, Laube, R., additional, Lechte, C., additional, Lennartz, M., additional, Leonhardt, W., additional, Lewerentz, L., additional, Liang, Y., additional, Linsmeier, Ch., additional, Liu, S., additional, Lobsien, J.-F., additional, Loesser, D., additional, Loizu Cisquella, J., additional, Lore, J., additional, Lorenz, A., additional, Losert, M., additional, Lubyako, L., additional, Lücke, A., additional, Lumsdaine, A., additional, Lutsenko, V., additional, Majano-Brown, J., additional, Marchuk, O., additional, Mardenfeld, M., additional, Marek, P., additional, Massidda, S., additional, Masuzaki, S., additional, Maurer, D., additional, McCarthy, K., additional, McNeely, P., additional, Meier, A., additional, Mellein, D., additional, Mendelevitch, B., additional, Mertens, Ph., additional, Mikkelsen, D., additional, Mishchenko, O., additional, Missal, B., additional, Mittelstaedt, J., additional, Mizuuchi, T., additional, Mollen, A., additional, Moncada, V., additional, Mönnich, T., additional, Morizaki, T., additional, Munk, R., additional, Murakami, S., additional, Musielok, F., additional, Náfrádi, G., additional, Nagel, M., additional, Naujoks, D., additional, Neilson, H., additional, Neubauer, O., additional, Neuner, U., additional, Ngo, T., additional, Nocentini, R., additional, Nührenberg, C., additional, Nührenberg, J., additional, Obermayer, S., additional, Offermanns, G., additional, Ogawa, K., additional, Ongena, J., additional, Oosterbeek, J.W., additional, Orozco, G., additional, Otte, M., additional, Pacios Rodriguez, L., additional, Pan, W., additional, Panadero, N., additional, Panadero Alvarez, N., additional, Panin, A., additional, Papenfuß, D., additional, Paqay, S., additional, Pavone, A., additional, Pawelec, E., additional, Pelka, G., additional, Peng, X., additional, Perseo, V., additional, Peterson, B., additional, Pieper, A., additional, Pilopp, D., additional, Pingel, S., additional, Pisano, F., additional, Plaum, B., additional, Plunk, G., additional, Povilaitis, M., additional, Preinhaelter, J., additional, Proll, J., additional, Puiatti, M.-E., additional, Puig Sitjes, A., additional, Purps, F., additional, Rack, M., additional, Récsei, S., additional, Reiman, A., additional, Reiter, D., additional, Remppel, F., additional, Renard, S., additional, Riedl, R., additional, Riemann, J., additional, Rimkevicius, S., additional, Riße, K., additional, Rodatos, A., additional, Röhlinger, H., additional, Romé, M., additional, Rong, P., additional, Roscher, H.-J., additional, Roth, B., additional, Rudischhauser, L., additional, Rummel, K., additional, Rummel, T., additional, Runov, A., additional, Rust, N., additional, Ryc, L., additional, Ryosuke, S., additional, Sakamoto, R., additional, Samartsev, A., additional, Sanchez, M., additional, Sano, F., additional, Satake, S., additional, Satheeswaran, G., additional, Schacht, J., additional, Schauer, F., additional, Scherer, T., additional, Schlaich, A., additional, Schlüter, K.-H., additional, Schmitt, J., additional, Schmitz, H., additional, Schmitz, O., additional, Schmuck, S., additional, Schneider, M., additional, Schneider, W., additional, Scholz, M., additional, Scholz, P., additional, Schrittwieser, R., additional, Schröder, M., additional, Schröder, T., additional, Schroeder, R., additional, Schumacher, H., additional, Schweer, B., additional, Shanahan, B., additional, Shikhovtsev, I.V., additional, Sibilia, M., additional, Sinha, P., additional, Sipliä, S., additional, Skodzik, J., additional, Slaby, C., additional, Smith, H., additional, Spiess, W., additional, Spong, D.A., additional, Spring, A., additional, Stadler, R., additional, Standley, B., additional, Stephey, L., additional, Stoneking, M., additional, Stridde, U., additional, Sulek, Z., additional, Surko, C., additional, Suzuki, Y., additional, Szabó, V., additional, Szabolics, T., additional, Szökefalvi-Nagy, Z., additional, Tamura, N., additional, Terra, A., additional, Terry, J., additional, Thomas, J., additional, Thomsen, H., additional, Thumm, M., additional, von Thun, C.P., additional, Timmermann, D., additional, Titus, P., additional, Toi, K., additional, Travere, J.M., additional, Traverso, P., additional, Tretter, J., additional, Tsuchiya, H., additional, Tsujimura, T., additional, Tulipán, S., additional, Turnyanskiy, M., additional, Unterberg, B., additional, Urban, J., additional, Urbonavicius, E., additional, Vakulchyk, I., additional, Valet, S., additional, van Millingen, B., additional, Vela, L., additional, Velasco, J.-L., additional, Vergote, M., additional, Vervier, M., additional, Vianello, N., additional, Viebke, H., additional, Vilbrandt, R., additional, Vorkörper, A., additional, Wadle, S., additional, Wagner, F., additional, Wang, E., additional, Wang, N., additional, Warmer, F., additional, Wegener, L., additional, Weggen, J., additional, Wei, Y., additional, Wendorf, J., additional, Werner, A., additional, Wiegel, B., additional, Wilde, F., additional, Winkler, E., additional, Winters, V., additional, Wolf, S., additional, Wolowski, J., additional, Wright, A., additional, Xanthopoulos, P., additional, Yamada, H., additional, Yamada, I., additional, Yasuhara, R., additional, Yokoyama, M., additional, Zajac, J., additional, Zarnstorff, M., additional, Zeitler, A., additional, Zhang, H., additional, Zhu, J., additional, Zilker, M., additional, Zimbal, A., additional, Zocco, A., additional, Zoletnik, S., additional, and Zuin, M., additional

Published
2017
Full Text
View/download PDF

109. Heading From W7-X Gyrotrons Towards Gyrotrons for Demo: Research Strategy and Recent Developments at Kit

Author

Jelonnek, J., primary, Aiello, G., additional, Avramidis, K., additional, Franck, J., additional, Gantenbein, G., additional, Illy, S., additional, Ioannidis, Z. C., additional, Jin, J., additional, Kalaria, P., additional, Pagonakis, I. G., additional, Rzesnicki, T., additional, Ruess, S., additional, Scherer, T., additional, Strauss, D., additional, Thumm, M., additional, and Wu, C., additional

Published
2017
Full Text
View/download PDF

110. Progress of The Experiments With the European 1Mw, 170Ghz Industrial Cw Prototype Gyrotron For Iter

Author

Ioannidis, Z. C., primary, Rzesnicki, T., additional, Avramidis, K., additional, Gantenbein, G., additional, Illy, S., additional, Jin, J., additional, Kobarg, T., additional, Pagonakis, I. Gr., additional, Schmid, M., additional, Thumm, M., additional, Zein, A., additional, Jelonnek, J., additional, Alberti, S., additional, Braunmueller, F., additional, Hogge, J. -P., additional, Schlatter, C., additional, Genoud, J., additional, Tran, M. Q., additional, Kasparek, W., additional, Lechte, C., additional, Chelis, J., additional, Latsas, G. P., additional, Zisis, A., additional, Tigelis, I. G., additional, Bruschi, A., additional, Bin, W., additional, Lontano, M., additional, Hermann, V., additional, Rozier, Y., additional, Legrand, F., additional, Albajar, F., additional, Bonicelli, T., additional, and Frigot, P. -E., additional

Published
2017
Full Text
View/download PDF

112. First CW experiments with the EU ITER 1 MW, 170 GHz industrial prototype gyrotron

Author

Ioannidis, Z. C., primary, Rzesnicki, T., additional, Avramidis, K., additional, Gantenbein, G., additional, Illy, S., additional, Jin, J., additional, Kobarg, T., additional, Pagonakis, I. Gr., additional, Schmid, M., additional, Thumm, M., additional, Jelonnek, J., additional, Hermann, V., additional, Rozier, Y., additional, Legrand, F., additional, Alberti, S., additional, Braunmueller, F., additional, Hogge, J.-P., additional, Schlatter, C., additional, Genoud, J., additional, Tran, M. Q., additional, Kasparek, W., additional, Lechte, C., additional, Vomvoridis, J. L., additional, Chelis, J., additional, Latsas, G. P., additional, Zisis, A., additional, Tigelis, I. G., additional, Bruschi, A., additional, Bin, W., additional, Lontano, M., additional, Albajar, F., additional, Bonicelli, T., additional, and Frigot, P.-E., additional

Published
2017
Full Text
View/download PDF

116. Status of the development of the EU 170 GHz/1 MW/CW gyrotron

Author

Pagonakis, I.G. Albajar, F. Alberti, S. Avramidis, K. Bonicelli, T. Braunmueller, F. Bruschi, A. Chelis, I. Cismondi, F. Gantenbein, G. Hermann, V. Hesch, K. Hogge, J.-P. Jelonnek, J. Jin, J. Illy, S. Ioannidis, Z.C. Kobarg, T. Latsas, G.P. Legrand, F. Lontano, M. Piosczyk, B. Rozier, Y. Rzesnicki, T. Samartsev, A. Schlatter, C. Thumm, M. Tigelis, I.G. Tran, M.-Q. Tran, T.-M. Weggen, J. Vomvoridis, J.L.

Abstract

The progress in the development of the European 170 GHz, 1 MW/CW gyrotron for electron cyclotron heating & current drive (ECH&CD) on ITER is reported. A continuous wave (CW) prototype is being manufactured by Thales Electron Devices (TED), France, while a short-pulse (SP) prototype gyrotron is in parallel under manufacture at Karlsruhe Institute of Technology (KIT), with the purpose of validating the design of the CW industrial prototype components. The fabrication of most of the sub-assemblies of the SP prototype has been completed. In a first step, an existing magnetron injection gun (MIG) available at KIT was used. Despite this non-ideal configuration, the experiments provided a validation of the design, substantiated by an excellent agreement with numerical simulations. The tube, operated without a depressed collector, is able to produce more than 1 MW of output power with efficiency in excess of 30%, as expected, and compatible with the ITER requirements. © 2015 Karlsruhe Institute of Technology.

Published
2015

117. From series production of gyrotrons for W7-X toward EU-1 MW gyrotrons for ITER

Author

Jelonnek, J. Albajar, F. Alberti, S. Avramidis, K. Benin, P. Bonicelli, T. Cismondi, F. Erckmann, V. Gantenbein, G. Hesch, K. Hogge, J.-P. Illy, S. Ioannidis, Z.C. Jin, J. Laqua, H. Latsas, G.P. Legrand, F. Michel, G. Pagonakis, I.G. Piosczyk, B. Rozier, Y. Rzesnicki, T. Tigelis, I.G. Thumm, M. Tran, M.Q. Vomvoridis, J.L.

Abstract

Europe is devoting significant joint efforts to develop and to manufacture MW-level gyrotrons for electron cyclotron heating and current drive of future plasma experiments. The two most important ones are the stellarator Wendelstein W7-X at Greifswald and the Tokamak ITER at Cadarache. While the series production of the 140 GHz, 1 MW, CW gyrotrons for the 10-MW electron cyclotron resonance heating system of stellarator W7-X is proceeding, the European GYrotron Consortium is presently developing the EU-1 MW, 170 GHz, CW gyrotron for ITER. The initial design had already been initiated in 2007, as a risk mitigation measure during the development of the advanced ITER EU-2-MW coaxial-cavity gyrotron. The target of the ITER EU-1-MW conventional-cavity design is to benefit as much as possible from the experiences made during the development and series production of the W7-X gyrotron and of the experiences gained from the earlier EU-2-MW coaxial-cavity gyrotron design. Hence, the similarity of the construction will be made visible in this paper. During 2012, the scientific design of the ITER EU-1-MW gyrotron components has been finalized. In collaboration with the industrial partner Thales electron devices, Vélizy, France, the industrial design of the technological parts of the gyrotron is being completed. A short-pulse prototype is under development to support the design of the CW prototype tube. The technological path toward the EU ITER-1 MW gyrotron and the final design will be presented. © 2013 IEEE.

Published
2014

120. Status and experimental results of the European 1 MW, 170 GHz industrial CW prototype Gyrotron for ITER

Author

Hogge, J.-P., primary, Albajar, F., additional, Alberti, S., additional, Avramidis, K., additional, Bin, W., additional, Bonicelli, T., additional, Braunmueller, F., additional, Bruschi, A., additional, Chelis, J., additional, Frigot, P.-E., additional, Gantenbein, G., additional, Hermann, V., additional, Illy, S., additional, Ioannidis, Z. C., additional, Jelonnek, J., additional, Jin, J., additional, Kasparek, W., additional, Kobarg, T., additional, Latsas, G. P., additional, Lechte, C., additional, Lontano, M., additional, Losert, M., additional, Pagonakis, I. G., additional, Rozier, Y., additional, Rzesnicki, T., additional, Schlatter, C., additional, Schmid, M., additional, Thumm, M., additional, Tigelis, I. G., additional, Tran, M. Q., additional, Vomvoridis, J. L., additional, and Zisis, A. I., additional

Published
2016
Full Text
View/download PDF

121. Progress on the upgrade of the TCV EC-system with two 1MW dual-frequency gyrotrons

Author

Alberti, S., primary, Genoud, J., additional, Goodman, T., additional, Hogge, J.-P., additional, Silva, M., additional, Tran, T. M., additional, Tran, M. Q., additional, Avramidis, K., additional, Pagonakis, I. Gr., additional, Jin, J., additional, Illy, S., additional, Gantenbein, G., additional, Jelonnek, J., additional, Thumm, M., additional, Bin, W., additional, Garavaglia, S., additional, Moro, A., additional, Hermann, V., additional, Legrand, F., additional, and Rozier, Y., additional

Published
2016
Full Text
View/download PDF

125. KIT coaxial gyrotron development: from ITER toward DEMO.

Author

Kallfass, Ingmar, Vossiek, Martin, A. Hein, Matthias, Ruess, S., Avramidis, K. A., Fuchs, M., Gantenbein, G., Ioannidis, Z., Illy, S., Jin, J., Kalaria, P. C., Kobarg, T., Pagonakis, I. Gr., Ruess, T., Rzesnicki, T., Schmid, M., Thumm, M., Weggen, J., Zein, A., and Jelonnek, J.

Published
2018
Full Text
View/download PDF

132. Experimental investigations and analysis of parasitic RF oscillations in high-power gyrotrons

Author

Gantenbein, G. Dammertz, G. Flamm, J. Illy, S. Kern, S. Latsas, G. Piosczyk, B. Rzesnicki, T. Samartsev, A. Schlaich, A. Thumm, M. Tigelis, I.

Subjects
Physics::Accelerator Physics
Abstract

Megawatt gyrotrons are found to suffer from various parasitic oscillations, in particular, RF oscillations in the beam tunnel prior to the desired interaction zone (the cavity). This paper describes the experimental results from a gyrotron experiment which was dedicated to investigate parasitic oscillations in the beam tunnel and to verify improved beam-tunnel structures. A system for improved spectral measurements and a new analysis method are presented. The results verify theoretical predictions on the parasitic oscillations, and in effect validate the corresponding improved beam-tunnel structure. In addition, other types of parasitic oscillations were observed and explained. © 2010 IEEE.

Published
2010

133. An overview of the ITER ECH&CD system and functional capabilities

Author

Henderson M.A., Albajar F., Alberti S., Baruah U., Bigelow T., Becket B., Bertizzolo R., Bonicelli T., Bruschi A., Caughman J., Chavan R., Cirant S., Collazos A., Cox A., Darbos C., de Baar M., Denisov G., Farina D., Gandini F., Gassman T., Goodman T.P. Heidinger R., Hogge J.P., Illy S., Jean O., Jin J., Kajiwara K., Kasparek W., Kasugai A., Kern S., Kobayashi N., Kumric H., Landis J.D., Moro A., Nazare C., Oda Y., Omori T., Paganakis I., Piosczyk B., Platania P., Plaum B., Poli E., Porte L., Purohit D., Ramponi G., Rzesnicki T., Rao S.L., Rasmussen D., Ronde D., Saibene G., Sakamoto K., Sanchez F., Scherer T., Shapiro M., Sozzi C., Spaeh P., Strauss D., Sauter O., Takahashi K., Tanga A., Temkin R., Thumm M., Tran M.Q., Udintsev V.S., Zohm H., and Zucca C.

Subjects
____
Abstract

Articolo numero ITR/P1-10

Published
2010

134. REVIEW OF THE EUROPEAN PROGRAMME FOR THE DEVELOPMENT OF THE GYROTRON FOR ITER

Author

Albajar S., Bonicelli, Saibene, Alberti S., Fasel D., Goodman T., Hogge J.-P., Pagonakis I., Porte L., Tran M.Q., Avramides K., Vomvridis J., Claesen R., Santinelli M., Dunbrais O., Gantenbein G., Kern S., Illy S. Jin J., Piosczyk B., Rzesnicki T., Thumm M., Henderson M., Cirant S., Latsas G., and Tigelis I.

Subjects
Physics, law, Gyrotron, ____, Systems engineering, law.invention
Abstract

____

Published
2009
Full Text
View/download PDF

135. First experimental results from the European union 2-MW coaxial cavity ITER gyrotron prototype

Author

Hogge J. P., Goodman T. P., Alberti S., Albajar F., Avramides K. A., Benin P., Bethuys S., Bin W., Bonicelli T., Bruschi A., Cirant S., Droz E., Dumbrajs O., Fasel D., Gandini F., Gantenbein G., Illy S., Jawla S., Jin J., Kern S., Lavanchy P., Liévin C., Marletaz, Marmillod P., Perez A., Piosczyk B., Pagonakis I., Porte L., Rzesnickl T., Siravo U., Thumm M., and Tran M. Q.

Subjects
high-power microwave sources, ITER, gyrotrons
Abstract

The European Union is working toward providing 2-MW, coaxial-cavity, continuous-wave (cw) 170-GHz gyrotrons for ITER. Their design is based on results,from an experimental preprototype tube having a pulse length of several milliseconds, in operation at Forschungszentrum Karlsruhe (FZK) for several years now. The first industrial prototype tube was designed for cw operation but, in a first phase, aimed at a pulse length of 1 s at the European Gyrotron Test Facility in Lausanne, Switzerland, as part of a phased testing/development program. (1 s, 60 s, cw). The first experimental results of the operation of this prototype gyrotron are reported here. The microwave generation was characterized at very short pulse length (

Published
2009

139. REVIEW OF THE EUROPEAN PROGRAMME FOR THE DEVELOPMENT OF THE GYROTRON FOR ITER

Author

Albajar, F. Bonicelli, T. Saibene, G. Alberti, S. Fasel, D. Goodman, T. Hogge, J-P. Pagonakis, I. Porte, L. and Tran, M. Q. Avramides, K. Vomvoridis, J. Claesen, R. and Santinelli, M. Dumbrajs, O. Gantenbein, G. Kern, S. and Illy, S. Jin, J. Piosczyk, B. Rzesnicki, T. Thumm, M. and Henderson, M. Cirant, S. Latsas, G. Tigelis, I.

Abstract

The EU programme for the development of the gyrotron for ITER, carried out in cooperation between European laboratories and industrial partners, consists of (i) the manufacturing and testing the 2 MW, CW coaxial cavity gyrotron at 170 GHz meeting both technological constraints and ITER specifications. This goal will be conducted in three different steps: 1 s, 60 s and CW; (ii) in parallel, the development and improvement of critical components for the coaxial concept will continue. While the coaxial concept provides substantial advantages in terms of cost and EC power available for the ITER system with respect to the I MW cylindrical cavity gyrotron, the development programme entails additional risks due to both the relatively tight schedule and the developments still required. A fall back option consisting in a more traditional I MW gyrotron is foreseen in case of major difficulties in the development of the 2 MW coaxial cavity gyrotron. This alternative development is expected to benefit from the successful development of the 140 GHz gyrotron for W7-X; (iii) a Test Facility for testing at high power, CW the prototype gyrotrons and other EC H&CD system components has been established at the CRPP, in Lausanne. The tests with the first prototype of coaxial gyrotron are currently progressing. A decision point between the coaxial and cylindrical cavity concept is expected by the end of 2009 when the tests with the first and refurbished prototype will be available.

Published
2009

141. Towards the formulation of a realistic 3D model for simulation of magnetron injection guns for gyrotrons (a preliminary study)

Author

Sabchevski, S., Illy, S., Piosczyk, B., Borie, E., and Zhelyazkov, I.

Subjects
ddc:620, Engineering & allied operations
Abstract

Fortschritte in der Formulierung eines realistischen 3D-Modells für die Simulation von Elektronenkanonen für Gyrotrons (Eine vorläufige Studie) Numerische Experimente, die auf adäquaten, selbst-konsistenten physikalischen Modellen basieren, werden in einem breiten Umfang für das computerunterstützte Design (CAD), die Analyse und Optimierung von elektronenoptischen Systemen von Gyrotrons eingesetzt. Ein wesentlicher Teil des benötigten physikalischen Modells ist das Emissionsmodell, d.h. die Beschreibung des vom Emitter erzeugten Strahlstroms sowie die Energieverteilung und die räumliche und winkelabhängige Verteilung der emittierten Elektronen. In dieser Arbeit präsentieren wir eine Zusammenfassung der grundlegenden Theorie, die wesentlichen Formeln und eine Diskussion der wichtigsten Faktoren für die Inhomogenität der Emission und der Geschwindigkeitsstreuung. Zusätzlich wird ein Überblick über die in verschiedenen Ray-Tracing und Particle-In-Cell (PIC) Codes eingesetzten Emissionsmodelle geliefert und eine allgemeine Formulierung eines dreidimensionalen Emissionsmodells präsentiert, das auf der Zerlegung der kathodennahen Region durch eine Anzahl entsprechender Diodensegmente basiert. Wir glauben, dass diese Zusammenfassung bei der Entwicklung neuer Programm-Module zur Berechnung der Elektronen-Anfangsverteilung sehr hilfreich sein wird. Damit können sowohl bereits existierende zweidimensionale Computerprogramme, als auch neu zu entwickelnde dreidimensionale Simulationswerkzeuge ausgestattet werden

Published
2008
Full Text
View/download PDF

143. Status of the 2 MW 110 GHz Coaxial Cavity Gyrotron for ITER

Author

Piosczyk B., Albajar F., Alberti S., Benin P., Bin W., Bonicelli T., Cirant S., Dammertz G., Dumbrajs O., Fasel D., Flamm J., Gantenbein G., Giguet E., Goodman T., Hogge J. P., Illy S., Jin J., Lievin C., Prinz O., Rzesnicki T., Schmid M., Thumm M., and Tran M.Q

Subjects
___
Abstract

A 170 GHz coaxial cavity gyrotron with 2 MW output power in continuous wave (CW) operation is under development in cooperation between European research centres together with European industry. A first industrial prototype of such a gyrotron has already been fabricated and delivered to CRPP Lausanne, where a suitable test facility has been constructed. Due to a delay in fabrication the delivery of the gyrotron magnet is expected in May 2007. Thus experimental tests are expected for the second half of this year. In parallel to the industrial activities, experimental operation with a short pulse (~ few ms) 170 GHz coaxial gyrotron ("pre-prototype") which uses the same main components as designed for the industrial tube has been continued. The mechanism of parasitic low frequency (LF) oscillations around 260 MHz has been identified. Based on this identification, small modifications of the geometry of the coaxial insert have been made. As a result the starting current for the LF oscillations has been increased by a factor of about 3 causing a strong reduction of the LF amplitude. Measurements with a prototype of a microwave load, which has been designed and fabricated for operation with the 2 MW prototype tube, have been performed. In addition to the distribution of the microwave power absorbed on the wall, the amount of power reflected back into the gyrotron has been measured and its influence on gyrotron performance has been investigated. The performance of the quasi optical (q.o.) RF output system presently installed in the industrial prototype tube is insufficient, mainly because of the low Gaussian content of the RF output beam. As a first step a new launcher with a different wall corrugation and a new adapted phase correcting mirror has been designed and fabricated. According to simulations an increase of the Gaussian content to about 87% is expected. This q.o. RF output system has been installed in the pre-prototype tube for performing hot measurements. ( This work was carried out within the framework of EFDA)

Published
2007

144. Experimental results of the 1-MW,140-GHz, CW Gyrotron for W7-X

Author

Gantenbein, G., Alberti, S., Arnold, A., Dammertz, G., Erckmann, V., Giguet, E., Heidinger, R., Hogge, J., Illy, S., Kasparek, W., Laqua, H., Legrand, F., Leonhardt, W., Liévin, C., Michel, G., Neffe, G., Piosczyk, B., Schmid, M., Thumm, M., and Tran, M.

Published
2007

148. Progress in the Development of 1 MW CW Gyrotrons for the Stellarator W7-X

Author

Dammertz, G., Alberti, S., Arnold, A., Brand, P., Braune, H., Borie, E., Erckmann, V., Gantenbein, G., Giguet, E., Heidinger, R., Hogge, J., Illy, S., Kasparek, W., Koppenburg, K., Kuntze, M., Laqua, H., LeCloarec, G., Legrand, F., Leonhardt, W., Liévin, C., Magne, R., Michel, G., Müller, G., Neffe, G., Piosczyk, B., Schmid, M., Schwörer, K., Thumm, M., and Tran, M.

Published
2004

Catalog

Books, media, physical & digital resources
See catalog results