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Title: Absolute intensity calibration of the 32-channel heterodyne radiometer on experimental advanced superconducting tokamak

This paper presents the results of the in situ absolute intensity calibration for the 32-channel heterodyne radiometer on the experimental advanced superconducting tokamak. The hot/cold load method is adopted, and the coherent averaging technique is employed to improve the signal to noise ratio. Measured spectra and electron temperature profiles are compared with those from an independent calibrated Michelson interferometer, and there is a relatively good agreement between the results from the two different systems.
Authors:
; ; ; ; ; ; ;  [1] ; ;  [2]
  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)
  2. Department of Electrical and Computer Engineering, University of California at Davis, Davis, California 95616 (United States)
Publication Date:
OSTI Identifier:
22314275
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 9; 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; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CALIBRATION; COMPARATIVE EVALUATIONS; ELECTRON TEMPERATURE; HT-7U TOKAMAK; MICHELSON INTERFEROMETER; RADIOMETERS; SIGNAL-TO-NOISE RATIO; SPECTRA