Electromechanical Characterization of the MgB2 Wire for Transmission Line Magnet System
Electromechanical Characterization of the MgB2 Wire for Transmission Line Magnet System
复制标题
传输线磁体系统用 MgB2 线的机电特性
DOI：
10.1109/tasc.2019.2903649
复制
发表时间：
2019
影响因子：
1.8
通讯作者：
Watanabe Hiroyuki
中科院分区：
文献类型：
--
作者：
Dhakarwal Mukesh;Ogitsu Toru;Sugano Michnaka;Tanaka Hideki;Watanabe Hiroyuki
由于具有较高的转变温度（39 K），并且在制造、操作温度和成本方面可能是铌基超导体的更便宜的替代品，MgB 2似乎是加速器和电力工业中有希望的候选者。为了寻找MgB 2导体的可行性和未来的应用范围，作为J-PARC加速器设备升级的候选者，分析了几个关键参数。在这里，我们介绍了两个研究，在KEK上进行的日立公司开发的MgB 2线。1）MgB 2线的机电特性进行，以确定在MgB 2线受到拉伸应力和磁场时的临界电流（）的影响。2)为了使MgB 2电缆的失超保护能够承受大电流，需要合适的材料成分。百万安培平方秒（MIIT）值被确定为估计铜与超导体（Cu：SC）的比率，用于磁体系统的更安全操作，该磁体系统给出了输电线路的最终电缆组成。
With a high transition temperature (39 K) and as a possible cheaper alternative of Niobium-based superconductors in terms of manufacturing, operation temperature, and cost, MgB2seems to be a promising candidate in the accelerator and electric power industry. Looking for the feasibility and future scopes of the MgB2conductor, for the transmission line magnet and as a candidate in upgrading accelerator facility at J-PARC, several critical parameters were analyzed. Here we are presenting two studies that were carried out at KEK on the MgB2wire developed by HITACHI Ltd. 1) Electromechanical characterization of the MgB2wire was performed, to determine the effects on the critical current () of MgB2wire when subjected to tensile stress and magnetic field. 2) For the quench protection of the MgB2cable to handle the large current, it needs appropriate material composition. Millions of amp squared seconds (MIITs) value was determined to estimate the copper to superconductor (Cu:SC) ratio, for the safer operation of the magnet system which gives the final cable composition for the transmission line.