Electromagnetic Design and Fabrication of LPF2: A 12-T Hybrid Common-Coil Dipole Magnet With Inserted IBS Coil
Electromagnetic Design and Fabrication of LPF2: A 12-T Hybrid Common-Coil Dipole Magnet With Inserted IBS Coil
复制标题
LPF2 的电磁设计和制造：插入 IBS 线圈的 12-T 混合共线圈偶极磁体
DOI：
10.1109/tasc.2019.2962121
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发表时间：
2020-06
影响因子：
1.8
通讯作者：
Yao Huanli
中科院分区：
文献类型：
--
作者：
Wang Chengtao;Wang Juan;Gong Lingling;Zhou Jianxin;Peng Quanling;Bian Xiaojuan;Chen Fusan;Xu Qingjin;Yang Xiangchen;Zhang Zhan;Wang Yingzhe;Kong Ershuai;Zhang Zhen;Shi Jinrui;Wei Shaoqing;Yao Huanli
High field dipole magnets with common-coil configuration are under development at IHEP (the Institute of High Energy Physics, Chinese Academy of Sciences) for key technology pre-study of high energy colliders. A model magnet named LPF1 has been fabricated and tested in 2018, which was made up of four flat racetrack NbTi coils and two flat racetrack Nb3Sn coils, and a main dipole field of 10.2 T has been reached in the two apertures at 4.2 K. A new model magnet LPF2 is being designed and fabricated in 2019, with four new Nb3Sn coils included comparing with LPF1, and the magnet is expected to reach a much higher field. To reduce the field enhancement at the coil ends, the newly fabricated Nb3Sn coils are designed with different straight lengths and bending radii. This hybrid dipole magnet is designed to provide a 12-T main field in the two apertures with an operating current of 5300 A, corresponding to a load line ratio of 78% at 4.2 K. A single-pancake racetrack IBS (Iron-based superconducting) coil wound with a 100-m IBS tape would be inserted into the middle of the magnet (between the inner-most two Nb3Sn coils). This magnet is also used to test the IBS coil performance under high field and high stress. The main design parameters, fabrication process of the magnet will be presented.
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