Title :
Proton irradiation response of CsI(Tl) crystals for the GLAST calorimeter
Author :
Bergenius, S. ; Carius, S. ; Carlson, P. ; Grove, J.E. ; Johansson, G. ; Klamra, W. ; Nilsson, L. ; Pearce, M.
Author_Institution :
Dept. of Phys., R. Inst. of Technol., Stockholm, Sweden
Abstract :
The electromagnetic calorimeter of the Gamma-Ray Large Area Space Telescope (GLAST) consists of 16 towers of CsI(Tl) crystals. Each tower contains 8 layers of crystals (each 326.0×26.7×19.9 mm3) arranged in a hodoscopic fashion. The crystals are read out at both ends with photodiodes. Crystals produced by Amcrys-H (Ukraine) are used. A full size crystal was irradiated with a 180 MeV proton beam and the radiation induced attenuation was measured. The induced radioactivity of the crystal was also studied. In this paper we will discuss the damage due to proton irradiation and compare this with the expected in-orbit background flux.
Keywords :
aerospace instrumentation; caesium compounds; cosmic ray apparatus; particle calorimetry; proton effects; radiation hardening (electronics); solid scintillation detectors; thallium; CsI(Tl) crystals; GLAST calorimeter; Gamma-Ray Large Area Space Telescope; electromagnetic calorimeter; hodoscopic fashion; in-orbit background flux; proton irradiation; proton irradiation response; Crystals; Electromagnetic radiation; Electron traps; Extraterrestrial measurements; Particle beams; Photodiodes; Poles and towers; Protons; Telescopes; Testing;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1351883
