ΔE-E望远镜在9C碎裂反应上的应用

摘要

For studying the halo structure of 'C, a set of AE-E telescope detector was applied in the experiment of 9C fragmentation reaction carried out at the facility of Radioactive Ion Beam Line in Lanzhou (RIBLL). The detector was used to measure the fragments produced in the reaction. The principal aim is to solve the crosstalk between silicon strips and the energy calibration of silicon strip and CsI(Tl) crystal. Using the induced signal of the saturated signal produced by heavy ion punching through the silicon strip, the deposited energy was calibrated. Combining the simulated result and experimental data; a series of energy points were obtained to calibrate the CsKTl) crys-tal. The ion track was reconstructed by position information both in silicon strip and in CsKTl) crystal which were coincident with each other for one ion. Finally, the real physics event was obtained.%为研究9C的晕核结构,一套ΔE-E望远镜探测器应用在兰州放射性次级束流线(RIBLL)上进行的9C碎裂反应实验中,用来测量反应中产生的碎片.为解决ΔE-E望远镜中硅条的干扰问题及硅条和CsI的能量刻度,利用硅条的感应信号对重离子在硅条上产生的饱和信号进行能量刻度,并通过模拟程序与事例得到的刻度点对CsI(Tl)晶体进行能量刻度.同时使用在硅条和CsI( Tl)晶体上的位置信息对反应物径迹进行重建,从而得到同一离子在硅条与CsI(Tl)晶体上信号的符合,并得到了最终的有效物理事件.