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Repetitive cleaning of a stainless steel first mirror using radio frequency plasma
Peng, Jiao1,2; Yan, Rong1; Ding, Rui1; Chen, Junling1; Zhu, Dahuan1; Zhang, Zengming3
2017-10-01
发表期刊PLASMA SCIENCE & TECHNOLOGY
卷号19期号:10
摘要First mirrors (FMs) are crucial components of optical diagnostic systems in present-day tokamaks and future fusion reactors. Their lifetimes should be extremely limited due to their proximity to burning plasma, greatly influencing the safe operation of corresponding diagnostics. Repetitive cleaning is expected to provide a solution to the frequent replacement of contaminated FMs, thus prolonging their lifetimes. Three repetitive cleaning cycles using radio frequency plasma were applied to stainless steel (SS) FM samples, to evaluate the change of the mirrors' optical properties and morphology during each cycle. Amorphous carbon films were deposited on mirror surfaces under identical conditions in three cycles. In three cycles with identical cleaning parameters, the total reflectivity was restored at up to 95%. Nevertheless, with successive cleaning cycles, the FM surfaces gradually appeared to roughen due to damage to the grain boundaries. Correspondingly, the diffuse reflectivity increased from a few percent to 20% and 27% after the second and third cycles. After optimizing the cleaning parameters of the second and third cycles, the roughness showed a significant decrease, and simultaneously the increase of diffuse reflectivity was remarkably improved.
文章类型Article
关键词First Mirror Stainless Steel Lifetime Repetitive Cleaning Reflectivity
WOS标题词Science & Technology ; Physical Sciences
资助者National Magnetic Confinement Fusion Science Program of China(2013GB105003 ; National Magnetic Confinement Fusion Science Program of China(2013GB105003 ; National Natural Science Foundation of China(11475218 ; National Natural Science Foundation of China(11475218 ; 2013GB107004) ; 2013GB107004) ; 11505231 ; 11505231 ; 11375010 ; 11375010 ; 11675218) ; 11675218) ; National Magnetic Confinement Fusion Science Program of China(2013GB105003 ; National Magnetic Confinement Fusion Science Program of China(2013GB105003 ; National Natural Science Foundation of China(11475218 ; National Natural Science Foundation of China(11475218 ; 2013GB107004) ; 2013GB107004) ; 11505231 ; 11505231 ; 11375010 ; 11375010 ; 11675218) ; 11675218)
DOI10.1088/2058-6272/aa7629
关键词[WOS]HT-7 TOKAMAK ; EROSION
收录类别SCI
语种英语
资助者National Magnetic Confinement Fusion Science Program of China(2013GB105003 ; National Magnetic Confinement Fusion Science Program of China(2013GB105003 ; National Natural Science Foundation of China(11475218 ; National Natural Science Foundation of China(11475218 ; 2013GB107004) ; 2013GB107004) ; 11505231 ; 11505231 ; 11375010 ; 11375010 ; 11675218) ; 11675218) ; National Magnetic Confinement Fusion Science Program of China(2013GB105003 ; National Magnetic Confinement Fusion Science Program of China(2013GB105003 ; National Natural Science Foundation of China(11475218 ; National Natural Science Foundation of China(11475218 ; 2013GB107004) ; 2013GB107004) ; 11505231 ; 11505231 ; 11375010 ; 11375010 ; 11675218) ; 11675218)
WOS研究方向Physics
WOS类目Physics, Fluids & Plasmas
WOS记录号WOS:000412118900012
引用统计
文献类型期刊论文
条目标识符http://ir.hfcas.ac.cn:8080/handle/334002/33738
专题中科院等离子体物理研究所
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
3.Univ Sci & Technol China, Ctr Phys Expt, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714
Peng, Jiao,Yan, Rong,Ding, Rui,et al. Repetitive cleaning of a stainless steel first mirror using radio frequency plasma[J]. PLASMA SCIENCE & TECHNOLOGY,2017,19(10).
APA Peng, Jiao,Yan, Rong,Ding, Rui,Chen, Junling,Zhu, Dahuan,&Zhang, Zengming.(2017).Repetitive cleaning of a stainless steel first mirror using radio frequency plasma.PLASMA SCIENCE & TECHNOLOGY,19(10).
MLA Peng, Jiao,et al."Repetitive cleaning of a stainless steel first mirror using radio frequency plasma".PLASMA SCIENCE & TECHNOLOGY 19.10(2017).
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