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

Volume

2

fYear

2003

fDate

19-25 Oct. 2003

Firstpage

1096

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2003 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8257-9

Type

conf

DOI

10.1109/NSSMIC.2003.1351883

Filename

1351883