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A two-wavelength infrared interferometer/polarimeter system for CIT (Compact Ignition Tokamak)

Conference ·
OSTI ID:5233948
The results of a fasiblity study of a two-wavelength infrared interferometerpolarimeter system for measurements of electron density and plasma current profiles in the Compact Ignition Tokamak (CIT) are presented. The system utilizes CO/sub 2/ lasers at a wavelength of 10.6 ..mu..m, and water-vapor lasers at 28 ..mu..m. Both magneto-optic and electro-optic polarization-modulation techniques have been used to determine the sensitivity and time response of the polarimetry at 10.6 ..mu..m. Measurement of a simulated plasma Faraday rotation demonstrated a sensitivity of approximately 0.01)degree) for a CO/sub 2/ laser polarimeter with an electrooptic CdTe crystal modulator. 3 refs., 4 figs
Research Organization:
Oak Ridge National Lab., TN (USA)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
5233948
Report Number(s):
CONF-880364-12; ON: DE88007681
Country of Publication:
United States
Language:
English