Mode particle resonances during near-tangential neutral beam injection in large tokamaks

Technical Report · Fri Jan 01 00:00:00 EST 1988

DOI:https://doi.org/10.2172/7108776· OSTI ID:7108776

Kaita, R; White, R B; Morris, A W; Fredrickson, E D; McGuire, K M; Medley, S S; Scott, S D

Coherent magnetohydrodynamic modes have been observed during neutral beam injection in TFTR and JET. Periodic bursts of oscillations were detected with several plasma diagnostics, and Fokker-Planck calculations show that the populations of trapped particles in both tokamaks are sufficient to account for fishbone destabilization. Estimates of mode parameters are in reasonable agreement with the experiments, and they indicate that the fishbone mode may continue to affect the performance of intensely heated tokamaks. 13 refs., 1 fig., 1 tab.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7108776
• Report Number(s): PPPL-2493; ON: DE88009354
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
TOKAMAK DEVICES
NEUTRAL ATOM BEAM INJECTION
BEAM INJECTION HEATING
FISHBONE INSTABILITY
BEAM INJECTION
CLOSED PLASMA DEVICES
HEATING
INSTABILITY
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
THERMONUCLEAR DEVICES
700107* - Fusion Energy- Plasma Research- Instabilities
700101 - Fusion Energy- Plasma Research- Confinement
Heating
& Production