Fast ion millimeter wave collective Thomson scattering diagnostics on TEXTOR and ASDEX upgrades
Fast ion millimeter wave collective Thomson scattering diagnostics on TEXTOR and ASDEX upgrades
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TEXTOR 和 ASDEX 升级上的快离子毫米波集体汤姆森散射诊断
DOI：
10.1063/1.1779611
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发表时间：
2004
影响因子：
1.6
通讯作者：
E. Westerhof
中科院分区：
文献类型：
--
作者：
S. Michelsen;S. Korsholm;H. Bindslev;F. Meo;P. Michelsen;E. Tsakadze;J. Egedal;P. Woskov;J. Hoekzema;F. Leuterer;E. Westerhof
本文介绍了TEXTOR和ASDEX升级版中用于测量快离子的集体汤姆逊散射（CTS）诊断系统。这两个系统都使用回旋管产生的毫米波作为探测辐射，散射辐射用TEXTOR的40个光谱通道和ASDEX升级的50个光谱通道的外差接收器检测。探头和接收器的天线方向图都是可操纵的，它们决定了测量体积的大小和位置，以及分辨出的快离子速度的方向。对于由波导和准光镜组成的过模传输线，天线方向图取决于整个传输线的对准。通过插入准光学镜中的小光学镜中继可见激光束来辅助对准。
Collective Thomson scattering (CTS) diagnostic systems for measuring fast ions in TEXTOR and ASDEX Upgrade are described in this article. Both systems use millimeter waves generated by gyrotrons as probing radiation and the scattered radiation is detected with heterodyne receivers having 40 spectral channels at TEXTOR and 50 spectral channels at ASDEX Upgrade. The antenna patterns of probe and receiver, both steerable, determine size and location of the measuring volume, and the direction of the resolved fast ion velocity. With overmoded transmission lines, consisting of waveguides and quasioptical mirrors, the antenna patterns depend on the alignment of the entire transmission line. Alignment is aided by visible laser beams relayed by small optical mirrors, inserted in the quasioptical mirrors.