基于小型NbTi超导磁体虹吸冷却方案的模拟研究  

Simulation study of thermosiphon cooling scheme based on small NbTi superconducting magnet

作　　者：邓逸 杨欢[2] 王元博 孙淑凤[1] 靳爽 姜兴敏 王梦琳 朱自安[2,3] 张国庆 王美芬[2,3] Deng Yi;Yang Huan;Wang Yuanbo;Sun Shufeng;Jin Shuang;Jiang Xingmin;Wang Menglin;Zhu Zian;Zhang Guoqing;Wang Meifen(University of Science and Technology Beijing, Beijing 100083,China;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]北京科技大学,北京100083 [2]中国科学院高能物理研究所,北京100049 [3]中国科学院大学,北京100049

出　　处：《低温工程》2021年第1期67-74,共8页Cryogenics

基　　金：中科院高能所自主部署CEPC探测器磁铁关键技术预研(Y9291308U2)。

摘　　要：环形正负电子对撞机CEPC(Circular Electron-Positron Collider)的探测器超导磁体位于对撞区,其低温系统拟采用液氦虹吸冷却方案。基于一个小型超导磁体(室温孔Φ100 mm,长度500 mm)设计了相应的虹吸冷却系统。针对不同的冷却管直径和液氦充注率进行仿真模拟,结果表明:冷却管直径为8 mm时,虹吸回路具有更好的传热性能,而基于目前的物理设计,相分离器的充液率在10%—60%内,虹吸回路均可正常工作。The detector superconducting magnet of the Circular Electron-Positron Collider(CEPC)is located in the collision zone。A thermosiphon cooling scheme is envisioned for its cryogenic system.This paper designs the corresponding thermosiphon cooling circuit based on a small superconducting magnet(room temperature holeΦ100 mm,length 500 mm).Simulations for different cooling tube diameters and liquid helium filling ratios have been carried out.The results show that when the cooling tube diameter is 8 mm,the thermosiphon circuit has better heat transfer performance.Based on the current physical design,the thermosiphon circuit can work normally when the filling rate of the phase separator is within 10%-60%.

关 键 词：超导磁体 虹吸冷却 液氦 

分 类 号：TB66[一般工业技术—制冷工程]