Understanding quench in no-insulation (NI) REBCO magnets through experiments and simulations

被引:59
作者
Bhattarai, Kabindra R. [1 ]
Kim, Kwanglok [1 ]
Kim, Kwangmin [1 ]
Radcliff, Kyle [1 ]
Hu, Xinbo [1 ]
Im, Chaemin [2 ]
Painter, Thomas [1 ]
Dixon, Iain [1 ]
Larbalestier, David [1 ]
Lee, SangGap [3 ]
Hahn, Seungyong [2 ]
机构
[1] Natl High Magnet Field Lab, 1800 East Paul Dirac Dr, Tallahassee, FL 32304 USA
[2] Seoul Natl Univ, 1 Gwanak Ro, Seoul, South Korea
[3] Korea Basic Sci Inst, Daejeon 169148, South Korea
基金
新加坡国家研究基金会; 美国国家科学基金会;
关键词
HTS magnet; no-insulation; protection; quench; simulation;
D O I
10.1088/1361-6668/ab6699
中图分类号
O59 [应用物理学];
学科分类号
摘要
Present research on no-insulation (NI) rare earth barium copper oxide (REBCO) magnets have demonstrated their ability to produce high fields due to their compact nature. NI magnets have often been demonstrated to be self-protecting. However, evidence of mechanical damage in recent high field magnets, suggests that there are some issues about quench that must be resolved for this otherwise promising technology. This article attempts to explain multi-physics phenomena occurring during the quench of an NI magnet that can be used to elucidate quench behavior through experiments and simulations. A lumped circuit model is used for the circuit analysis where each coil is modeled as a single inductor with variable quench resistance in series and characteristic contact resistance in parallel. Three case studies have been analyzed: (1) a 3 double pancake (DP) standalone magnet, (2) a 2 DP coil in 31 T background, and (3) a high temperature superconductor/low temperature superconductor (HTS/LTS) hybrid user magnet that consists of a 13 T HTS insert and a 6 T LTS background magnet. Lessons learned from these analyses include: (1) characteristic resistance of NI coil rises during quench with the temperature rise; (2) influence of Hall effect exists on the voltage rise during quench; (3) over-current during quench can over-stress the coil; and (4) quench propagation from one end of the magnet generates significant unbalanced forces. This approach is expected to be used in the preliminary design of an ultra high field (>40 T) user magnet currently under design at the National High Magnetic Field Laboratory.
引用
收藏
页数:11
相关论文
共 41 条
  • [1] [Anonymous], 2009, Case studies in superconducting magnets: design and operational issues, DOI DOI 10.1007/B112047
  • [2] [Anonymous], IEEE T APPL SUPERCON
  • [3] [Anonymous], 2017, Supercond. Sci. Technol, DOI [DOI 10.1088/1361-6668/aa5b05, DOI 10.1088/1361-6668/AA5B05]
  • [4] [Anonymous], IEEE CSC ESAS SUP NE
  • [5] [Anonymous], 2018, P 2018 AIAA IEEE EL, DOI DOI 10.2514/6.2018-5002
  • [6] [Anonymous], 2017, 25 INT C MAGN TECHN
  • [7] Quench Analysis of a Multiwidth No-Insulation 7-T 78-mm REBCO Magnet3
    Bhattarai, Kabindra R.
    Kim, Kwanglok
    Kim, Seokho
    Lee, SangGap
    Hahn, Seungyong
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2017, 27 (04)
  • [8] Bobrov E. S., 1980, Mechanics of Superconducting Structures. Winter Annual Meeting of the American Society of Mechanical Engineers, P13
  • [9] An Effective Cryostat Design of Conduction-Cooled HTS Magnets for a 300-kW-Class Superconducting Induction Heater
    Choi, Jongho
    Lee, Chan-Kyeong
    Hwang, Chul-Sang
    Kim, Sung-Kyu
    Cho, Sang-Ho
    Park, Minwon
    Yu, In-Keun
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2018, 28 (03)
  • [10] Progress on the Development of a 5 T HTS Insert Magnet for GHz Class NMR Applications
    Choi, Yeon Suk
    Kim, Dong Lak
    Hahn, Seung Yong
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2011, 21 (03) : 1644 - 1648