Forced flow He vapor cooled critical current testing facility for measurements of superconductors in a wide temperature and magnetic field range
Forced flow He vapor cooled critical current testing facility for measurements of superconductors in a wide temperature and magnetic field range
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DOI：
10.1016/j.cryogenics.2016.07.003
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发表时间：
2016-10-01
期刊：
影响因子：
2.1
通讯作者：
Glowacki, Bartek A.
中科院分区：
文献类型：
--
作者：
Baskys, Algirdas;Hopkins, Simon C.;Glowacki, Bartek A.
随着超导材料的应用，越来越需要在工作条件下验证其性能。测试临界电流与温度和磁场的关系尤为重要。然而，覆盖一系列温度和磁场的测试设施可能是昂贵的，特别是当考虑到低温系统在低于65 K的温度范围内所需的冷却功率时（液氮2无法达到）。超过500 A的临界电流对于商业样品是常见的，使得在通过低温冷却器冷却的设置中难以测试这样的样品，此外，它通常不代表样品在使用中将经历的实际冷却条件。这项工作报告的设计和操作的低成本的临界电流测试设备，能够测试样品的温度范围为10-65 K，磁场高达1.6 T和测量临界电流高达900 A的可变冷却功率。(C)2016作者爱思唯尔有限公司出版
As superconducting materials find their way into applications, there is increasing need to verify their performance at operating conditions. Testing of critical current with respect to temperature and magnetic field is of particular importance. However, testing facilities covering a range of temperatures and magnetic fields can be costly, especially when considering the cooling power required in the cryogenic system in the temperature range below 65 K (inaccessible for LN2). Critical currents in excess of 500 A are common for commercial samples, making the testing of such samples difficult in setups cooled via a cryocooler, moreover it often does not represent the actual cooling conditions that the sample will experience in service. This work reports the design and operation of a low-cost critical current testing facility, capable of testing samples in a temperature range of 10-65 K, with magnetic field up to 1.6 T and measuring critical currents up to 900 A with variable cooling power. (C) 2016 The Authors. Published by Elsevier Ltd.