Simulation research for mixed radiation environment in target chamber Ⅱ of BEPCⅡ-LINAC test beam

In order to get basic physical parameters of radiation environment for detector or sample irradiation experiment and optimal target material choice, Monte Carlo simulation software FLUKA is used to calculate parameters of mixed radiation environment in target chamber Ⅱ on E2 line of test beam. At last, physical parameters: secondary particles differential fluencies, secondary particles angular differential cross-section, dual differential energy spectrum, dose rate distribution are acquired.