中国散裂中子源上试验型Muon产生靶的设计优化

中国散裂中子源（China Spallation Neutron Source,CSNS）建设为我国发展第一条基于高功率质子加速器Muon束及？SR技术提供广阔平台,本文运用Monte Carlo工具G4beamLine模拟计算基于CSNS试验Muon源,寻求Muon靶最优状和最佳靶材,使靶产生表面？＋经过简单输运后,能在？SR实验区获小尺寸,小角散,高强度束斑,然后对规则方靶利用有差分法建模计算靶内温度场分,并对规则靶提出由热平衡简单估算靶温度场方法,最后对靶热应力进行分析计算.试验Muon源建造在我国建设与国外同行比拟Muon束方面有重要意义.

Design and optimization for experimental Muon source at CSNS

The μSR technology based on spallation neutron source has developed very well in the international.The construction of China Spallation Neutron Source（CSNS） will provide us a large platform to develop the first Muon beam and μSR technology in China.According to the experiences from other Muon target,we study the materials and geometries of Muon production target by G4beamLine,a Monte Carlo tool,to find the optimistic design for the first target in China.Finally the temperature and thermal stress distribution for the Muon production target are discussed through finite-difference method,and a simple way to estimate target temperature is put out,which will contributed to constructing an advanced Muon beam in China theoretically.