【摘要】 低温恒温器是超导直线加速器最主要的热负载来源。根据低温恒温器的系统组成和传热特性，运用导热和对流换热理论对功率耦合器外导体、超导螺线管高温超导电流引线，以及束流位置探测器(BPM)信号传输电缆等部件进行了热分析，对影响传热效率的若干因素进行了研究。结果表明，传热方案的优化可显著降低低温恒温器热负载，满足了超导直线加速器的稳定运行要求。更多还原

【Abstract】 Cryomodule is the main source of heat load in superconducting proton linac. According to the system components and thermal characteristics of cryomodule, the outer conductor of power coupler, high-temperature superconducting current lead of superconducting solenoid and signal transmission cable of BPM were numerically analyzed by using heat conduction and convection heat transfer theory, and some factors affecting heat transfer efficiency were also studied. The results show that the heat load of cryomodule can be significantly reduced by the optimization of the heat transfer scheme, which meets the stable operation requirements of the superconducting linear accelerator.更多还原