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Proceedings Paper

Scintillating fiber calorimeter as a detector for the observation of GeV cosmic gamma rays
Author(s): Shoji Torii; Katsuaki Kasahara; Tadayoshi Doke; T. Kashiwagi; Jun Kikuchi; Heihachiro Murakami; A. Nakamoto; Toshinori Yuda; Kimiaki Masuda; Y. Muraki; V. V. Akimov; N. G. Leikov
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Paper Abstract

A scintillating fiber sampling calorimeter telescope (SSCT) intended to be operated onboard a satellite for cosmic gamma-ray observation in the range from 200 MeV to 200 GeV is presented. SSCT consists of a target part and a main part that includes a calorimeter with imaging capability, which are separated by a distance of 60-70 cm. A gamma ray enters the target and is converted into a pair of electrons which in turn develops into an electron-photon cascade that is observed in the main part. The gamma-ray direction is measured by pointing the energy-weighted centers observed in the two parts. The shower particle are detected using 2 mm square fibers which are bundled into a 2 mm thick flat belt. A pair of belts crossing at a right angle is inserted between lead plates. Experimental results show that the energy resolution of the calorimeter is 20 percent/sq root E(GeV) below a few GeV. The angular resolution is 1.6 deg at 1 GeV and 0.34 deg at 10 GeV.

Paper Details

Date Published: 22 December 1992
PDF: 11 pages
Proc. SPIE 1734, Gamma-Ray Detectors, (22 December 1992); doi: 10.1117/12.138591
Show Author Affiliations
Shoji Torii, Kanagawa Univ. (Japan)
Katsuaki Kasahara, Kanagawa Univ. (Japan)
Tadayoshi Doke, Waseda Univ. (Japan)
T. Kashiwagi, Waseda Univ. (Japan)
Jun Kikuchi, Waseda Univ. (Japan)
Heihachiro Murakami, Rikkyo Univ. (Japan)
A. Nakamoto, Rikkyo Univ. (Japan)
Toshinori Yuda, Univ. of Tokyo (Japan)
Kimiaki Masuda, Saitama College of Health (Japan)
Y. Muraki, Nagoya Univ. (Japan)
V. V. Akimov, Space Research Insitute (Russia)
N. G. Leikov, Space Research Insitute (Russia)

Published in SPIE Proceedings Vol. 1734:
Gamma-Ray Detectors
Elena Aprile, Editor(s)

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