Decoupling Design of Z2 Superconducting Shim Coils for 9.4-T MRI Superconducting Magnet
Decoupling Design of Z2 Superconducting Shim Coils for 9.4-T MRI Superconducting Magnet
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DOI：
10.1109/tasc.2016.2530310
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发表时间：
2016-03
影响因子：
1.8
通讯作者：
Yi Li;Qiuliang Wang;Xuchen Zhu;Z. Ni;Lei Wang
中科院分区：
文献类型：
--
作者：
Yi Li;Qiuliang Wang;Xuchen Zhu;Z. Ni;Lei Wang
设计了一套用于9.4T全身MRI超导磁体的超导匀场线圈。为了保证Z2匀场线圈在失超过程中的安全性，提出了Z2匀场线圈与磁体解耦的最小判据。基于解析法，介绍了传统的Z2匀场线圈的两对结构。提出了一种新的Z2匀场线圈五线圈结构用于去耦设计。针对不同的设计参数的优化解决方案，并进行了分析。考虑到磁体所需的容量和其他匀场方法所能处理的磁场误差，为磁体选择了解决方案。
A set of superconducting shim coils for the 9.4-T whole-body MRI superconducting magnet have been designed. A minimum criterion for the Z2 shim coils' decoupling from the magnet is introduced for the safety of the Z2 shim coils during the magnet quench. The traditional two-pair structure of the Z2 shim coils is introduced based on analytical method. A new five-coil structure of the Z2 shim coils for decoupling design is proposed. Optimized solutions with respect to different design parameters are obtained and analyzed. Solution is chosen for the magnet in consideration of the capacity that the magnet needs and the field error that other shim methods can deal with.