Poloidal magnetic field measurements on TEXT using the Zeeman current profile diagnostic

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

OSTI ID:5209270

West, W P; Thomas, D M

The Zeeman current-density profile diagnostic system installed on TEXT has observed the polarization shift of the ..pi..-line of the Zeeman split Li D lines due to the poloidal magnetic fields. The Li is injected into the plasma as a 95-keV neutral beam, and a cw dye laser is used to measure polarization shifts. The laser is tuned into resonance with the ..pi..-line and the polarization vector of the laser is rotated at 50-kHz using an electro-optic technique. The resulting 100-kHz laser-induced fluorescence signal is phase analyzed in order to observe the polarization shifts due to poloidal field. The Li beam intensity into the tokamak is approximately 1 mA and the dye laser intensity is 1 W at 3 GHz bandwidth. The diagnostic system and these early results will be discussed.

• Research Organization: GA Technologies Inc., San Diego, CA
• DOE Contract Number: AC03-84ER53158
• OSTI ID: 5209270
• Report Number(s): CONF-840922-
• Conference Information: Journal Name: Rev. Sci. Instrum.; (United States) Journal Volume: 56:5
• Country of Publication: United States
• Language: English

Related Subjects

440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CLOSED PLASMA DEVICES
DESIGN
DYE LASERS
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
LASER SPECTROSCOPY
LASERS
LIQUID LASERS
MAGNETIC FIELDS
PERFORMANCE
PLASMA DIAGNOSTICS
POLARIZATION
SPECTROSCOPY
TEXT DEVICES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
ZEEMAN EFFECT