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A line-of-sight electron cyclotron emission receiver for electron cyclotron resonance heating feedback control of tearing modes

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Abstract

An electron cyclotron emission (ECE) receiver inside the electron cyclotron resonance heating (ECRH) transmission line has been brought into operation. The ECE is extracted by placing a quartz plate acting as a Fabry-Perot interferometer under an angle inside the electron cyclotron wave (ECW) beam. ECE measurements are obtained during high power ECRH operation. This demonstrates the successful operation of the diagnostic and, in particular, a sufficient suppression of the gyrotron component preventing it from interfering with ECE measurements. When integrated into a feedback system for the control of plasma instabilities this line-of-sight ECE diagnostic removes the need to localize the instabilities in absolute coordinates. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2976665]

Year of Publication
2008
Journal
Review of Scientific Instruments
Volume
79
Number
9
Number of Pages
12
Date Published
Sep
Type of Article
Article
ISBN Number
0034-6748
Accession Number
ISI:000260291800013
URL
PId
682d4d308259fdd96febfce1a0095c11
Alternate Journal
Rev. Sci. Instrum.
Journal Article
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