中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
Error analysis and cazlibration of Langmuir probes embedded in ITER-like tungsten divertor on EAST

文献类型：期刊论文

作者Meng, L. Y.1,3; Xu, J. C.2; Liu, J. B.1; Wang, L.1; Qian, X. Y.1; Chen, L.1; Liu, X.1; Xu, G. S.1; Liang, R. R.1,3; Huang, J.1,3
刊名NUCLEAR MATERIALS AND ENERGY
出版日期2021-06-01
卷号27
关键词Langmuir probe Ablation Error analysis Calibration EAST tokamak
DOI10.1016/j.nme.2021.100996
通讯作者Liu, J. B.(jianbinliu@ipp.ac.cn) ; Wang, L.(lwang@ipp.ac.cn)
英文摘要The divertor Langmuir probes (Div-LPs) system is a key diagnostic for measuring divertor plasma parameters in tokamaks. The accuracy of the measurement is the basis of physical researches. However, the excessive heat load on the target plates may lead to serious ablation of graphite probe tips, especially during long-pulse operation or unmitigated disruptions. In order to evaluate the data uncertainty caused by ablation, a statistical study has been made based on the Ohmic discharges in the EAST (Experimental Advanced Superconducting Tokamak) 2018 experiment campaign. The results show that for the discharges with the same plasma parameters, the peak particle flux of upper outer divertor measured by Div-LPs becomes several times smaller as the discharge progresses in a long experimental campaign, which is mainly due to that the effective collection area of the ablated probe tip becomes smaller and smaller. To quantitatively calculate the decrease of the effective area of the probe tip, the physical quantity of accumulated injection energy is introduced. A simple model is proposed and used to characterize the relationship between the effective collection area and the total accumulated injection energy. In addition, arbitrary H-mode discharges are selected to verify the model. By comparing the calibrated data of DivLPs with other diagnostics, it is found that the model is also suitable for H-mode discharges with the strike point near the frequently-used-SP, and thereby the uncertainty after calibration is significantly reduced. In the future, the method will be employed for Div-LPs data processing near the strike point on EAST, which will facilitate further researches on divertor physics.
WOS关键词TOKAMAKS ; SYSTEM
资助项目National Key R&D Program of China[2017YFE0301300] ; National Key R&D Program of China[2017YFA0402500] ; Institute of Energy, Hefei Comprehensive National Science Center[GXXT-2020-004] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[U19A20113] ; National Natural Science Foundation of China[11805238] ; National Natural Science Foundation of China[11905255] ; National Natural Science Foundation of China[12005004] ; AHNSF[1808085J07] ; AHNSF[2008085QA38] ; CASHIPS Director's Fund[YZJJ2020QN13] ; EAST team
WOS研究方向Nuclear Science & Technology
语种英语
WOS记录号WOS:000670923000001
出版者ELSEVIER
资助机构National Key R&D Program of China ; Institute of Energy, Hefei Comprehensive National Science Center ; National Natural Science Foundation of China ; AHNSF ; CASHIPS Director's Fund ; EAST team
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/123556]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, J. B.; Wang, L.
作者单位1.Chinese Acad Sci, HFIPS, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Anhui Univ Sci & Technol, Sch Mech Engn, Huainan 232001, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Meng, L. Y.,Xu, J. C.,Liu, J. B.,et al. Error analysis and cazlibration of Langmuir probes embedded in ITER-like tungsten divertor on EAST[J]. NUCLEAR MATERIALS AND ENERGY,2021,27.
APA Meng, L. Y..,Xu, J. C..,Liu, J. B..,Wang, L..,Qian, X. Y..,...&Wang, Y. M..(2021).Error analysis and cazlibration of Langmuir probes embedded in ITER-like tungsten divertor on EAST.NUCLEAR MATERIALS AND ENERGY,27.
MLA Meng, L. Y.,et al."Error analysis and cazlibration of Langmuir probes embedded in ITER-like tungsten divertor on EAST".NUCLEAR MATERIALS AND ENERGY 27(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。