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Title: Wavelength calibration of x-ray imaging crystal spectrometer on Joint Texas Experimental Tokamak

The wavelength calibration of x-ray imaging crystal spectrometer is a key issue for the measurements of plasma rotation. For the lack of available standard radiation source near 3.95 Å and there is no other diagnostics to measure the core rotation for inter-calibration, an indirect method by using tokamak plasma itself has been applied on joint Texas experimental tokamak. It is found that the core toroidal rotation velocity is not zero during locked mode phase. This is consistent with the observation of small oscillations on soft x-ray signals and electron cyclotron emission during locked-mode phase.
Authors:
; ; ; ; ; ; ;  [1] ; ;  [2]
  1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan (China)
  2. National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22308947
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CALIBRATION; CRYSTALS; ELECTRON CYCLOTRON-RESONANCE; EMISSION; MODE LOCKING; OSCILLATIONS; PLASMA; RADIAL VELOCITY; RADIATION SOURCES; ROTATION; SOFT X RADIATION; TEXT DEVICES; WAVELENGTHS; X-RAY SPECTROMETERS