Design and Simulation of a Detection System for Conducting Nuclear Radioactive Ion Beam Direct Reaction Experiment in Several Times the Coulomb Barrier Energy Region

The detection system designed in this paper is a set of high-efficiency detector system based on the research requirements of the Radioactive Ion Beams physics and the Radioactive Ion Beam Line in Lanzhou(RIBLL) at the Heavy Ion Research Facility in Lanzhou(HIRFL). The detector system consists of six sets of telescopes, each composed of a three-layer structure DSSD+PSD+CSI(Tl). After using Geant4 simulation to obtain the geometric efficiency, the best design of the detection system is given. Then the elastic scattering and breakup reactions of ^7\rmBe on the ^208 \rmPb target with E_\rm lab=125 MeV have been simulated. The statistical distributions of the elastic scattering and breakup events were obtained.