Optimization of the POlarimeter-INTerferometer diagnostics system on EAST

doi:10.1088/1748-0221/15/06/T06009

	Optimization of the POlarimeter-INTerferometer diagnostics system on EAST
	Wang, Y. F.4,5; Liu, H. Q.5; Jie, Y. X.5; Lian, H.3; Chu, Y. Q.4,5; Li, W. M.5; Wang, S. X.5; Zhu, X.1,2
刊名	JOURNAL OF INSTRUMENTATION
	2020-06-01
卷号	15
关键词	Plasma diagnostics - interferometry, spectroscopy and imaging Nuclear instruments and methods for hot plasma diagnostics
ISSN号	1748-0221
DOI	10.1088/1748-0221/15/06/T06009
通讯作者	Liu, H. Q.(hqliu@ipp.ac.cn)
英文摘要	A double-pass, radial-view, 11-chord POlarimeter-INTerferometer (POINT) system has been routinely operated on the Experimental Advanced Superconducting Tokamak (EAST) to provide electron density and current density information for physics research. Stray light occurs due to spurious reflections from optical elements, including lenses, waveplates, windows, and even detectors, along the optical path and can seriously deteriorate the accuracy of the Faraday rotation measurements. As a result of stray light contamination, periodic oscillations can be observed in the Faraday rotation data during the density ramp-up phase. Aiming to realize real-time current profile feedback control using Faraday effect measurements, the contamination from stray light must be removed. Some optimization methods have been explored to decrease the error induced by stray light. The results show that the Faraday angle oscillation during the density ramp-up phase is reduced from 3 degrees-5 degrees to 0.5 degrees-1 degrees (double-pass). Measurement of the noncollinearity error is also performed for the POINT system on EAST. This optimization allows for more accurate current profile measurements for physics research.
资助项目	National Key R&D Program of China[2017YFE0300500] ; Users with Excellence Project of Hefei Science Center, CAS[2018HSC-UE007] ; Key Program of Research and Development of Hefei Science Center, CAS[2019HSC-KPRD001] ; National Nature Science Foundation of China[61627901] ; National Nature Science Foundation of China[6162790105]
WOS关键词	FAR-INFRARED POLARIMETER
WOS研究方向	Instruments & Instrumentation
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000545351200002
资助机构	National Key R&D Program of China ; Users with Excellence Project of Hefei Science Center, CAS ; Key Program of Research and Development of Hefei Science Center, CAS ; National Nature Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/71096]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu, H. Q.
作者单位	1.Shenzhen Univ, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Coll Optoelect Engn, Shenzhen 518060, Peoples R China 2.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 3.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 4.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 5.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Wang, Y. F.,Liu, H. Q.,Jie, Y. X.,et al. Optimization of the POlarimeter-INTerferometer diagnostics system on EAST[J]. JOURNAL OF INSTRUMENTATION,2020,15.
APA	Wang, Y. F..,Liu, H. Q..,Jie, Y. X..,Lian, H..,Chu, Y. Q..,...&Zhu, X..(2020).Optimization of the POlarimeter-INTerferometer diagnostics system on EAST.JOURNAL OF INSTRUMENTATION,15.
MLA	Wang, Y. F.,et al."Optimization of the POlarimeter-INTerferometer diagnostics system on EAST".JOURNAL OF INSTRUMENTATION 15(2020).