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Proceedings Paper

The development of gamma-ray burst polarimeter for a small satellite
Author(s): Shuichi Gunji; Takeshi Nakamori; Mitsumasa Sakano; Jun Katagiri; Tatsuya Kishikawa; Koki Kato; Sayaka Kimura; Mika Takakura; Yuma Oikawa; Tatsuya Ueda
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Paper Abstract

We are developing a gamma-ray burst polarimeter for a small satellite. It is Compton-scattering-type polarimeter which consists of segmented plastic scintillator and segmented GAGG scintillator. The scattering position in the plastic scintillator and the absorption position in the GAGG scintillator for incident hard X rays can be read out by multi-anode photomultipliers and avalanche photodiodes, respectively. The detection efficiency and the modulation factor amount to about 21% and 39% at 60 keV, respectively. The geometrical area for one module is about 300 cm2. If two modules will be installed, the polarimeters will measure the polarization for about thirty-five GRBs in two years. Through the observation of the polarization, the radiation mechanism of gamma-ray bursts will be clarified.

Paper Details

Date Published: 24 July 2014
PDF: 9 pages
Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91444J (24 July 2014); doi: 10.1117/12.2054708
Show Author Affiliations
Shuichi Gunji, Yamagata Univ. (Japan)
Takeshi Nakamori, Yamagata Univ. (Japan)
Mitsumasa Sakano, Yamagata Univ. (Japan)
Jun Katagiri, Yamagata Univ. (Japan)
Tatsuya Kishikawa, Yamagata Univ. (Japan)
Koki Kato, Yamagata Univ. (Japan)
Sayaka Kimura, Yamagata Univ. (Japan)
Mika Takakura, Yamagata Univ. (Japan)
Yuma Oikawa, Yamagata Univ. (Japan)
Tatsuya Ueda, Yamagata Univ. (Japan)

Published in SPIE Proceedings Vol. 9144:
Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Jan-Willem A. den Herder; Mark Bautz, Editor(s)

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