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Electron temperature fluctuation measurement from ECE on TEXT-U.
- Source :
-
Review of Scientific Instruments . Oct92, Vol. 63 Issue 10, p4633. 3p. - Publication Year :
- 1992
-
Abstract
- The conceptual design and theory of diagnostics to measure electron temperature and density fluctuations using electron cyclotron emission (ECE) was proposed and a new, single-sightline ECE system with the heterodyne radiometer has been built for TEXT-U. This ECE system was designed to employ auto- and cross-correlation techniques. Calculations indicate that fluctuations as small as 0.2% in amplitude can be achieved from auto-correlation of the ECE signal. The cross-correlation technique, however, must be used to resolve the fluctuations in frequency. Auto- and cross-correlation between optically thick ECE channels will be used for our initial approach to electron temperature fluctuation measurement with the single-sightline ECE system. A description of the TEXT-U ECE system, investigation of the feasibility of this measurement, and the initial results of test, calibration, and operation are presented. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ELECTRON temperature
*ELECTRON distribution
Subjects
Details
- Language :
- English
- ISSN :
- 00346748
- Volume :
- 63
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Review of Scientific Instruments
- Publication Type :
- Academic Journal
- Accession number :
- 9787088
- Full Text :
- https://doi.org/10.1063/1.1143640