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Real-time impedance matching system for ICRF heating in LHD
- Source :
-
Fusion Engineering & Design . Apr2008, Vol. 83 Issue 2/3, p245-248. 4p. - Publication Year :
- 2008
-
Abstract
- Abstract: In the Large Helical Device (LHD), long-pulse plasma experiments have been conducted using an ion cyclotron range of frequencies (ICRFs) heating system. Real-time impedance matching is necessary to keep injecting ICRF heating power into the plasma against the variation of the antenna impedance that changes gradually during a long-pulse plasma discharge. A feedback control system for the real-time impedance matching was constructed and utilized for long-pulse plasma discharges. As a component of the impedance matching device, liquid stub tuners were used. The reflected power ratio was reduced and kept sufficiently low by controlling the liquid heights during long-pulse plasma discharges, and the problem of the gradual increase in the reflected power was solved. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09203796
- Volume :
- 83
- Issue :
- 2/3
- Database :
- Academic Search Index
- Journal :
- Fusion Engineering & Design
- Publication Type :
- Academic Journal
- Accession number :
- 32033491
- Full Text :
- https://doi.org/10.1016/j.fusengdes.2008.01.017