Numerical and Experimental Analysis of Quench Behaviors in Iron-Based Sr/Ba122 Superconducting Tape at Liquid Helium Temperature

Since the initial identification of the iron-based superconductors (IBS) in 2008, numerous studies had focused on how to improve critical current density. However, the research of quench behaviors for iron-based multi-filamentary tapes was rarely reported. It is important to understand quench behavi...

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Bibliographic Details
Published inJournal of superconductivity and novel magnetism Vol. 34; no. 8; pp. 2011 - 2016
Main Authors Ding, Hangwei, Qian, Xinxing, Jiang, Shili, Huang, Pengcheng, Jiang, Donghui, Zhang, Xianping, Chen, Wenge, Ma, Yanwei
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2021
Subjects
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Original Paper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
MQE
Iron-based superconducting tape
Quench behavior
NZPV
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Summary:Since the initial identification of the iron-based superconductors (IBS) in 2008, numerous studies had focused on how to improve critical current density. However, the research of quench behaviors for iron-based multi-filamentary tapes was rarely reported. It is important to understand quench behaviors, and two main parameters should be examined carefully, i.e., normal zone propagation velocity (NZPV) and minimum quench energy (MQE). In this paper, a two-dimensional quench model integrating the stationary electrodynamics equations and heat conduction equation was proposed to study the quench propagation of iron-based Sr/Ba 0.6 K 0.4 Fe 2 As 2 (Sr/Ba122) tape in different transport currents and temperatures. MQEs and NPZVs of IBS tape were calculated by the quench model, and the results were well complied with experimentally results which verified the correctness of the proposed quench model. In addition, since iron-based superconducting coils for high magnetic field application were operating in liquid helium mostly, an experiment was performed to study the quench behaviors of Ba122 tape in liquid helium, for the purpose of understanding the stability of the iron-based superconductor and designing quench protection systems of IBS coils reliably.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-021-05903-0