A two color millimeter-wave interferometer for the measurement of line integral electron density on large helical device
A two color millimeter-wave interferometer for the measurement of line integral electron density on large helical device
复制标题
大型螺旋装置线积分电子密度测量的双色毫米波干涉仪
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
R. Wylde
中科院分区：
文献类型：
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作者：
K. Kawahata;Kokichi Tanaka;Y. Ito;A. Ejiri;R. Wylde
1998年1月，日本国立聚变科学研究所在Toki市建造了大型螺旋装置（LHD）（R=3.9 m，ap=0.65 m，B=3-4 T）。LHD是一种Torsatron/Heliotron型装置，具有螺距参数为l/m=2/10的超导螺旋绕组和三组超导极向线圈。研制了一台双色毫米波干涉仪，用于测量铲运机水平中平面上的线积分电子密度。为了克服在长脉冲等离子体（10-1800秒）的传输路径长度（100米）的变化的影响，我们已经应用了双色干涉在140和285 GHz。
In the National Institute for Fusion Science, the large helical device (LHD) (R=3.9 m, ap=0.65 m, B=3–4 T) was constructed in Toki City on January, 1998. The LHD is a torsatron/heliotron type device with a superconducting helical winding of pitch parameters of l/m=2/10 and three sets of superconducting poloidal coils. A two color millimeter-wave interferometer has been developed for the measurement of line integral electron density on the horizontal midplane of the LHD. To overcome the effects of the change in the transmission path length (∼100 m) during long pulse plasmas (10–1800 s), we have applied two color interferometry at 140 and 285 GHz.