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Development and test of the laser blow-off impurity injection system in experimental advanced superconducting tokamak

文献类型：期刊论文

作者Shen, Y. C.2; Fan, Y.1,3; Zhang, H. M.3; Lyu, B.3,4; Lin, Z. C.3,4; Yin, X. H.1; Wang, F. D.3; Fu, J.3; Ji, H. J.3,4; Zeng, C.1,3
刊名REVIEW OF SCIENTIFIC INSTRUMENTS
出版日期2024-08-01
卷号95
ISSN号0034-6748
DOI10.1063/5.0215727
通讯作者Zhang, H. M.(hmzhang@ipp.ac.cn) ; Lyu, B.(blu@ipp.ac.cn)
英文摘要The Laser Blow-Off (LBO) impurity injection system is a crucial tool for studying impurity transport and plasma behavior. Conducting proactive impurity transport research is challenging on experimental advanced superconducting tokamak (EAST) due to the uncontrollable generation of impurity sources; therefore, it is necessary to develop a laser blow-off impurity injection system for injecting controlled trace impurity particles. This study presents the design and test results of an LBO system for the EAST. The system aims to provide precise and repeatable control over the timing and quantity of impurity injection. The system primarily consists of a laser source, two mirrors, a moveable focusing lens, a target material, and a vacuum system. The movement of the focusing lens is achieved by a three-dimensional displacement system. The operation of the system is completed by a remote control system. With the accurate control system, the laser spot diameter is adjustable, allowing for modification of impurity injection quantity. The test results demonstrate that the system can rapidly detect external trigger signals and ensure precise timing for the impurity injection. Furthermore, this system can also quickly change the focal point of the laser spot, addressing the requirements for impurity injections during the experiments with less than 0.4 mm position error for laser spot focusing. Test results have shown that the aluminum film material can be peeled off by the LBO system when the laser energy exceeds 650 mJ and the smallest ablation spot is about 1 mm. This study is of significant importance for conducting plasma impurity transport research on the EAST.
WOS关键词TRANSPORT
资助项目National Natural Science Foundation of China ; National Magnetic Confinement Fusion Science Program of China[2019YFE0304002] ; High Level Talents Research Launch Foundation of Hefei Normal University[2022RCJJ07] ; [U23A2077] ; [12205072]
WOS研究方向Instruments & Instrumentation ; Physics
语种英语
WOS记录号WOS:001298519500004
出版者AIP Publishing
资助机构National Natural Science Foundation of China ; National Magnetic Confinement Fusion Science Program of China ; High Level Talents Research Launch Foundation of Hefei Normal University
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/135875]  
专题中国科学院合肥物质科学研究院
通讯作者Zhang, H. M.; Lyu, B.
作者单位1.Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China
2.Hefei Normal Univ, Sch Phys & Mat Engn, Hefei 230601, Peoples R China
3.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
4.Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Shen, Y. C.,Fan, Y.,Zhang, H. M.,et al. Development and test of the laser blow-off impurity injection system in experimental advanced superconducting tokamak[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2024,95.
APA Shen, Y. C..,Fan, Y..,Zhang, H. M..,Lyu, B..,Lin, Z. C..,...&Mao, L. Y..(2024).Development and test of the laser blow-off impurity injection system in experimental advanced superconducting tokamak.REVIEW OF SCIENTIFIC INSTRUMENTS,95.
MLA Shen, Y. C.,et al."Development and test of the laser blow-off impurity injection system in experimental advanced superconducting tokamak".REVIEW OF SCIENTIFIC INSTRUMENTS 95(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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