An 8 T no-insulation (NI) high temperature superconducting (HTS) insert has been designed using a 12 T low temperature superconducting (LTS) magnet to build a 20 T magnet. This paper focuses on the electromagnetic design and stress analysis of the 8 T HTS insert coil. The preserve elitist genetic algorithm was adopted to design a coil with the least cost in conjunction with the finite element program. The pre-stress during the winding, the thermal stress during the cooling down, and the electromagnetic stress considering screening current effect during the charging of the HTS insert coil were analyzed and discussed in this paper.

中文翻译：

---

用于 20 T 磁体的 8 T 无绝缘 HTS 插入线圈的电磁设计和应力分析

使用 12 T 低温超导 (LTS) 磁体设计了 8 T 无绝缘 (NI) 高温超导 (HTS) 插件，以构建 20 T 磁体。本文重点介绍 8 T HTS 插入线圈的电磁设计和应力分析。采用保留精英遗传算法结合有限元程序设计成本最低的线圈。本文对HTS插入线圈充电过程中的绕组预应力、冷却过程中的热应力和考虑屏蔽电流效应的电磁应力进行了分析和讨论。