کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
272926 | 505037 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Real-time impedance matching system for ICRF heating in LHD Real-time impedance matching system for ICRF heating in LHD](/preview/png/272926.png)
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.
Journal: Fusion Engineering and Design - Volume 83, Issues 2–3, April 2008, Pages 245–248