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Title: Note: Upgrade of electron cyclotron emission imaging system and preliminary results on HL-2A tokamak

The electron cyclotron emission imaging system on the HL-2A tokamak has been upgraded to 24 (poloidally) × 16 (radially) channels based on the previous 24 × 8 array. The measurement region can be flexibly shifted due to the independence of the two local oscillator sources, and the field of view can be adjusted easily by changing the position of the zoom lenses. The temporal resolution is about 2.5 μs and the achievable spatial resolution is 1 cm. After laboratory calibration, it was installed on HL-2A tokamak in 2014, and the local 2D mode structures of MHD activities were obtained for the first time.
Authors:
; ; ; ; ; ; ; ; ; ; ;  [1] ; ;  [2] ;  [3]
  1. Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China)
  2. Department of Electrical and Computer Engineering, University of California, Davis, California 95616 (United States)
  3. School of Physics and Chemistry, Xihua University, Chengdu 610039 (China)
Publication Date:
OSTI Identifier:
22483272
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 7; Other Information: (c) 2015 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; CYCLOTRONS; ELECTRONS; HL-2A TOKAMAK; LENSES; MAGNETOHYDRODYNAMICS; SPATIAL RESOLUTION