Divertor Stray Light Analysis in JET-ILW and Implications for the H-alpha Diagnostic in ITER

V S Neverov,M Stamp, A G Alekseev,S Brezinsek,A V Gorshkov,M Von Hellermann, M B Kadomtsev,V M Kotov,A S Kukushkin, M G Levashova,S Lisgo,V S Lisitsa,V A Shurygin,Evgeny Alexandrovitch Veshchev,D K Vukolov,K Yu Vukolov,Jet Efda Contributors

AIP Conference Proceedings（2014）

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摘要

We report on the first results for the spectrum of divertor stray light (DSL) and the signal-to-background ratio for D-alpha light emitted from the far SOL and divertor in JET in the recent ITER-like wall (ILW) campaign. The results support the expectation of a strong impact of DSL upon the H-alpha (and Visible Light) Spectroscopy Diagnostic in ITER.

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关键词

Balmer-alpha spectral line,far scrape-off layer,divertor stray light,signal-to-background ratio,JET,ITER

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