Performances of a Silicon drift chamber as fast scintillator photodetector for γ-ray spectroscopy

Author

Fiorini, C. ; Longoni, A. ; Perotti, F. ; Labanti, C. ; Rossi, E. ; Lechner, P. ; Strüder, L.

Author_Institution

Dipt. di Elettronica e Inf., Politecnico di Milano, Italy

fYear

1997

fDate

9-15 Nov 1997

Firstpage

217

Abstract

The performances of a Si drift chamber (SDC), having a diameter of 3 mm, as scintillation light photodetector have been experimentally evaluated on a prototype of γ-ray detector employing a GSO crystal of similar cross-section. This detector presents a minimum energy threshold of about 50 keV at room temperature or 25 keV at 0°C. The measured energy resolution at room temperature is 22.65% and 8.73% FWHM at 122 keV and 662 keV respectively. These performances were obtained by using a shaping time of 0.5 μs, which allows to operate at a high γ-ray interaction rate. The effect of the SDC drift-time on the detector gain has been also evaluated

Keywords

gamma-ray detection; gamma-ray spectroscopy; silicon radiation detectors; solid scintillation detectors; γ-ray detector; γ-ray spectroscopy; 0.5 mus; 25 keV; 273 K; 293 K; 3 mm; 50 keV; GSO; Si; Si drift chamber; drift-time; energy resolution; fast scintillator photodetector; minimum energy threshold; room temperature; shaping time; Energy measurement; Energy resolution; Gamma ray detection; Gamma ray detectors; Performance evaluation; Photodetectors; Prototypes; Silicon; Solid scintillation detectors; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1997. IEEE

Conference_Location

Albuquerque, NM

ISSN

1082-3654

Print_ISBN

0-7803-4258-5

Type

conf

DOI

10.1109/NSSMIC.1997.672572

Filename

672572