Electron cyclotron measurements with the fast-scanning heterodyne radiometer on the tokamak fusion test reactor

Journal Article · Fri Aug 01 00:00:00 EDT 1986 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1138810· OSTI ID:5642271

Taylor, G; Efthimion, P C; McCarthy, M P; Fredd, E; Cutler, R C

Three fast-scanning heterodyne receivers, swept between 75 and 110, 110 and 170, and 170 and 210 GHz have measured electron cyclotron emission on the horizontal midplane of the tokamak fusion test reactor (TFTR) plasma. A second-harmonic microwave mixer in the 170--210-GHz receiver allows the use of a 75--110-GHz backward wave oscillator as a swept local oscillator. Electron temperature profile evolution data with a time resolution of 2 ms and a profile acquisition rate of 250 Hz will be presented for gas-fueled and pellet-fueled ohmic and neutral beam heated plasmas with toroidal fields up to 5.2 T. Recent results from a new swept-mode absolute calibration technique which can improve the accuracy and data collection efficiency during i-italicn-italic s-italici-italict-italicu-italic calibration will also be presented.

• Research Organization: Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08544
• OSTI ID: 5642271
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 57:8
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA DIAGNOSTICS
HETERODYNE RECEIVERS
RADIOMETERS
TFTR TOKAMAK
CYCLOTRON RADIATION
ELECTRON TEMPERATURE
ELECTRON CYCLOTRON-RESONANCE
FUEL PELLETS
GHZ RANGE 01-100
GHZ RANGE 100-1000
NEUTRAL ATOM BEAM INJECTION
BEAM INJECTION
BREMSSTRAHLUNG
CYCLOTRON RESONANCE
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY RANGE
GHZ RANGE
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
PELLETS
RADIATION DETECTORS
RADIATIONS
RADIO EQUIPMENT
RESONANCE
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
700102* - Fusion Energy- Plasma Research- Diagnostics