Development and performance of large fine-pitch germanium strip detectors

Author

Phlips, B.F. ; Nelson, S.O. ; Wulf, E.A. ; Johnson, W.N. ; Kurfess, J.D. ; Amman, M. ; Luke, P.N.

Author_Institution

Naval Res. Lab., Washington, DC, USA

Volume

4

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

2110

Abstract

We present the initial performance results obtained with a double-sided planar germanium strip detector with 1.25 mm pitch and 64 cm² of active area. The detector is 2 cm thick and was manufactured with an amorphous contact technology. The germanium crystal is 10×9×2 cm³ and was extracted from the long direction of a germanium boule. The detector has 64 strips on each side, with one side AC coupled to the front-end electronics and the other side DC coupled to the front-end electronics. An energy resolution of 2.4 keV and a pixellization of 1.25 mm are achieved. A depth resolution of 1 mm was obtained by using a timing technique. Gamma-ray imaging and spectroscopy are demonstrated using diffuse gamma-ray sources and collimators. Images created using coded apertures are also shown.

Keywords

collimators; gamma-ray detection; germanium radiation detectors; nuclear electronics; position sensitive particle detectors; 1.25 mm; 10 cm; 2 cm; 9 cm; amorphous contact technology; coded apertures; collimators; depth resolution; diffuse gamma-ray sources; double-sided planar germanium strip detector; energy resolution; front-end electronics; gamma-ray imaging; gamma-ray spectroscopy; germanium boule; germanium crystal; large fine-pitch germanium strip detectors; pixellization; timing technique; Amorphous materials; Collimators; Detectors; Energy resolution; Germanium; Manufacturing; Nuclear imaging; Spectroscopy; Strips; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Type

conf

DOI

10.1109/NSSMIC.2004.1462679

Filename

1462679