Journal Article

FZJ-2021-01520

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Development of laser-based technology for the routine first wall diagnostic on the tokamak EAST: LIBS and LIAS

Hu, Z. ; Gierse, N. ; Li, C. (Corresponding author)FZJ* ; Liu, P. ; Zhao, D.FZJ* ; Sun, L. ; Oelmann, J.FZJ* ; Nicolai, D.FZJ* ; Wu, D.FZJ* ; Wu, J.FZJ* ; Mao, H. ; Ding, F. ; Brezinsek, S.FZJ* ; Liang, Y.FZJ* ; Ding, H.FZJ* ; Luo, G. ; Linsmeier, C.FZJ*

2017
The Royal Swedish Academy of Sciences Stockholm

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Please use a persistent id in citations: doi:10.1088/1402-4896/aa8650

Abstract: A laser based method combined with spectroscopy, such as laser-induced breakdown spectroscopy (LIBS) and laser-induced ablation spectroscopy (LIAS), is a promising technology for plasma-wall interaction studies. In this work, we report the development of in situ laser-based diagnostics (LIBS and LIAS) for the assessment of static and dynamic fuel retention on the first wall without removing the tiles between and during plasma discharges in the Experimental Advanced Superconducting Tokamak (EAST). The fuel retention on the first wall was measured after different wall conditioning methods and daily plasma discharges by in situ LIBS. The result indicates that the LIBS can be a useful tool to predict the wall condition in EAST. With the successful commissioning of a refined timing system for LIAS, an in situ approach to investigate fuel retention is proposed.

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Contributing Institute(s):

1. Plasmaphysik (IEK-4)

Research Program(s):

1. 174 - Plasma-Wall-Interaction (POF3-174) (POF3-174)

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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