Real-Time 2-D Optical Polarization Properties of the Fusion Reactor First Mirror Based on Active Polarized Beams
Qi, Junli1,2,3; Wang, Weihua1,2,3; Pan, Baoguo3; Zhang, Hui3; Yang, Jinhong3; Deng, Haifei1,2,3; Shi, Bo1,2,3; Shan, Huihui3
刊名IEEE TRANSACTIONS ON PLASMA SCIENCE
2018-05-01
卷号46期号:5页码:1186-1190
关键词2-D detection first mirror (FM) optical polarization property polarized beam real-time detection
ISSN号0093-3813
DOI10.1109/TPS.2018.2801466
英文摘要

First mirrors (FMs) are essential plasma-facing components for optical measurements including spectroscopy and image systems to diagnose plasma characteristics in controlled fusion devices. Under the action of plasma, the FM surface morphology, structure and composition, and optical properties will be changed, which seriously affect the optical performance and service life of the FM. The existing FM detection methods are usually based on offline detection, which need to take FMs out from tokamak. With the development and requirements of ITER, fusion reactor running time will become longer and longer, even several years. The FM detection must be real-time and online. Based on the polarization characteristics of a metal object, the experiment system of active polarized beam detecting FM optical polarization properties was proposed. The polarization direction of incident beams was modulated at horizontal, -45 degrees, and vertical direction, respectively. The real-time 2-D polarization information varieties, including the degree of polarization, polarization azimuth, and polarization ellipticity, reflecting from different samples with surface roughness Ra = 0.012, 0.025, and 0.05 mu m, respectively, were studied in detail. It was indicated that depolarization happened after reflection from the samples. The greater the Ra, the more changed the polarization parameters, and the worse of the uniformity of polarization parameters. It is found that the 2-D polarization properties can be used to detect a different roughness degree Ra, which provides a significant basis for further quantitative detection of FM damage.

资助项目National Magnetic Confinement Fusion Science Program of China[2013GB113004] ; National Natural Science Foundation of China[11704411] ; Natural Science Foundation of Anhui[1508085QA24] ; National Magnetic Confinement Fusion Science Program of China[2013GB113000]
WOS关键词DIAGNOSTIC MIRRORS ; EXPOSURE ; TOKAMAK ; IMPACT ; ITER ; JET
WOS研究方向Physics
语种英语
出版者IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号WOS:000431521700018
内容类型期刊论文
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/35628]  
专题合肥物质科学研究院_中科院等离子体物理研究所
通讯作者Qi, Junli
作者单位1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
2.Univ Sci & Technol China, Sci Isl Branch Grad Sch, Hefei 230031, Anhui, Peoples R China
3.Army Officer Acad, Inst Appl Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714
Qi, Junli,Wang, Weihua,Pan, Baoguo,et al. Real-Time 2-D Optical Polarization Properties of the Fusion Reactor First Mirror Based on Active Polarized Beams[J]. IEEE TRANSACTIONS ON PLASMA SCIENCE,2018,46(5):1186-1190.
APA Qi, Junli.,Wang, Weihua.,Pan, Baoguo.,Zhang, Hui.,Yang, Jinhong.,...&Shan, Huihui.(2018).Real-Time 2-D Optical Polarization Properties of the Fusion Reactor First Mirror Based on Active Polarized Beams.IEEE TRANSACTIONS ON PLASMA SCIENCE,46(5),1186-1190.
MLA Qi, Junli,et al."Real-Time 2-D Optical Polarization Properties of the Fusion Reactor First Mirror Based on Active Polarized Beams".IEEE TRANSACTIONS ON PLASMA SCIENCE 46.5(2018):1186-1190.
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