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Title: Absolute sensitivity calibration of vacuum and extreme ultraviolet spectrometer systems and Z{sub eff} measurement based on bremsstrahlung continuum in HL-2A tokamak

Abstract

A grazing-incidence flat-field extreme ultraviolet (EUV) spectrometer has been newly developed in HL-2A tokamak. Typical spectral lines are observed from intrinsic impurities of carbon, oxygen, iron, and extrinsic impurity of helium in the wavelength range of 20 A-500 A. Bremsstrahlung continuum is measured at different electron densities of HL-2A discharges to calibrate absolute sensitivity of the EUV spectrometer system and to measure effective ionic charge, Z{sub eff}. The sensitivity of a vacuum ultraviolet (VUV) spectrometer system is also absolutely calibrated in overlapped wavelength range of 300 A-500 A by comparing the intensity between VUV and EUV line emissions.

Authors:
; ; ; ; ; ; ; ;  [1]; ; ;  [2]
  1. Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China)
  2. National Institute for Fusion Science, Toki, Gifu 509-5292 (Japan)
Publication Date:
OSTI Identifier:
22093819
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 83; Journal Issue: 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BREMSSTRAHLUNG; CALIBRATION; CARBON; ELECTRIC DISCHARGES; EMISSION; EXTREME ULTRAVIOLET RADIATION; FAR ULTRAVIOLET RADIATION; HELIUM; HL-2A TOKAMAK; OXYGEN; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA IMPURITIES; SENSITIVITY; SPECTROMETERS

Citation Formats

Hangyu, Zhou, Zhengying, Cui, Bingzhong, Fu, Ping, Sun, Yadong, Gao, Yuan, Xu, Ping, Lu, Qingwei, Yang, Xuru, Duan, Morita, Shigeru, Goto, Motoshi, and Chunfeng, Dong. Absolute sensitivity calibration of vacuum and extreme ultraviolet spectrometer systems and Z{sub eff} measurement based on bremsstrahlung continuum in HL-2A tokamak. United States: N. p., 2012. Web. doi:10.1063/1.4729671.
Hangyu, Zhou, Zhengying, Cui, Bingzhong, Fu, Ping, Sun, Yadong, Gao, Yuan, Xu, Ping, Lu, Qingwei, Yang, Xuru, Duan, Morita, Shigeru, Goto, Motoshi, & Chunfeng, Dong. Absolute sensitivity calibration of vacuum and extreme ultraviolet spectrometer systems and Z{sub eff} measurement based on bremsstrahlung continuum in HL-2A tokamak. United States. https://doi.org/10.1063/1.4729671
Hangyu, Zhou, Zhengying, Cui, Bingzhong, Fu, Ping, Sun, Yadong, Gao, Yuan, Xu, Ping, Lu, Qingwei, Yang, Xuru, Duan, Morita, Shigeru, Goto, Motoshi, and Chunfeng, Dong. 2012. "Absolute sensitivity calibration of vacuum and extreme ultraviolet spectrometer systems and Z{sub eff} measurement based on bremsstrahlung continuum in HL-2A tokamak". United States. https://doi.org/10.1063/1.4729671.
@article{osti_22093819,
title = {Absolute sensitivity calibration of vacuum and extreme ultraviolet spectrometer systems and Z{sub eff} measurement based on bremsstrahlung continuum in HL-2A tokamak},
author = {Hangyu, Zhou and Zhengying, Cui and Bingzhong, Fu and Ping, Sun and Yadong, Gao and Yuan, Xu and Ping, Lu and Qingwei, Yang and Xuru, Duan and Morita, Shigeru and Goto, Motoshi and Chunfeng, Dong},
abstractNote = {A grazing-incidence flat-field extreme ultraviolet (EUV) spectrometer has been newly developed in HL-2A tokamak. Typical spectral lines are observed from intrinsic impurities of carbon, oxygen, iron, and extrinsic impurity of helium in the wavelength range of 20 A-500 A. Bremsstrahlung continuum is measured at different electron densities of HL-2A discharges to calibrate absolute sensitivity of the EUV spectrometer system and to measure effective ionic charge, Z{sub eff}. The sensitivity of a vacuum ultraviolet (VUV) spectrometer system is also absolutely calibrated in overlapped wavelength range of 300 A-500 A by comparing the intensity between VUV and EUV line emissions.},
doi = {10.1063/1.4729671},
url = {https://www.osti.gov/biblio/22093819}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 83,
place = {United States},
year = {Mon Oct 15 00:00:00 EDT 2012},
month = {Mon Oct 15 00:00:00 EDT 2012}
}