Design of a multichannel polychromator for KTX Thomson scattering diagnostic

被引：1

作者：

Peng, Yuan ^{[1
]}

Jian, Zheng ^{[1
]}

Weiqiang, Tan ^{[1
]}

Peng, Wang ^{[1
]}

Jinlin, Xie ^{[1
]}

Tao, Lan ^{[1
]}

Hong, Li ^{[1
]}

Weixing, Ding ^{[1
]}

Wandong, Liu ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Plasma Phys & Fus Engn, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF INSTRUMENTATION | 2023年 / 18卷 / 04期

关键词：

Nuclear instruments and methods for hot plasma diagnostics; Plasma diagnostics-interferometry; spectroscopy and imaging; SYSTEM; COMPACT;

D O I：

10.1088/1748-0221/18/04/P04027

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A polychromator is designed based on the transmission volume phase holographic grating spectrometer coupled with avalanched photon diodes through fiber bundle and has been successfully implemented on the Keda Torus eXperiment [Plasma Phys. Control. Fusion 56 (2014) 094009] Thomson scattering system. The polychromator is operated with a 1064 nm laser, and the designed spectral range is from about 1000 nm to 1100 nm. The spectral channels have been optimized with a five-channel design to lower the estimated error of the electron temperature and density within 5% and 3% respectively when the temperature is around 100 eV. With a calibration method about the ratio of the channel average responses using bremsstrahlung radiation, we obtain an electron temperature of 7 eV in a typical experiment with low plasma currents.

引用

页数：19

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