Plasma rotation and rf heating in DIII-D

Journal Article · Mon Sep 20 04:00:00 EDT 1999 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.59722· OSTI ID:20216686

Grassie, J S. de ^[1]; Baker, D R ^[1]; Burrell, K H ^[1]; Greenfield, C M ^[1]; Lin-Liu, Y R ^[1]; Luce, T C ^[1]; Petty, C C ^[1]; Prater, R ^[1]; Heidbrink, W W ^[2]; Rice, B W ^[3]

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1. General Atomics, P.O. Box 85608, San Diego, California 92186-5698 (United States)
2. University of California, Irvine, California 992697 (United States)
3. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

In a variety of discharge conditions on DIII-D it is observed that rf electron heating reduces the toroidal rotation speed and core ion temperature. The rf heating can be with either fast wave or electron cyclotron heating and this effect is insensitive to the details of the launched toroidal wavenumber spectrum. To date all target discharges have rotation first established with co-directed neutral beam injection. A possible cause is enhanced ion momentum and thermal diffusivity due to electron heating effectively creating greater anomalous viscosity. Another is that a counter directed toroidal force is applied to the bulk plasma via rf driven radial current. (c) 1999 American Institute of Physics.

• OSTI ID: 20216686
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 485; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON CYCLOTRON-RESONANCE
EXPERIMENTAL DATA
ICR HEATING
MICROWAVE HEATING
ROTATING PLASMA
SAWTOOTH OSCILLATIONS