Community Research and Development Information Service - CORDIS

Abstract

The principle of LIDAR Thomson scattering has proved a valuable tool at JET. In connection with the new pumped divertor at JET, a new LIDAR scattering system is being installed to diagnose the divertor plasma. The new system requires better spatial resolution than the present system and will therefore make use of a streak camera for detection, which can be used over a shorter measurement range. Recent experiments in the plasma edge were conducted to verify this technique. One of the weaknesses of the present system has been the relatively low repetition rate. Two new ruby lasers with higher repetition rate will be employed in the JET LIDAR scattering systems in the future. Particular emphasis will be placed on describing the laser using stimulated Brillouin scattering for pulse compression. The implications for ITER are discussed.

Additional information

Authors: NIELSEN P, JET Joint Undertaking, Abingdon, Oxon. (GB);GOWERS C, JET Joint Undertaking, Abingdon, Oxon. (GB);SCHUNKE B, JET Joint Undertaking, Abingdon, Oxon. (GB);NIZIENKO Y, The Troitsk Institute for Innovation and Fusion Research, Moscow (SU)
Bibliographic Reference: Report: JET-P(93)62 EN (1993) 9 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199311232 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en