Detection Method for a Local Normal-State Transition in a No-Insulation REBCO Pancake Coil
Detection Method for a Local Normal-State Transition in a No-Insulation REBCO Pancake Coil
复制标题
无绝缘 REBCO 扁平线圈局部常态转变的检测方法
DOI：
10.1109/tasc.2016.2633720
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
So Noguchi
中科院分区：
文献类型：
--
作者：
Tao Wang;Kazuki Katsumata;Atsushi Ishiyama;So Noguchi
在本文中，我们提出了一种使用铜拾波线圈来检测和定位米级非绝缘（NI）线圈中局部正常状态转变的检测方法，该线圈部署在下一代高场磁共振成像扫描仪（MRI）中。法线区的检测和定位有两种方案：一种是在中心孔的中平面上组装环形拾波线圈；另一种是在线圈绕组上部署多个扇形拾波线圈，即“扫描拾波线圈”。为了验证这些检测方法的有效性，我们进行了由部分元件等效电路、热分析和磁场分析组成的数值模拟耦合。根据分析结果，我们再现了米级 NI 线圈中心孔和线圈绕组中磁通量随时间变化的分布，并讨论了这些拾波线圈方案在检测和定位下一代高场 MRI 中使用的米级 NI 线圈中局部正常状态转变的有效性。
In this paper, we have proposed a detection method for detecting and locating a local normal-state transition in a meter-class no-insulation (NI) coil that is deployed in next-generation high-field magnetic resonance imaging scanners (MRIs), using a copper pickup coil. There are two schemes for detecting and locating the normal zone: one is a ring pickup coil assembled on the midplane of a central bore and the other consists of several sector pickup coils deployed on the coil winding, namely “scanning pickup coil.” To verify the effectiveness of these detection methods, we performed a numerical simulation coupling consisting of a partial element equivalent circuit, a thermal analysis, and a magnetic field analysis. Based on the results of analyses, we reproduced the distributions of the temporal variations of the magnetic flux in the central bore and on the coil winding of the meter-class NI coil, and discussed the effectiveness of these pickup coil schemes for detecting and locating a local normal-state transition in a meter-class NI coil used in next-generation high-field MRIs.
基于线圈保护的YBCO涂层导体稳定剂厚度确定标准
影响因子：
1.8
作者：
A. Ishiyama;H. Ueda;T. Ando;H. Naka;S. Bamba;Y. Shiohara
通讯作者：
Y. Shiohara