ICRF heating on TFTR-effect on stability and performance

Conference · Mon Mar 01 04:00:00 EST 1993

OSTI ID:10155827

Wilson, J R; Bell, M G; Biglari, H; Bitter, M; Bretz, N L; Budny, R; Chen, L; Darrow, D; Efthimion, P C; Fredrickson, E; Fu, G Y; Grek, B; Grisham, L R; Hammett, G; Hawryluk, R J; Hosea, J C; Janos, A; Jassby, D; Jobes, F C; Johnson, D W ; Johnson, L C; Majeski, R; Mansfield, D K; Mazzucato, E; McGuire, K M; Medley, S S; Mueller, D; Nazikian, R; Owens, D K; Park, H; Paul, S; Phillips, C K; Ramsey, A T; Rogers, J H; Roquemore, A L; Schilling, G; Schivell, J; Schmidt, G L; Stevens, J; Stratton, B C; Strachan, J D; Synakowsi, E; Taylor, G; Ulrickson, M; Wong, K L; Yamada, M; Young, K M; Zarnstoff, M C; Zweben, S J ^[1]; Bush, C E; Goldfinger, R; Hoffman, D; Mukarami, M; Rasmussen, D ^[2]; Chang, Z ^[3]; Machuzak, J ^[4]; Rimini, F ^[5]

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1. Princeton Univ., NJ (United States). Plasma Physics Lab.
2. Oak Ridge National Lab., TN (United States)
3. Wisconsin Univ., Madison, WI (United States)
4. JET Joint Undertaking, Abingdon (United Kingdom)
5. Massachusetts Inst. of Tech., Cambridge, MA (United States)

With the addition of two new antennas and two radiofrequency (RF) generators, the TFTR ICRF system is complete. The total complement of four antennas and six generators is designed for 12.5 MW operation. Experiments with this system have been performed recently on TFTR in the low recycling regime to increase the performance of supershot plasmas, in a non-resonant regime to explore electron heating, and in high recycling discharges with energetic ion tails to simulate fusion alpha particles. Noteworthy results include: direct electron heating observed with absorption rates in agreement with theory; electron heating of supershot plasmas ({Delta}TEO {approximately} 2 key) via energetic ion tails that would increase the pressure of the alpha particles in DT plasmas; and the first observation of the toroidal Alfven eigenmode (TAE) instability driven by the energetic ion tail in hydrogen minority heating.

• Research Organization: Princeton Univ., NJ (United States). Plasma Physics Lab.
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 10155827
• Report Number(s): PPPL--2890; IAEA-CN--56/E-2-2; CONF-920913--28; ON: DE93011496
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350
ALPHA PARTICLES
ANTENNAS
ICR HEATING
MHD EQUILIBRIUM
PERFORMANCE
PLASMA INSTABILITY
PLASMA PRODUCTION, HEATING, CURRENT DRIVE, AND INTERACTIONS
TFTR TOKAMAK