【摘要】 描述了1个8×8单元CsI(Tl)探测阵列的结构和工作原理。探测阵列的每个单元是由1块前表面21 mm×21 mm、后表面23.1 mm×23.1 mm、高50 mm的CsI(Tl)棱台、1块光导和光电倍增管组成。在兰州放射性次级束流线(RIBLL)上对探测阵列进行测试,得到探测阵列对30 MeV质子的能量分辨可达2.7%,对170 MeV7Be可达1.5%,可很好地用于放射性束物理实验中带电粒子的鉴别。更多还原

【Abstract】 The principle and structure of a 8×8 CsI(Tl) array detector were described in this paper.For each unit,there are a CsI(Tl) crystal,an optical conductor and a photoelectric multiplier tube.The length of CsI(Tl) crystal is about 50 mm with a 21 mm×21 mm front surface and a 23.1 mm×23.1 mm back surface.The energy resolution is 2.7% for 30 MeV proton and 1.5% for 170 MeV 7Be,which was tested on the RIBLL(Radioactive Ion Beam Line in Lanzhou).It can be used to identify the charged particles in the nuclear experiments induced by the radioactive beam.更多还原