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

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4729671· OSTI ID:22093819

Hangyu, Zhou; Zhengying, Cui; Bingzhong, Fu; Ping, Sun; Yadong, Gao; Yuan, Xu; Ping, Lu; Qingwei, Yang; Xuru, Duan ^[1]; Morita, Shigeru; Goto, Motoshi; Chunfeng, Dong ^[2]

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1. Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China)
2. National Institute for Fusion Science, Toki, Gifu 509-5292 (Japan)

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.

• OSTI ID: 22093819
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

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