Design of a correlation electron cyclotron emission diagnostic for Alcator C-Mod

Journal Article · Mon Oct 15 04:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4731750· OSTI ID:22093922

Sung, C.; White, A. E.; Irby, J. H.; Leccacorvi, R.; Vieira, R.; Oi, C. Y. ^[1]; Peebles, W. A.; Nguyen, X. ^[2]

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1. Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139 (United States)
2. University of California, Los Angeles, California 90098 (United States)

A correlation electron cyclotron emission (CECE) diagnostic has been installed in Alcator C-Mod. In order to measure electron temperature fluctuations, this diagnostic uses a spectral decorrelation technique. Constraints obtained with nonlinear gyrokinetic simulations guided the design of the optical system and receiver. The CECE diagnostic is designed to measure temperature fluctuations which have k{sub {theta}}{<=} 4.8 cm{sup -1} (k{sub {theta}}{rho}{sub s} < 0.5) using a well-focused beam pattern. Because the CECE diagnostic is a dedicated turbulence diagnostic, the optical system is also flexible, which allows for various collimating lenses and antenna to be used. The system overview and the demonstration of its operability as designed are presented in this paper.

• OSTI ID: 22093922
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALCATOR DEVICE
BEAMS
CYCLOTRON RADIATION
DESIGN
ELECTRON EMISSION
ELECTRON TEMPERATURE
FLUCTUATIONS
NOISE
OPTICAL SYSTEMS
PLASMA
SIMULATION
TEMPERATURE MEASUREMENT
TURBULENCE