超导磁体测试用低温恒温器设计及性能分析
Design and performance analysis of cryostat for superconducting magnet measurement
程月 1倪东升 2陈玉泉 3王旭东 2王力实 4朱丽 3王祖军 3姚庆高3
作者信息
- 1. 中国科学院近代物理研究所,兰州 730000;兰州理工大学,兰州 730000
- 2. 中国科学院近代物理研究所,兰州 730000;中国科学技术大学,合肥 230026
- 3. 中国科学院近代物理研究所,兰州 730000
- 4. 中国科学院近代物理研究所,兰州 730000;中国科学院大学,北京 100049
- 折叠
摘要
本文针对"国家重点研发计划—下一代重离子加速器关键部件合作研制"项目中的关键部件快脉冲超导二极磁铁的低温测试需求,研制了一套具备迫流冷却功能的低温恒温器,包含电流引线接口箱(Feedbox)、测试杜瓦及冷却管路.通过优化冷屏涡流分布和采用POST支撑结构,有效降低了热负载并缓解了温差导致的热应力.经计算系统在77 K至4.5 K温度范围内的总漏热量约为17 W,满足低温测试要求.该研究为快脉冲超导磁体在低温条件下的性能评估提供了有力支持,并为未来低温恒温器的优化设计提供了参考.
Abstract
Based on the evaluation requirements for cryogenic performance of the fast-ramped superconducting dipole mag-net,a key component of the"National Key R&D Program—Collaborative Development of Key Components for the Next-Genera-tion Heavy-Ion Accelerator"project,a cryostat with forced-flow cooling capability was designed and developed.It consisted of a feedbox,a test dewar and cooling pipelines.The design was optimized by analyzing and redistributing eddy currents on the ther-mal shield and implementing POST support structures,which significantly reduced thermal loads and alleviated thermal stress in-duced by temperature gradients.Computational analysis indicates that the total heat leakage of the system is approximately 17 W within the operational temperature range of 77 K to 4.5 K,thereby meeting the stringent requirements for cryogenic testing.This research can provide a robust framework for the performance assessment of fast-ramped superconducting magnets under cryogenic conditions and serve as a reference for advancing cryostat optimization in future applications.
关键词
快脉冲超导磁体/低温测试/POST支撑/漏热Key words
Fast pulsed superconducting magnet/Cryogenic test/POST support/Heat leakage引用本文复制引用
出版年
2024
NETL
NSTL
万方数据