用于~(16)C核集团结构实验研究的望远镜探测器阵列性能研究

对16C核集团结构实验研究中使用的望远镜探测器阵列的性能进行了研究,此望远镜阵列主要用于靶后反应产物的探测及粒子鉴别。探测器阵列由9组望远镜组成,其中包括了硅微条、位置灵敏硅探测器(PSD)、大面积硅探测器(SSD)和CsI探测器单元在内的多种类型的探测器。用241Amα源对组成望远镜的各探测器进行了测试和优化,且在中国科学院近代物理研究所的重离子加速器放射性次级束流线(RIBLL)上进行了在束测试。结果表明,研制的望远镜探测器阵列具有较好的能量分辨、高的角分辨及粒子鉴别能力,可满足通过碎裂反应来研究16C等原子核的集团结构的需要。

Characters Study of Telescope Array for Experimental Study of ~(16)C Cluster Structure

A compact telescope array was developed and applied in the experimental study of ¹⁶C cluster structure. Good energy resolution and position resolution were achieved. There are 9 telescopes in the array. One telescope consists of two single-sided silicon strip detectors and one segmented CsI(Tl) unit. The other 8 telescopes consist of one size Si detector, one position sensitivity detector and one segmented CsI(Tl) unit. The segmented CsI(Tl) unit consists of four 25 mm×26 mm×26 mm CsI (Tl) crystals, which are coupled with photodiodes. It was tested with ²⁴¹Am alpha source in different envelope and coupling methods. The working condition was optimized to get good energy resolution.