Quench Protection of a Nb3Sn Superconducting Magnet System for a 45-GHz ECR Ion Source

doi:10.1109/TASC.2018.2793891

	Quench Protection of a Nb3Sn Superconducting Magnet System for a 45-GHz ECR Ion Source
	Ravaioli, E.1; Hafalia, A. (Ray), Jr.1; Juchno, M.1; Lu, W.1 ; Sabbi, G. L.1; Sun, L.2; Wu, W.2 ; Xie, D.1; Zhao, H. W.2; Zheng, S. J.2
刊名	IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
	2018-04-01
卷号	28 期号:3 页码:4700906
关键词	Circuit modeling CLIQ ECR quench protection superconducting coil
ISSN号	1051-8223
DOI	10.1109/TASC.2018.2793891
英文摘要	Lawrence Berkeley National Laboratory in collaboration with the Institute of Modern Physics has developed a Nb3Sn-based superconducting magnet system for a fourth-generation electron cyclotron resonance source, with a goal of achieving the magnetic field required for operating at the microwave frequency of 45 GHz. The magnet system is composed of one sextupole magnet inside three solenoids of different sizes manufactured from Nb3Sn round wire. Given the high stored energy density and relatively low wire copper fraction, the coils are not self-protected in the case of a quench. The study of the transient following a quench is carried out by means of the lumped-element dynamic electro-thermal program, which includes a detailed simulation of the interfilament coupling losses developing in the wire. Nonlinear effects occurring in the magnet, such as coupling loss and differential inductance reduction, have a significant impact on protecting these magnets. The resulting baseline quench protection strategy based on four independent energy extraction systems protecting the four magnets meets the quench protection requirements. Furthermore, in order to enhance the redundancy of the quench protection system and reduce the peak voltages to ground, the implementation of a coupling-loss induced quench (CLIQ) system is considered.
资助项目	U.S. Department of Energy through the US LHC Accelerator Research Program (LARP) ; NSFC[11427904]
WOS研究方向	Engineering ; Physics
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000426062800001
资助机构	U.S. Department of Energy through the US LHC Accelerator Research Program (LARP) ; NSFC
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/47339]
专题	中国科学院近代物理研究所
通讯作者	Ravaioli, E.
作者单位	1.Lawrence Berkeley Natl Lab Berkeley, Berkeley, CA 94720 USA 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Ravaioli, E.,Hafalia, A. ,Juchno, M.,et al. Quench Protection of a Nb3Sn Superconducting Magnet System for a 45-GHz ECR Ion Source[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2018,28(3):4700906.
APA	Ravaioli, E..,Hafalia, A. .,Juchno, M..,Lu, W..,Sabbi, G. L..,...&Zheng, S. J..(2018).Quench Protection of a Nb3Sn Superconducting Magnet System for a 45-GHz ECR Ion Source.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,28(3),4700906.
MLA	Ravaioli, E.,et al."Quench Protection of a Nb3Sn Superconducting Magnet System for a 45-GHz ECR Ion Source".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 28.3(2018):4700906.