Calibration of space-resolving VUV and soft X-ray spectrographs for plasma diagnostics.
Calibration of space-resolving VUV and soft X-ray spectrographs for plasma diagnostics.
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DOI：
10.1107/s090904959701604x
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发表时间：
1998-05
影响因子：
2.5
通讯作者：
M. Yoshikawa;N. Yamaguchi;T. Aota;K. Ikeda;Y. Okamoto;K. Yatsu;T. Tamano
中科院分区：
文献类型：
--
作者：
M. Yoshikawa;N. Yamaguchi;T. Aota;K. Ikeda;Y. Okamoto;K. Yatsu;T. Tamano
真空紫外 (VUV) 和软 X 射线测量是诊断聚变研究中使用的磁约束等离子体中杂质的重要手段。最近，通过使用具有不同间距凹槽的像差校正凹面光栅构建了空间和时间分辨平场 VUV (150-1050 A) 和软 X 射线 (20-350 A) 光谱仪，这在微通道板增强探测器上提供了广泛的同步光谱覆盖范围。校准实验已在高能加速器研究组织光子工厂的光束线 11A 和 11C 上进行。 VUV 光谱仪的相对效率已针对光谱仪中的 P 偏振几何形状进行了测量。在软 X 射线光谱仪中，已经获得了沿凹槽方向光栅上几个不同照射点以及两种（S 和 P）偏振几何形状的效率。
Vacuum ultraviolet (VUV) and soft X-ray measurements are important means of diagnosing impurities in magnetically confined plasmas used in fusion research. Recently, space- and time-resolving flat-field VUV (150-1050 A) and soft X-ray (20-350 A) spectrographs have been constructed by using aberration-corrected concave gratings with varied-spacing grooves which give a wide simultaneous spectral coverage on a microchannel-plate intensified detector. Calibration experiments have been performed at beamlines 11A and 11C at the Photon Factory of the High Energy Accelerator Research Organization. The relative efficiency of the VUV spectrograph has been measured for P-polarization geometry in the spectrograph. In the soft X-ray spectrograph, efficiencies have been obtained for several different points of irradiation on the grating along the groove direction and for two (S and P) polarization geometries.