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	Quench detection utilizing stray capacitances
	Ravaioli, Emmanuele1; Martchevskii, Maxim1; Sabbi, GianLuca1; Shen, Tengming1; Zhang, Kai2,3,4
刊名	Ieee transactions on applied superconductivity
	2018-06-01
卷号	28期号:4页码:5
关键词	Capacitance Diagnostic High-temperature superconductor Quench detection Superconducting coil
ISSN号	1051-8223
DOI	10.1109/tasc.2018.2812909
通讯作者	Ravaioli, emmanuele(eravaioli@lbl.gov)
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.
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
WOS类目	Engineering, Electrical & Electronic ; Physics, Applied
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000429215200001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2178192
专题	高能物理研究所
通讯作者	Ravaioli, Emmanuele
作者单位	1.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Beijing 101408, Peoples R China 4.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
推荐引用方式 GB/T 7714	Ravaioli, Emmanuele,Martchevskii, Maxim,Sabbi, GianLuca,et al. Quench detection utilizing stray capacitances[J]. Ieee transactions on applied superconductivity,2018,28(4):5.
APA	Ravaioli, Emmanuele,Martchevskii, Maxim,Sabbi, GianLuca,Shen, Tengming,&Zhang, Kai.(2018).Quench detection utilizing stray capacitances.Ieee transactions on applied superconductivity,28(4),5.
MLA	Ravaioli, Emmanuele,et al."Quench detection utilizing stray capacitances".Ieee transactions on applied superconductivity 28.4(2018):5.

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