Overview of the initial NSTX experimental results

Autor: K. W. Hill, Fred Levinton, R.J. Hawryluck, E. Mazzucato, M. Williams, Hantao Ji, T. Stevenson, D. S. Darrow, D. Mueller, K. C. Lee, S.F. Paul, E. J. Synakowski, Robert Kaita, W. Zhu, Neville C. Luhmann, G. A. Wurden, B. C. Stratton, R. Hatcher, Stanley Kaye, Xueqiao Xu, William R. Wampler, Abhay K. Ram, D.W. Swain, Stewart Zweben, R. E. Bell, R. A. Ellis, Dan Stutman, P.M. Ryan, M. Kalish, A. von Halle, J.M. Bialek, R. Parsells, H. Hayashiya, M.J. Schaffer, Thomas Jarboe, T. Peebles, W. Blanchard, P. Roney, E. J. Doyle, L.L. Lao, John B Wilgen, C. Neumeyer, Syun'ichi Shiraiwa, T. Gibney, C.H. Skinner, S. Kubota, P. H. LaMarche, C. K. Phillips, J. Manickam, S.A. Sabbagh, J.G. Yang, Ricardo Maqueda, Abraham Bers, R. Raman, W. Davis, J. Chrzanowski, David Johnson, Osamu Mitarai, H.W. Kugel, James R. Wilson, B. A. Nelson, Richard Majeski, J. Robinson, Hyeon K. Park, G. Pearson, R. I. Pinsker, A. Rosenberg, D.P. Stotler, P. C. Efthimion, P.T. Bonoli, G.D. Porter, E. Fredd, Stephen Jardin, Nobuhiro Nishino, David Gates, Robert James Goldston, Lei Zeng, S. Ramakrishnan, Masayoshi Nagata, Yuichi Takase, R. Ackers, Yueng Kay Martin Peng, E.D. Fredrickson, L. Dudek, M.M. Menon, Michael Finkenthal, M.G. Bell, Masayuki Ono, Larry R. Grisham, P. Sichta, R. Marsala, Rajesh Maingi, A. L. Roquemore, T.S. Bigelow, T. K. Mau, S. S. Medley, G. Oliaro, Jonathan Menard, G. Taylor, R. E. Barry, B. McCormack, Mark D. Carter, J.R. Ferron, F. Paoletti, Manfred Bitter, J. C. Hosea, B.P. LeBlanc
Rok vydání: 2001
Předmět:
Zdroj: Nuclear Fusion. 41:1435-1447
ISSN: 0029-5515
Popis: The main aim of the National Spherical Torus Experiment (NSTX) is to establish the fusion physics principles of the spherical torus (ST) concept. The NSTX device began plasma operations in February 1999 and the plasma current Ip was successfully brought up to the design value of 1 MA on 14 December 1999. The planned plasma shaping parameters, elongation κ = 1.6-2.2 and triangularity δ = 0.2-0.4, were achieved in inner wall limited, and single null and double null diverted configurations. The coaxial helicity injection (CHI) and high harmonic fast wave (HHFW) experiments were also initiated. CHI current of 27 kA produced up to 260 kA toroidal current without using an ohmic solenoid. With the injection of 2.3 MW of HHFW power, using 12 antennas connected to six transmitters, electrons were heated from a central temperature of 400 eV to 900 eV at a central density of 3.5 × 1013 cm-3, increasing the plasma energy to 59 kJ and the toroidal β, βT, to 10%. The NBI system commenced operation in September 2000. The initial results with two ion sources (PNBI = 2.8 MW) show good heating, producing a total plasma stored energy of 90 kJ corresponding to βT ≈ 18% at a plasma current of 1.1 MA.
Databáze: OpenAIRE