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ID 20649
file
creator
Nakamoto, Tatsuya
Sawamoto, Naoyuki
Uno, Shingo
Ohsugi, Takashi
Tajima, Hiroyasu
Takahashi, Tadayuki
Mitani, Takefumi
Tanaka, Takaaki
Nakazawa, Kazuhiro
subject
Silicon Strip Detector
Compton Camera
VA-chip
Gamma-ray detector
NDC
Astronomy. Space sciences
abstract
Double-sided silicon strip detectors (DSSD) provide a very promising technology for constructing a Compton Camera, which is expected to provide a high-sensitivity soft gamma-ray observation in the 0.1–20 MeV energy range. The merits of DSSD are the high energy resolution, high scattering efficiency, low radio-activation in the orbit, moderate radiation hardness, smaller Doppler broadening, large size, and stable performance. A key feature for optimal performance is the low noise level of the DSSD and the attached frontend electronics. We minimized the noise by optimization of the electrode geometry of the DSSD. We have thus obtained an energy resolution of 1.3 keV (FWHM) for 60 keV and 122 keV at -10◦C. It was found that the detection efficiency for gamma-rays was uniform over the DSSD and the signal charge split between neighboring strips was not significant. We also confirmed that the Compton imaging by two DSSDs achieved a good angular resolution close to the Doppler-broadening limit.
journal title
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
volume
Volume 541
issue
Issue 1-2
start page
342
end page
349
date of issued
2005-04-01
publisher
Elsevier Science B.V.
issn
0168-9002
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2005 Elsevier B.V.
relation url
department
Graduate School of Science