Ray tracing and absorption of electron cyclotron waves in the L-2 stellarator

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5217048

Goldfinger, R C ^[1]; Likin, K M ^[2]; Ochirov, B D ^[3]

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1. Oak Ridge National Lab., TN (United States)
2. AN SSSR, Moscow (USSR). Inst. Obshchey Fiziki
3. AN SSSR, Novosibirsk (USSR). Inst. Avtomatiki i Ehlektrometrii

The absorption of electron cyclotron waves in L-2 stellarator plasmas has been investigated by adapting the RAYS geometrical optics code developed at Oak Ridge National Laboratory to the parameters of L-2. Two heating schemes were considered: Low-field launching of the ordinary wave at the fundamental resonance and low-field launching of the extraordinary wave at the second harmonic. Significant power absorption (up to 100%) of the extraordinary mode at the second harmonic resonance was obtained. A multipass absorption model was used to estimate the contribution to plasma heating of the power that remains after the first pass which is subsequently reflected from the vessel walls. Finally, results obtained with the RAYS code and with a code developed at the Institute of Automation and Electrometry were compared and found to be in good agreement. 6 refs., 4 figs.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5217048
• Report Number(s): CONF-910869-14; ON: DE92000741; TRN: 91-028007
• Resource Relation: Conference: 9. topical conference on radio frequency power in plasmas, Charleston, SC (United States), 12-14 Aug 1991
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON CYCLOTRON-RESONANCE
WAVE PROPAGATION
L-2 STELLARATOR
ECR HEATING
ABSORPTION
ELECTRON TEMPERATURE
MAGNETIC FIELDS
OPTICS
CLOSED PLASMA DEVICES
CYCLOTRON RESONANCE
HEATING
HIGH-FREQUENCY HEATING
PLASMA HEATING
RESONANCE
STELLARATORS
THERMONUCLEAR DEVICES
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production
700108 - Fusion Energy- Plasma Research- Wave Phenomena