TFTR Michelson interferometer electron cyclotron emission diagnostic

Journal Article · Wed May 01 04:00:00 EDT 1985 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1138044· OSTI ID:5594510

Stauffer, F J; Boyd, D A; Cutler, R C; McCarthy, M P

In July 1984, a Fourier transform spectrometer employing a fast-scanning Michelson interferometer began operating on TFTR. This diagnostic system can measure the electron cyclotron emission spectrum 72 times per s with a time resolution of 11 ms and a spectral resolution of 3.6 GHz. The initial operating spectral range is 75--540 GHz, which is adequate for measuring the first three cyclotron harmonics at present TFTR magnetic field levels. The range can be extended easily to 75--1080 GHz in order to accommodate increases in toroidal magnetic field or to study superthermal ECE. The measured spectra are absolutely calibrated using a liquid nitrogen cooled blackbody reference source. The second harmonic feature of each spectrum is used to calculate the absolute electron temperature profile.

• Research Organization: Laboratory for Plasma and Fusion Energy Studies, University of Maryland, College Park, Maryland 20742
• OSTI ID: 5594510
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 56:5; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CALIBRATION
CYCLOTRON RESONANCE
DATA
ELECTROMAGNETIC RADIATION
ELECTRON CYCLOTRON-RESONANCE
EMISSION SPECTRA
EXPERIMENTAL DATA
FAR INFRARED RADIATION
FREQUENCY RANGE
GHZ RANGE
HARMONICS
INFORMATION
INFRARED RADIATION
INTERFEROMETERS
MEASURING INSTRUMENTS
MICHELSON INTERFEROMETER
MICROWAVE RADIATION
NUMERICAL DATA
OSCILLATIONS
PLASMA DIAGNOSTICS
RADIATIONS
RESOLUTION
RESONANCE
SPECTRA
SPECTRAL RESPONSE
TFTR TOKAMAK
THERMONUCLEAR REACTORS
TIME RESOLUTION
TIMING PROPERTIES
TOKAMAK TYPE REACTORS