Modeling of Synergy Between 4th and 6th Harmonic Absorptions of Fast Waves on Injected Beams in DIII-D Tokamak

Journal Article · Fri Dec 23 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3664984· OSTI ID:21612496

Choi, M; Pinsker, R I; Chan, V S ^[1]; Muscatello, C M ^[2]; Jaeger, E F ^[3]

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1. General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)
2. University of California-Irvine, Irvine, California, 92697 (United States)
3. XCEL Engineering Inc., Oak Ridge, Tennessee 37830 (United States)

In recent moderate to high harmonic fast wave heating and current drive experiments in DIII-D, a synergy effect was observed when the 6{sup th} harmonic 90 MHz fast wave power is applied to the plasma preheated by neutral beams and the 4{sup th} harmonic 60 MHz fast wave. In this paper, we investigate how the synergy can occur using ORBIT-RF coupled with AORSA. Preliminary simulations suggest that damping of 4{sup th} harmonic FW on beam ions accelerates them above the injection energy, which may allow significant damping of 6{sup th} harmonic FW on beam ion tails to produce synergy.

• OSTI ID: 21612496
• Journal Information: AIP Conference Proceedings, Vol. 1406, Issue 1; Conference: 9. topical conference on radio frequency power in plasmas, Newport (United States), 1-3 Jun 2011; Other Information: DOI: 10.1063/1.3664984; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION
ALFVEN WAVES
COMPUTERIZED SIMULATION
CURRENT-DRIVE HEATING
DAMPING
DOUBLET-3 DEVICE
IONS
MHZ RANGE
PLASMA
PLASMA SIMULATION
RF SYSTEMS
CHARGED PARTICLES
CLOSED PLASMA DEVICES
ELECTRIC HEATING
FREQUENCY RANGE
HEATING
HYDROMAGNETIC WAVES
JOULE HEATING
PLASMA HEATING
SIMULATION
SORPTION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES