ICRF sawtooth stabilization: Application on TFTR and CIT
The use of ICRF heating to stabilize the core plasma sawtooth relaxations has been extended to TFTR where such stabilization has been produced at relatively low power in the L Mode regime at moderate density (P{sub RF} = 4 MW, 2.6 MW in helium and deuterium discharges, respectively, for the minority hydrogen ICRF heating regime with {bar n}{sub e}{approx}2.5 {times} 10{sup 13} cm{sup {minus}3}). These results, as in the case of those obtained on JET, are qualitatively consistent with energetic ion stabilization of the m = 1, n = 1 ideal/resistive kink mode. The relevance of sawtooth stabilization to the primary regimes of interest on TFTR -- the high-Q supershot regime and the high density pellet injection regimes -- and on CIT -- the high density ICRF heated regime -- is considered in the context of the present theory and the projected ICRF power deposition characteristics. 35 refs., 11 figs.
- Research Organization:
- Princeton Univ., NJ (USA). Plasma Physics Lab.
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 5925714
- Report Number(s):
- PPPL-2738; ON: DE91010043
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CLOSED PLASMA DEVICES
COMPACT IGNITION TOKAMAK
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
OSCILLATIONS
PLASMA HEATING
SAWTOOTH OSCILLATIONS
STABILITY
TEMPERATURE DISTRIBUTION
TFTR TOKAMAK
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CLOSED PLASMA DEVICES
COMPACT IGNITION TOKAMAK
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
OSCILLATIONS
PLASMA HEATING
SAWTOOTH OSCILLATIONS
STABILITY
TEMPERATURE DISTRIBUTION
TFTR TOKAMAK
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS