ASSESSMENT TECHNIQUES FOR MEASUREMENT OF TARGET EROSION REDEPOSITION IN LARGE TOKAMAKS

Authors
COAD JP BEHRISCH R DEKOCK L KOCH A WESCHENFELDER F WIENHOLD P WILHELM R
Citation
Jp. Coad et al., ASSESSMENT TECHNIQUES FOR MEASUREMENT OF TARGET EROSION REDEPOSITION IN LARGE TOKAMAKS, Journal of nuclear materials, 200(3), 1993, pp. 360-365
Citations number
11
Categorie Soggetti
Nuclear Sciences & Tecnology","Metallurgy & Mining","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
200
Issue
3
Year of publication
1993
Pages
360 - 365
Database
ISI
SICI code
0022-3115(1993)200:3<360:ATFMOT>2.0.ZU;2-D
Abstract
Two possible techniques for the measurement of erosion/redeposition in the new JET divertor have been assessed; colour fringe analysis (CFA) and speckle interferometry. CFA is a simple technique in which the ta rget is viewed with a colour camera, and can study optically transpare nt deposited films up to 1 mum in thickness. Speckle interferometry is a powerful technique for following changes in surface topology, but i ts sensitivity of > 1 mum makes it more ideally suited to the next gen eration of tokamaks.