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

Journal Article · Tue Jul 15 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4891040· OSTI ID:22308679

Han, X.; Liu, X.; Li, E. Z.; Hu, L. Q.; Gao, X. ^[1]; Domier, C. W.; Luhmann, N. C. ^[2]

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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)

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.

• OSTI ID: 22308679
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 7; 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
DESIGN
ELECTRON CYCLOTRON-RESONANCE
ELECTRON EMISSION
GHZ RANGE
HT-7U TOKAMAK
KHZ RANGE
MAGNETIC FIELDS
MHZ RANGE
OPERATION
PLASMA
RADIOMETERS
RADIOWAVE RADIATION
TOROIDAL CONFIGURATION