Design of a centrifugal acceleration system for high velocity injection of impurity pellet into EAST tokamak

doi:10.1016/j.fusengdes.2021.112871

	Design of a centrifugal acceleration system for high velocity injection of impurity pellet into EAST tokamak
	Yuan, J. S.1,3; Zuo, G. Z.3; Li, C. L.1,3; Hou, J. L.3; Chen, Y.1; Huang, M.3; Xu, W.3,4; Meng, X. C.3,4; Sun, Z.2; Hu, J. S.3
刊名	FUSION ENGINEERING AND DESIGN
	2021-11-01
卷号	172
关键词	Centrifugal accelerator Pellet injection EAST tokamak
ISSN号	0920-3796
DOI	10.1016/j.fusengdes.2021.112871
通讯作者	Zuo, G. Z.(zuoguizh@ipp.ac.cn) ; Hu, J. S.(hujs@ipp.ac.cn)
英文摘要	A centrifugal pellet injection system for high velocity impurity pellet injection to control ELMs and research impurity transport has been developed for the Experimental Advanced Superconducting Tokamak (EAST). The system is composed of the dropper, the centrifugal accelerator, vacuum pumping system and the diagnostic unit. The centrifugal accelerator is designed to accelerate the pellet by the rotating arm driven by a KYKY F100 turbomolecular pump with an adjusted rotating velocity from 0 to 42,300 rpm. In order to evaluate the stability of the rotating arm, the stress distribution of the rotating arm at different rotating velocities is analyzed by the stress field simulation, and the result shows the maximum stress of the rotating arm appears at the transition position between the large circular groove and the acceleration groove. By simulation analysis, it is noted that the arm can work steadily at 2500 rad/s (corresponding to about 398 Hz arm rotation frequency) rotating velocity and may be broken at 4000 rad/s (637 Hz). By the bench testing using the Li pellets of 1 mm diameter as injection material, it shows the centrifugal accelerator can work steadily for a long time under the condition that the rotating velocity doesn't exceed 2200 rad/s (350 Hz) and the maximum velocity of the pellet can reach 286 m/s. Based on the results of simulation and bench test, the centrifugal pellet injection system was installed and then injected Li pellets into the plasma steadily and continuously with the rotating velocity <2200 rad/s on EAST.
资助项目	National Key Research and Development Program of China[2017YFE0301100] ; National Key Research and Development Program of China[2017YFA0402500] ; National Nature Science Foundation of China[11625524] ; National Nature Science Foundation of China[11775261] ; National Nature Science Foundation of China[11905138] ; National Nature Science Foundation of China[11905148] ; National Nature Science Foundation of China[11905254] ; Chinese Academy of Sciences[2021000166] ; Chinese Post-doctoral Science Foundation[2021000278] ; Presidential Foundation of Hefei institutes of Physical Science[YZJJ2021QN12] ; Users with Excellence Program of Hefei Science Center CAS[2020HSC-UE010] ; project of EAST, Hefei comprehensive national science center
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000709552800008
资助机构	National Key Research and Development Program of China ; National Nature Science Foundation of China ; Chinese Academy of Sciences ; Chinese Post-doctoral Science Foundation ; Presidential Foundation of Hefei institutes of Physical Science ; Users with Excellence Program of Hefei Science Center CAS ; project of EAST, Hefei comprehensive national science center
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125804]
专题	中国科学院合肥物质科学研究院
通讯作者	Zuo, G. Z.; Hu, J. S.
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Princeton Univ, Plasma Phys Lab Princeton, Princeton, NJ 08543 USA 3.Chinese Acad Sci, Inst Plasma Phys Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 4.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Yuan, J. S.,Zuo, G. Z.,Li, C. L.,et al. Design of a centrifugal acceleration system for high velocity injection of impurity pellet into EAST tokamak[J]. FUSION ENGINEERING AND DESIGN,2021,172.
APA	Yuan, J. S..,Zuo, G. Z..,Li, C. L..,Hou, J. L..,Chen, Y..,...&Hu, J. S..(2021).Design of a centrifugal acceleration system for high velocity injection of impurity pellet into EAST tokamak.FUSION ENGINEERING AND DESIGN,172.
MLA	Yuan, J. S.,et al."Design of a centrifugal acceleration system for high velocity injection of impurity pellet into EAST tokamak".FUSION ENGINEERING AND DESIGN 172(2021).