摘要
介绍一种内孔直径达30mm、中心场强达5. 51T的密绕超导磁体系统的设计与研制,用于相对反波振荡器的运行。基于磁场均匀度的考虑,该磁体由三个同轴线圈组成。三个线圈由一个电源串联供电。整个磁体均匀度在轴向方向优于±0. 5%。此外,运用一对HTS超导引线和二级G-M制冷剂(1. 5W@4. 2K)实现整个系统的液氦零蒸发。
This paper described the design and development of a homogeneous magnetic field superconducting magnet with a room - temperature bore of 30 mm and a central field of 5.51 T for relativistic backward - wave oscillator. As a result of magnetic field homogeneity considerations, the magnet was composed of three coaxial coils. All coils were connected in series and charged with a single power supply. The magnetic field homogeneity was better than + 0.5% from -30 mm to 30 mm in axial direction. The magnet could be operated in persistent mode with a superconducting switch. In addition, a pair of HTS current leads and a two - stage GM cryocooler with cooling capacity of 1.5 W at 4.2 K were adopted to realize a zero liquid helium boil - off.
作者
黄炜
郑遥路
江诗礼
陈文革
Huang Wei;Zheng Yaolu;Jiang Shili;Chen Wenge(High Magnetic Field Laboratory,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)
出处
《低温与超导》
CAS
北大核心
2018年第9期44-48,54,共6页
Cryogenics and Superconductivity
关键词
密绕磁体
相对反波振荡器
零蒸发
均匀度
Dense superconducting magnet
Relativistic Backward -wave Oscillator( RBWO)
Homogeneity
Zero rate evaporation
Homogeneity