Electron cyclotron resonance heating transmission line and launching system for the Wendelstein VII-AS stellarator
Journal Article
·
· Fusion Technology; (USA)
OSTI ID:6681951
- Max-Planck-Institut fuer Plasmaphysik, Garching (Germany, F.R.)
- Stuttgart Univ. (Germany, F.R.). Inst. fuer Plasmaforschung
A 70-GHz electron cyclotron resonance heating (ECRH) system (4 {times} 0.2 MW for 3 s and 0.2 MW for 0.1 s) has been installed on the Wendelstein VII-AS stellarator for plasma buildup, heating, and current drive. Five commercially available gyrotrons, each delivering 0.2-MW radio-frequency (rf) output power, serve as the ECRH sources. The microwaves are transmitted to the stellarator by conventional oversized waveguides, and they convert the gyrotron output mode to a linearly polarized Gaussian free-space mode, which is launched to the plasma at arbitrary poloidal and toroidal angles by a quasi-optical launcher. The transmission line and launching system as well as the related rf diagnostics are discussed in detail. Experimental results on heating and current drive obtained with various kinds of microwave launching are presented.
- OSTI ID:
- 6681951
- Journal Information:
- Fusion Technology; (USA), Journal Name: Fusion Technology; (USA) Vol. 17:1; ISSN 0748-1896; ISSN FUSTE
- Country of Publication:
- United States
- Language:
- English
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·
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· AIP Conference Proceedings (American Institute of Physics); (USA)
·
OSTI ID:6476787
Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
700200 -- Fusion Energy-- Fusion Power Plant Technology
AMPLIFIERS
BUILDUP
CLOSED PLASMA DEVICES
CURRENT-DRIVE HEATING
ECR HEATING
ELECTRIC HEATING
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENT PLANNING
HEATING
HIGH-FREQUENCY HEATING
JOULE HEATING
LAUNCHING
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
PLANNING
PLASMA
PLASMA DIAGNOSTICS
PLASMA HEATING
RESISTANCE HEATING
RF SYSTEMS
STELLARATORS
THERMONUCLEAR DEVICES
WAVEGUIDES
WENDELSTEIN-7 STELLARATOR
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
700200 -- Fusion Energy-- Fusion Power Plant Technology
AMPLIFIERS
BUILDUP
CLOSED PLASMA DEVICES
CURRENT-DRIVE HEATING
ECR HEATING
ELECTRIC HEATING
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENT PLANNING
HEATING
HIGH-FREQUENCY HEATING
JOULE HEATING
LAUNCHING
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
PLANNING
PLASMA
PLASMA DIAGNOSTICS
PLASMA HEATING
RESISTANCE HEATING
RF SYSTEMS
STELLARATORS
THERMONUCLEAR DEVICES
WAVEGUIDES
WENDELSTEIN-7 STELLARATOR