Design study for the JET diagnostic systems Quasi-Continuous Laser Scattering
Abstract
The design study for a quasicontinuous Thomson scattering system for JET capable of measuring the electron temperature throughout the discharge time is reported. The arrangement is based on an 8 deg forward scattering geometry. Different possible laser systems are compared. The chosen laser is a 100 Hz repetition rate Q switched neodymium laser emitting at least 1 J unpolarized per pulse. Silicon avalanche photodiodes are used as detectors. The merits of these detection for scattering experiments are discussed and signal to noise considerations are given.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- January 1980
- Bibcode:
- 1980STIN...8114298H
- Keywords:
-
- Neodymium Lasers;
- Plasma Diagnostics;
- Q Switched Lasers;
- Thomson Scattering;
- Tokamak Devices;
- Avalanche Diodes;
- Electron Energy;
- Signal To Noise Ratios;
- Toroidal Plasmas;
- Lasers and Masers