A CO2 laser polarimeter for measurement of plasma current profile in Alcator C-Mod
Abstract
A multichannel infrared polarimeter system for measurement of the plasma current profile in Alcator C-Mod has been designed, constructed, and tested. The system utilizes a cw CO2 laser at a wavelength of 10.6 microns. An electro-optic polarization-modulation technique has been used to achieve the high sensitivity required for the measurement. The recent results of the measurements as well as the feasibility of its application on ITER are presented.
- Publication:
-
Presented at the 10th Topical Conference on High-Temperature Plasma Diagnostics
- Pub Date:
- 1994
- Bibcode:
- 1994htpd.confT...8M
- Keywords:
-
- Carbon Dioxide Lasers;
- Electron Density (Concentration);
- Infrared Lasers;
- Plasma Currents;
- Plasma Diagnostics;
- Polarimeters;
- Continuous Wave Lasers;
- Electro-Optics;
- Interferometers;
- Tokamak Devices;
- Lasers and Masers