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

Journal Article · Mon Sep 15 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4896047· OSTI ID:22314275

Liu, X.; Zhao, H. L.; Li, E. Z.; Han, X.; Ti, A.; Hu, L. Q.; Zhang, X. D. ^[1]; Domier, C. W.; Luhmann, N. C. ^[2]

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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)

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.

• OSTI ID: 22314275
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

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