Scintillating fiber calorimeter as a detector for the observation of GeV cosmic gamma rays

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

doi:10.1117/12.138591

22 December 1992 Scintillating fiber calorimeter as a detector for the observation of GeV cosmic gamma rays

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

Author Affiliations +

Proceedings Volume 1734, Gamma-Ray Detectors; (1992) https://doi.org/10.1117/12.138591
Event: San Diego '92, 1992, San Diego, CA, United States

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.

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Shoji Torii, Katsuaki Kasahara, Tadayoshi Doke, T. Kashiwagi, Jun Kikuchi, Heihachiro Murakami, A. Nakamoto, Toshinori Yuda, Kimiaki Masuda, Y. Muraki, V. V. Akimov, and N. G. Leikov "Scintillating fiber calorimeter as a detector for the observation of GeV cosmic gamma rays", Proc. SPIE 1734, Gamma-Ray Detectors, (22 December 1992); https://doi.org/10.1117/12.138591

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