Title :
Status of far infrared tangential interferometry/polarimetry (FIReTIP) on NSTX
Author :
Park, H.K. ; Deng, B. ; Domier, C.W. ; Lee, K.C. ; Luhmann, N.C., Jr.
Author_Institution :
Plasma Phys. Lab., Princeton Univ., NJ, USA
Abstract :
The influence of paramagnetism and diamagnetism will significantly alter the vacuum toroidal magnetic field in spherical torus. Therefore, plasma parameters dependent upon B/sub T/ such as the q-profile and local /spl beta/ value need an independent measurement of B/sub T/(r,t). The multi-chord tangential far infrared interferometer/polarimeter (FIReTIP) system currently under development for National Spherical Torus Experiment (NSTX) will provide temporally and radially resolved toroidal field profile [B/sub T/(r,t)] and 2D electron density profile [S(r,t)] data. Two channel interferometer will be operational this year and full system will be ready by 2002.
Keywords :
Faraday effect; Tokamak devices; light interferometers; light interferometry; magnetic field measurement; measurement by laser beam; plasma density; plasma diagnostics; plasma toroidal confinement; polarimeters; polarimetry; submillimetre wave measurement; 2D electron density profile; FIR tangential interferometry/polarimetry; Faraday rotation; NSTX tokamak; laser system; multi-chord system; plasma diagnostics; radially resolved toroidal field profile; spherical torus; temporally resolved toroidal field profile; two-channel interferometer; vacuum toroidal magnetic field; Magnetic confinement; Magnetic field measurement; Phase shifting interferometry; Plasma confinement; Plasma density; Plasma measurements; Plasma waves; Polarimetry; Polarization; Toroidal magnetic fields;
Conference_Titel :
Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-6513-5
DOI :
10.1109/ICIMW.2000.893094
