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

Journal Article · Fri Dec 23 04:00:00 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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1406; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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