Quench Detection Utilizing Stray Capacitances

doi:10.1109/TASC.2018.2812909

	Quench Detection Utilizing Stray Capacitances
	Zhang K(张凯); Zhang, K; Martchevskii, M; Ravaioli, E; Sabbi, G; Shen, TM
刊名	IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
	2018
卷号	28 期号:4 页码:4702805
关键词	Capacitance diagnostic high-temperature superconductor quench detection superconducting coil
ISSN号	1051-8223
DOI	10.1109/TASC.2018.2812909
文献子类	Article
英文摘要	Fast detection of the occurrence of a quench in a high-field superconducting magnet is required in order to avoid damage due to overheating of the coil's spot when the quench initiated. This problem is particularly challenging for high temperature superconductor (HTS) magnets due to the low normal zone propagation velocity. As a result, quench detection is one of the factors presently limiting the application of HTS coils. Here, a method based on the measurement of the variation of the stray capacitances between the magnet's elements is proposed. Upon quench initiation, the capacitances between the elements and the coil vary due to multiple effects, including cryogenic fluid boil-off, variation of the dielectric properties of the insulation material, and thermal expansion, which locally changes the distance between coil and metal parts. Results from the first application of this method on a small-scale HTS coil are reported and discussed. Advantages and limitations of this technique with respect to state of the art quench detection methods are discussed.
电子版国际标准刊号	1558-2515
WOS关键词	TEMPERATURE SUPERCONDUCTING COIL ; ACCELERATOR MAGNETS ; NORMAL TRANSITIONS ; ACOUSTIC-EMISSION ; DIPOLE MAGNETS ; PROPAGATION ; LOCALIZATION ; CONDUCTORS ; ANTENNAS ; SYSTEM
WOS研究方向	Engineering ; Physics
语种	英语
WOS记录号	WOS:000429215200001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285805]
专题	高能物理研究所_多学科研究中心高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhang K,Zhang, K,Martchevskii, M,et al. Quench Detection Utilizing Stray Capacitances[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2018,28(4):4702805.
APA	张凯,Zhang, K,Martchevskii, M,Ravaioli, E,Sabbi, G,&Shen, TM.(2018).Quench Detection Utilizing Stray Capacitances.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,28(4),4702805.
MLA	张凯,et al."Quench Detection Utilizing Stray Capacitances".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 28.4(2018):4702805.