The ICRH System Planned for Wendelstein 7-X

Journal Article · Mon Sep 26 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2098235· OSTI ID:20726321

Hartmann, D A; Birus, D; Wendorf, J; Wesner, F ^[1]

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1. Max-Planck Institute for Plasma Physics, 17493 Greifswald (Germany)

The Max-Planck Institute for Plasma Physics is presently building the stellarator experiment Wendelstein 7-X (W7-X) at Greifswald, Germany. First plasma operation in planned after 2010. The plasma will be heated primarily using electron cyclotron resonance heating (ECRH) at a magnetic field of B=2.5 T, but also using ion cyclotron resonance heating (ICRH) and neutral beam injection heating (NBI). The latter heating methods are necessary to study high beta discharges and fast ion confinement. The ICRF system is planned to consist of two radially movable antennas powered by two generators with an output power of 2 MW each. The antenna plasma load will be matched in real time to the generator impedance using ferrite loaded transmission line elements. In addition, 3dB couplers will passively protect the generators from RF power reflections during rapid changes of the antenna plasma load that are too fast for the ferrite matching system.

• OSTI ID: 20726321
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 787; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
BEAM INJECTION HEATING
ECR HEATING
FERRITE
HIGH-BETA PLASMA
ICR HEATING
IMPEDANCE
ION CYCLOTRON-RESONANCE
MAGNETIC FIELDS
OPERATION
PLASMA CONFINEMENT
POWER TRANSMISSION LINES
RF SYSTEMS
STELLARATORS