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A multichannel visible spectroscopy system for the ITER- like W divertor on EAST

文献类型：期刊论文

作者Mao, Hongmin1; Ding, Fang1; Luo, Guang-Nan1,2,3; Hu, Zhenhua1; Chen, Xiahua1; Xu, Feng1; Yang, Zhongshi1; Chen, Jingbo1; Wang, Liang1; Ding, Rui1
刊名REVIEW OF SCIENTIFIC INSTRUMENTS
出版日期2017-04-01
卷号88期号:4
DOI10.1063/1.4979406
文献子类Article
英文摘要To facilitate long-pulse high power operation, an ITER-like actively cooled tungsten (W) divertor was installed in Experimental Advanced Superconducting Tokamak (EAST) to replace the original upper graphite divertor in 2014. A dedicated multichannel visible spectroscopic diagnostic system has been accordingly developed for the characterization of the plasma and impurities in the W divertor. An array of 22 lines-of-sight (LOSs) provides a profile measurement of the light emitted from the plasma along upper outer divertor, and the other 17 vertical LOSs view the upper inner divertor, achieving a 13 mm poloidal resolution in both regions. The light emitted from the plasma is collected by a specially designed optical lens assembly and then transferred to a Czerny-Turner spectrometer via 40 m quartz fibers. At the end, the spectra dispersed by the spectrometer are recorded with an ElectronMultiplying Charge Coupled Device (EMCCD). The optical throughput and quantum efficiency of the system are optimized in the wavelength range 350-700 nm. The spectral resolution/coverage can be adjusted from 0.01 nm/3 nm to 0.41 nm/140 nm by switching the grating with suitable groove density. The frame rate depends on the setting of LOS number in EMCCD and can reach nearly 2 kHz for single LOS detection. The light collected by the front optical lens can also be divided and partly transferred to a photomultiplier tube array with specified bandpass filter, which can provide faster sampling rates by up to 200 kHz. The spectroscopic diagnostic is routinely operated inEASTdischarges with absolute optical calibrations applied before and after each campaign, monitoring photon fluxes from impurities and H recycling in the upper divertor. This paper presents the technical details of the diagnostic and typical measurements during EAST discharges. Published by AIP Publishing.
WOS关键词PLASMA-FACING MATERIALS ; ASDEX-UPGRADE ; COMPONENTS ; EROSION ; DEVICES ; WALL
WOS研究方向Instruments & Instrumentation ; Physics
语种英语
WOS记录号WOS:000400392800015
资助机构National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; National Magnetic Confinement Fusion Science Program of China(2013GB105002 ; 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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/33492]  
专题合肥物质科学研究院_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, Peoples R China
2.Hefei Ctr Phys Sci & Technol, Hefei 230031, Peoples R China
3.Chinese Acad Sci, Hefei Sci Ctr, Hefei 230027, Peoples R China
推荐引用方式
GB/T 7714		 Mao, Hongmin,Ding, Fang,Luo, Guang-Nan,et al. A multichannel visible spectroscopy system for the ITER- like W divertor on EAST[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2017,88(4).
APA Mao, Hongmin.,Ding, Fang.,Luo, Guang-Nan.,Hu, Zhenhua.,Chen, Xiahua.,...&Wu, Chengrui.(2017).A multichannel visible spectroscopy system for the ITER- like W divertor on EAST.REVIEW OF SCIENTIFIC INSTRUMENTS,88(4).
MLA Mao, Hongmin,et al."A multichannel visible spectroscopy system for the ITER- like W divertor on EAST".REVIEW OF SCIENTIFIC INSTRUMENTS 88.4(2017).

入库方式： OAI收割

来源：合肥物质科学研究院

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