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Title: Design and characterization of a 32-channel heterodyne radiometer for electron cyclotron emission measurements on experimental advanced superconducting tokamak

A 32-channel heterodyne radiometer has been developed for the measurement of electron cyclotron emission (ECE) on the experimental advanced superconducting tokamak (EAST). This system collects X-mode ECE radiation spanning a frequency range of 104–168 GHz, where the frequency coverage corresponds to a full radial coverage for the case with a toroidal magnetic field of 2.3 T. The frequency range is equally spaced every 2 GHz from 105.1 to 167.1 GHz with an RF bandwidth of ∼500 MHz and the video bandwidth can be switched among 50, 100, 200, and 400 kHz. Design objectives and characterization of the system are presented in this paper. Preliminary results for plasma operation are also presented.
Authors:
; ; ; ; ;  [1] ; ;  [2]
  1. Institution of Plasma Physics, Chinese Academy of Sciences, P. O. Box 1126, Hefei, Anhui 230031 (China)
  2. Department of Electrical and Computer Engineering, University of California, Davis, California 95616 (United States)
Publication Date:
OSTI Identifier:
22308679
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 7; 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; DESIGN; ELECTRON CYCLOTRON-RESONANCE; ELECTRON EMISSION; GHZ RANGE; HT-7U TOKAMAK; KHZ RANGE; MAGNETIC FIELDS; MHZ RANGE; OPERATION; PLASMA; RADIOMETERS; RADIOWAVE RADIATION; TOROIDAL CONFIGURATION