Density profile measurement using a multichannel difluoromethane laser interferometer system on ATF

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:5433364

Ma, C H; Baylor, L R; Hutchinson, D P; Murakami, M; Wilgen, J B

Recent results of the electron density profile measurement on the Advanced Toroidal Facility (ATF) are presented. A multichannel difluoromethane laser interferometer system has been routinely employed to study density evolution in ECH as well as neutral-beam-heated plasma discharges with gas fueling and pellet injection. A chordal inversion code has been developed, and has been used successfully to reconstruct the asymmetric density profiles. Cross-correlation of density profiles measurements among FIR interferometer, Thomson scattering, the heavy-ion beam probe, and the fast reciprocating Langmuir probe has been achieved. Radial density profiles measured by the four diagnostics are generally in good agreement and are hollow profiles under most experimental conditions.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5433364
• Report Number(s): CONF-920362-23; ON: DE92011691
• Resource Relation: Conference: 9. topical conference on high-temperature plasma diagnostics, Santa Fe, NM (United States), 15-19 Mar 1992
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ATF TORSATRON
INTERFEROMETRY
BEAM INJECTION HEATING
CARBON DIOXIDE LASERS
ECR HEATING
ELECTRON DENSITY
INTERFEROMETERS
LANGMUIR PROBE
PLASMA DIAGNOSTICS
THOMSON SCATTERING
CLOSED PLASMA DEVICES
ELECTRIC PROBES
GAS LASERS
HEATING
HIGH-FREQUENCY HEATING
INELASTIC SCATTERING
LASERS
MEASURING INSTRUMENTS
PLASMA HEATING
PROBES
SCATTERING
STELLARATORS
THERMONUCLEAR DEVICES
TORSATRON STELLARATORS
700320* - Plasma Diagnostic Techniques & Instrumentation- (1992-)