A 16-channel heterodyne electron cyclotron emission radiometer on J-TEXT

descriptionPublicationkeyboard_double_arrow_right Article 05 Jul 2012 English Publisher:AIP PublishingJournal:Review of Scientific Instruments, volume 83 (issn: 0034-6748, eissn: 1089-7623,

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Authors: Z J, Yang; P E, Phillips; G, Zhuang; J S, Xiao; H, Huang; W L, Rowan; Z J, Wang;

doi: 10.1063/1.4732069

pmid: 23126973

A 16-channel heterodyne electron cyclotron emission radiometer on J-TEXT

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Abstract

To study equilibrium temporal dynamics and the mechanisms of magnetohydrodynamic instabilities, a 16-channel heterodyne electron cyclotron emission (ECE) radiometer has been developed to view the J-TEXT tokamak from the low field side. The ECE radiometer detects second-harmonic extraordinary mode in the frequency band of 94–125 GHz which corresponds to resonances from 1.8 T to 2.2 T. This ECE system consists of an ECE transmission line, a radio frequency unit, and two 8-channel intermediate frequency units. An in situ blackbody calibration source is applied for system calibration by comparison of hot and cold sources in order to provide an absolute temperature measurement.

Related Organizations

State Key Laboratory of Advanced Electromagnetic Engineering and Technology
China (People's Republic of)
The University of Texas at Austin
United States
Huazhong University of Science and Technology
China (People's Republic of)

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