论文标题
具有基于APD的读数的长CSI（TL）闪烁体晶体的性能恢复
Performance recovery of long CsI(Tl) scintillator crystals with APD-based readout
论文作者
论文摘要
CALIFA is the high efficiency and energy resolution calorimeter for the R3B experiment at FAIR, intended for detecting high energy light charged particles and gamma rays in scattering experiments, and is being commissioned during the Phase-0 experiments at FAIR, between 2018 and 2020. It surrounds the reaction target in a segmented configuration with 2432 detection units made of long CsI(Tl) finger-shaped scintillator crystals. Califa作为R3B量热仪有10年的预期运营寿命，需要采取措施来确保持久的性能。在本文中，我们介绍了一项系统的研究，该研究经过四年多的运行，对CALICA检测器的6个不同检测单位组成。能量分辨率和光产量在不同条件下评估。测试涵盖了组装的第一探测器单位的老化，并研究了降解检测单元的恢复程序。给出了观察到的降解的可能原因，指向晶体-APD耦合。
CALIFA is the high efficiency and energy resolution calorimeter for the R3B experiment at FAIR, intended for detecting high energy light charged particles and gamma rays in scattering experiments, and is being commissioned during the Phase-0 experiments at FAIR, between 2018 and 2020. It surrounds the reaction target in a segmented configuration with 2432 detection units made of long CsI(Tl) finger-shaped scintillator crystals. CALIFA has a 10 year intended operational lifetime as the R3B calorimeter, necessitating measures to be taken to ensure enduring performance. In this paper we present a systematic study of two groups of 6 different detection units of the CALIFA detector after more than four years of operation. The energy resolution and light output yield are evaluated under different conditions. Tests cover the aging of the first detector units assembled and investigates recovery procedures for degraded detection units. A possible reason for the observed degradation is given, pointing to the crystal-APD coupling.
