A 16-channel heterodyne electron cyclotron emission radiometer on J-TEXT.
Rev Sci Instrum
; 83(10): 10E313, 2012 Oct.
Article
em En
| MEDLINE
| ID: mdl-23126973
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.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article