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Title: Characterization and calibration of 8-channel E-band heterodyne radiometer system for SST-1 tokamak

An 8-channel E-band heterodyne radiometer system (74–86 GHz) is designed, characterized, and calibrated to measure the radial electron temperature profile by measuring Electron Cyclotron Emission spectrum at SST-1 Tokamak. The developed radiometer has a noise equivalent temperature of 1 eV and sensitivity of 5 × 10{sup 9} V/W. In order to precisely measure the absolute value of electron temperature, a calibration measurement of the radiometer system is performed using hot-cold Dicke switch method, which confirms the system linearity.
Authors:
; ; ;  [1]
  1. Institute for Plasma Research, Bhat, Gandhinagar, Gujarat 382428 (India)
Publication Date:
OSTI Identifier:
22254892
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 5; 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; CYCLOTRONS; ELECTRON TEMPERATURE; EMISSION SPECTRA; RADIOMETERS; SENSITIVITY; SWITCHES; TOKAMAK DEVICES