摘要
超导磁体一旦失超,短时间的能量释放将使磁体产生很大的内电压和局部温升,如果冲击过大,可能损坏磁体,因此超导磁体的失超传播过程模拟具有重要的意义。超导斜螺线管型二极磁体因其显著优点,在小型加速器和离子束治癌装置上有很好的应用前景,近代物理研究所强流重离子加速器(HIAF)也拟采用该型结构作备选方案,但是由于其特殊的线圈形式,传统的失超模拟方法不再适用。本文采用逻辑坐标与失超传播速度结合的方法模拟了一小型实验磁体的失超传播过程,得到该型磁体失超后电流、电压、温度等相关物理量的变化情况,并比较分析了该类型磁体的失超特点。
During the quench of a superconducting magnet, the stored energy can be dissipated at normal zone in a relatively short time. This may cause overheating and voltage breakdown of superconducting coils, and damage the magnet. Superconduct- ing dipole based on tilted solenoids has many merits, it is especially suitable for low cost superconducting accelerator magnets and ion -beam cancer therapy gantries. High Intensity Heavy -Ion Accelerator Facility（HIAF） also choose it as alternative option. Due to special configuration of strands, conventional quench simulation method is not suitable for them. This paper developed a computer program based on logical coordinate system and Wilson method to simulate the quench propagation process. The coil characteristic behavior such as hot spot temperature and voltage distributions after a quench was obtained.
出处
《低温与超导》
北大核心
2017年第8期46-50,56,共6页
Cryogenics and Superconductivity
基金
国家自然科学基金项目(11575266)
关键词
超导磁体
倾斜螺线管
失超保护
数值模拟
Superconducting magnets, Tilted solenoids, Quench protection, Numerical simulation
