A novel X-ray spectrometer for plasma hot spot diagnosis

作者：Shi, Jun^*; Guo, Yongchao; Xiao, Shali; Yang, Zuhua; Qian, Feng; Cao, LeiFeng; Gu, Yuqiu

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2017, 866: 72-75.

DOI：10.1016/j.nima.2017.05.030

• Plasma
• Elliptical crystal
• X-ray spectrum
• X-ray imaging

A novel X-ray spectrometer is designed to diagnose the different conditions in plasmas. It can provide both X-ray spectroscopy and plasma image information simultaneously. Two pairs of elliptical crystal analyzers are used to measure the X-ray spectroscopy in the range of 2-20 keV. The pinhole imaging system coupled with gated micro-channel plate(MCP) detectors are developed, which allows 20 images to be collected in a single individual experiment. The experiments of measuring spectra were conducted at "Shenguang-II upgraded laser'' in China Academy of Engineering Physics to demonstrate the utility of the spectrometer. The X-ray spectroscopy information was obtained by the image plate(IP). The hot spot imaging experiments were carried out at `` Shenguang-III prototype facility''. We have obtained the hot sport images with the spectrometer, and the signal to noise ratio of 30 similar to 40 is observed.

• 出版日期2017-9-11
• 单位中国工程物理研究院; 重庆大学; 中国工程物理研究院激光聚变研究中心