Property investigation of the wedge-shaped CsI(Tl) crystals for a charged-particle telescope
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 ΔE - 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 ΔE - E telescope. The performance of the two types of CsI(Tl) crystals are interpreted based on Geant4 simulation results.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- October 2021
- DOI:
- 10.1016/j.nima.2021.165637
- Bibcode:
- 2021NIMPA101365637L
- Keywords:
-
- Wedge-shaped CsI(Tl) crystal;
- Particle identification;
- Light output non-uniformity