Zobrazeno 1 - 10
of 155
pro vyhledávání: '"S Cauffman"'
Publikováno v:
2017 IEEE International Conference on Plasma Science (ICOPS).
A dual-frequency gyrotron allowing operation at either 104 GHz or 140 GHz has been developed for use in plasma heating experiments at the W7-X stellarator at IPP Greifswald. The gyrotron has been fabricated, tested, and shipped to the installation si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66d86e4cb127450705e4b011cfb1bfe9
https://doi.org/10.1109/plasma.2017.8496253
https://doi.org/10.1109/plasma.2017.8496253
Autor:
S. Cauffman, A. Staprans, Alex Waggoner, Galen Aymar, Lou Zitelli, Brad Stockwell, Scott Forrest, Edward Eisen, Rasheda Begum
Publikováno v:
2017 Eighteenth International Vacuum Electronics Conference (IVEC).
The Goldstone Solar System Radar (GSSR), part of the Deep Space Network (DSN), utilizes a 70 meter antenna and a 500kW CW transmitter powered by two VKX-7864B, 250kW CW X-band (8560 MHz) klystrons. The VKX-7864B klystron, developed in 1988, required
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bfc2556775e040a851b76f49ae2a67c
https://doi.org/10.1109/ivec.2017.8289728
https://doi.org/10.1109/ivec.2017.8289728
Publikováno v:
Fusion Engineering and Design. 88:521-524
An upgrade of the electron cyclotron heating system on DIII-D to almost 15 MW is being planned which will expand it from a system with six 1 MW 110 GHz gyrotrons to one with ten gyrotrons. A depressed collector 1.2 MW 110 GHz gyrotron is being commis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a670bb411680188ec5116c5cee98c728
https://doi.org/10.1016/j.fusengdes.2013.01.079
https://doi.org/10.1016/j.fusengdes.2013.01.079
Design and testing of a dual-frequency 104/140 GHz megawatt-class gyrotron for fusion plasma heating
Publikováno v:
2016 IEEE International Conference on Plasma Science (ICOPS).
CPI's existing 140 GHz, 900 kW, long-pulse gyrotron design has been adapted to enable operation in an alternative mode at 104 GHz, in addition to the primary 140 GHz mode. The dual-frequency version of this gyrotron has been developed for use in plas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00f65f89fc7ce08403925f13cee26b7e
https://doi.org/10.1109/plasma.2016.7533956
https://doi.org/10.1109/plasma.2016.7533956
Autor:
Phillip C. Chamberlin, Nicholas M. Schneider, J. M. Grebowsky, Jean-Yves Chaufray, Jane L. Fox, Robert Lillis, D. D. Carson, W. P. Sidney, David Brain, C. Mazelle, C. L. Waters, C. Gomez-Rosa, O. Cheatom, Robert P. Lin, James P. McFadden, Bruce M. Jakosky, Gregory T. Delory, Janet G. Luhmann, Todd King, D. Toublanc, D. Baird, Paul R. Mahaffy, Xiaohua Fang, Mario H. Acuña, W. K. Peterson, G. Beutelschies, J. Morrissey, Russell A. Howard, William E. McClintock, D. W. Curtis, M. Jarosz, D. L. Mitchell, S. Cauffman, John Clarke, Martin B. Houghton, Robert H. Tolson, François Leblanc, David L. Mitchell, Jean-André Sauvaud, T. Priser, N. Jedrich, S. Demcak, Thomas E. Cravens, Anders Eriksson, M. Johnson, S. Habenicht, David Folta, Jasper Halekas, Wayne Kasprzak, Mehdi Benna, Frank Eparvier, A. I. F. Stewart, M. Kelley, Daniel N. Baker, Richard W. Zurek, Robert E. Ergun, Jared Espley, Stephen W. Bougher, Gregory M. Holsclaw, Franck Montmessin, S. Sparacino, A. DeWolfe, Franck Lefèvre, Mark R. Lankton, John E. P. Connerney, Thomas N. Woods, Davin Larson, Roger V. Yelle, L. Andersson, R. Bartlett, W. Possel
Publikováno v:
Space Science Reviews
Space Science Reviews, Springer Verlag, 2015, 195 (1-4), pp.3-48. ⟨10.1007/s11214-015-0139-x⟩
Space Science Reviews, 2015, 195 (1-4), pp.3-48. ⟨10.1007/s11214-015-0139-x⟩
Space Science Reviews, Springer Verlag, 2015, 195 (1-4), pp.3-48. ⟨10.1007/s11214-015-0139-x⟩
Space Science Reviews, 2015, 195 (1-4), pp.3-48. ⟨10.1007/s11214-015-0139-x⟩
International audience; The MAVEN spacecraft launched in November 2013, arrived at Mars in September 2014, and completed commissioning and began its one-Earth-year primary science mission in November 2014. The orbiter’s science objectives are to ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9eba806d977165fd18b608b0efee8b59
https://hal-insu.archives-ouvertes.fr/insu-01140591
https://hal-insu.archives-ouvertes.fr/insu-01140591
Publikováno v:
Journal of Physics: Conference Series. 25:13-23
Recent tests of two different megawatt-class gyrotrons at CPI provide a design baseline for the 120 GHz, 1 MW CW gyrotrons required by ITER for plasma start-up. The two gyrotron designs include a 140 GHz, 900 kW CW device that was delivered to the Ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3227c6300aafc933918a99a1d144ab55
https://doi.org/10.1088/1742-6596/25/1/003
https://doi.org/10.1088/1742-6596/25/1/003
Publikováno v:
2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS).
CPI is developing gyrotrons for fusion plasma heating and current drive at several frequencies. Several of these gyrotrons have undergone initial testing, and are being rebuilt to improve performance. Others are nearing completion of fabrication, wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e52c270109a8f056663ef95382e3b02d
https://doi.org/10.1109/plasma.2014.7012727
https://doi.org/10.1109/plasma.2014.7012727
Autor:
S J Zweben, V Arunasalam, S H Batha, R V Budny, C E Bush, S Cauffman, C S Chang, Z Chang, C Z Cheng, D S Darrow, R O Dendy, H H Duong, N J Fisch, E D Fredrickson, R K Fisher, R J Fonck, G Y Fu, V Goloborod'ko, N Gorelenkov, R J Hawryluk, R Heeter, W W Heidbrink, H W Herrmann, M Herrmann, D W Johnson, J Machuzak, R Majeski, K M McGuire, G McKee, S S Medley, H E Mynick, R Nazikian, M P Petrov, M H Redi, S Reznik, J Rogers, G Schilling, D A Spong, J D Strachan, B C Stratton, E Synakowski, G Taylor, S Wang, R B White, K L Wong, V Yavorski, the TFTR Group
Publikováno v:
Plasma Physics and Controlled Fusion. 39:A275-A283
A summary is presented of recent alpha-particle experiments on the tokamak fusion test reactor. Alpha particles are generally well confined in MHD-quiescent discharges, and alpha heating of electrons has been observed. The theoretically predicted tor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4eff9b88f4b8efef6bfe6778bfd62174
https://doi.org/10.1088/0741-3335/39/5a/025
https://doi.org/10.1088/0741-3335/39/5a/025
Autor:
J. Mcchesney, E. J. Strait, S. H. Batha, R. E. Bell, Harold P. Furth, D.K. Owens, V. Yavorski, H. H. Duong, I. Semenov, A. Kumar, J. S. Kim, Michael A. Beer, Stanley Kaye, Leonid E. Zakharov, Masaaki Yamada, E.D. Fredrickson, K. L. Wong, A. von Halle, D.C. McCune, M.G. Bell, Larry R. Grisham, A. V. Krasilnikov, E. Ruskov, W. Stodiek, R. O. Dendy, J. C. Hosea, P. C. Efthimion, Guoyong Fu, M. Hughes, G. A. Navratil, A. Belov, N. T. Lam, Robert Budny, B.P. LeBlanc, Hyeon K. Park, J. Manickam, T. Stevenson, G. L. Schmidt, W. Park, James R. Wilson, G. Mckee, J. Machuzak, Richard Majeski, Manfred Bitter, H. W. Herrmann, M. Sasao, D. R. Ernst, J. Callen, Chio-Zong Cheng, R. K. Fisher, Yoshio Nagayama, S. A. Sabbagh, S. D. Scott, S. von Goeler, F. M. Levinton, Nikolai Gorelenkov, K. W. Hill, G. Rewoldt, D. R. Mikkelsen, R. T. Walters, William Tang, R.J. Hawryluk, G. Schilling, S. F. Paul, E. J. Synakowski, S. S. Medley, Nathaniel J. Fisch, M. Williams, B. Rice, K. M. McGuire, Roscoe White, A. T. Ramsey, J. D. Strachan, T. Senko, G. Taylor, B. Breizman, H. Takahashi, S. Bernabei, R. Kaita, G. A. Wurden, W. A. Houlberg, D. Mueller, B. C. Stratton, Michael E. Mauel, Michael W Kissick, A. L. Roquemore, C.H. Skinner, P. Phillips, V.Ya. Goloborod'ko, S. Cauffman, M. C. Zarnstorff, William Dorland, J. Hogan, E. Mazzucato, D. L. Jassby, S. V. Mirnov, F. C. Jobes, M. H. Redi, M. Okabayashi, J. Kesner, Kenneth M. Young, W. W. Heidbrink, Dale Meade, J. H. Rogers, M. E. Thompson, S.N. Reznik, M. Phillips, Gregory W. Hammett, H. Berk, C. E. Bush, R. J. Fonck, H. Evenson, N. L. Bretz, Z. Chang, D.K. Mansfield, Raffi Nazikian, R. Wieland, Stewart Zweben, B. Hooper, H.W. Kugel, David Johnson, M. P. Petrov, D. S. Darrow, M. C. Herrmann, C. Ludescher, Choong-Seock Chang, P. H. LaMarche, C. K. Phillips, Shoujun Wang, B. Grek, M. Osakabe
Publikováno v:
Physics of Plasmas. 4:1714-1724
Experiments in the Tokamak Fusion Test Reactor (TFTR) have explored several novel regimes of improved tokamak confinement in deuterium-tritium (D-T) plasmas, including plasmas with reduced or reversed magnetic shear in the core and high-current plasm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0b30c18f6c43696bb999d986f530232
https://doi.org/10.1063/1.872274
https://doi.org/10.1063/1.872274
Publikováno v:
2013 Abstracts IEEE International Conference on Plasma Science (ICOPS).
Summary form only given. The experimental demonstration of a 527 GHz, continuous wave (CW) gyrotron operating at the second cyclotron harmonic in a 9.7 T magnetic field is described. The gyrotron is currently being used in Dynamic Nuclear Polarizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55fe272a29698082bf024925c8267f61
https://doi.org/10.1109/plasma.2013.6635226
https://doi.org/10.1109/plasma.2013.6635226