HFCAS OpenIR  > 中科院等离子体物理研究所
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
Source PublicationPLASMA SCIENCE & TECHNOLOGY
Volume19Issue:10
AbstractFirst 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.
SubtypeArticle
KeywordFirst Mirror Stainless Steel Lifetime Repetitive Cleaning Reflectivity
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational 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
WOS KeywordHT-7 TOKAMAK ; EROSION
Indexed BySCI
Language英语
Funding OrganizationNational 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 Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000412118900012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33738
Collection中科院等离子体物理研究所
Affiliation1.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
Recommended Citation
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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