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000852730 1001_ $$00000-0001-8060-5701$$aHu, Zhenhua$$b0
000852730 245__ $$aLaser induced ablation spectroscopy for in situ characterization of the first wall on EAST tokamak
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000852730 520__ $$aPlasma-wall interaction (PWI) is a crucial issue for high-performance operation and first wall lifetime of future fusion reactors. An in situ measurement and the control of fuel retention in the vacuum-vessel will be an important aspect for the safe operation of nuclear fusion devices. Laser-Induced Ablation Spectroscopy (LIAS) is an attractive option with promising capabilities for in situ characterization of fuel retention and co-deposition during plasma discharges. In this work, an in situ LIAS wall diagnostic system is developed for real-time during discharge diagnosis of the first wall on the EAST superconducting tokamak. A dedicated timing system, which offers the function of multiple temporal settings with high time resolution for LIAS measurement during long-pulse discharges, is successfully commissioned. The experimental setup of the LIAS system for the characterization of the first wall on EAST is presented in detail. First LIAS results obtained in EAST during high power discharges are presented. The results indicate that in situ measurements of deposition, co-deposition and dynamic retention are possible.
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000852730 7001_ $$0P:(DE-Juel1)7885$$aGierse, Niels$$b1
000852730 7001_ $$0P:(DE-Juel1)171238$$aLi, Cong$$b2
000852730 7001_ $$0P:(DE-Juel1)169485$$aOelmann, Jannis$$b3
000852730 7001_ $$00000-0003-0387-4961$$aZhao, Dongye$$b4
000852730 7001_ $$0P:(DE-Juel1)5089$$aTokar, Mikhail$$b5
000852730 7001_ $$0P:(DE-Juel1)166372$$aJiang, Xi$$b6
000852730 7001_ $$0P:(DE-Juel1)130112$$aNicolai, Dirk$$b7
000852730 7001_ $$0P:(DE-HGF)0$$aWu, Jing$$b8
000852730 7001_ $$0P:(DE-HGF)0$$aDing, Fang$$b9$$eCorresponding author
000852730 7001_ $$0P:(DE-Juel1)129976$$aBrezinsek, Sebastijan$$b10
000852730 7001_ $$0P:(DE-HGF)0$$aDing, Hongbin$$b11
000852730 7001_ $$0P:(DE-HGF)0$$aLuo, Guang-Nan$$b12
000852730 7001_ $$0P:(DE-Juel1)157640$$aLinsmeier, Christian$$b13
000852730 773__ $$0PERI:(DE-600)1492280-0$$a10.1016/j.fusengdes.2018.07.017$$gVol. 135, p. 95 - 101$$nPart A$$p95 - 101$$tFusion engineering and design$$v135$$x0920-3796$$y2018
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