Property investigation of the wedge-shaped CsI(Tl) crystals for a charged-particle telescope

• DOI: 10.1016/j.nima.2021.165637
• Publication Date: 2021-07-14T15:48:33Z
• Authors: G. Li; J.L. Lou; Y.L. Ye; H. Hua; H. Wang; J.X. Han; W. Liu; S.W. Bai; Z.W. Tan; K. Ma; J.H. Chen; L.S. Yang; S.J. Wang; Z.Y. Hu; H.Z. Yu; H.Y. Zhu; B.L. Xia; Y. Jiang; Y. Liu; X.F. Yang; Q.T. Li; J.Y. Xu; J.S. Wang; Y.Y. Yang; J.B. Ma; R.F. Chen; P. Ma; Z. Bai; F.F. Duan; L.Y. Hu; J.W. Li; Y, Li; Y.S. Song; Suyalatu Zhang; M.R. Huang
• Keywords: 0103 physical sciences; 01 natural sciences

Abstract Two types of wedge-shaped CsI(Tl) crystals were designed to be placed behind an annular double-sided silicon detector to identify light charged-particles with the Δ E − E method. The properties of the CsI(Tl) detectors with different shapes and sizes were investigated using an α source and a radioactive beam of 15C. The larger crystal was found to have better energy resolution, smaller light output non-uniformity, as well as better particle identification capability, and was finally adopted to form the Δ E - E telescope. The performance of the two types of CsI(Tl) crystals are interpreted based on Geant4 simulation results.