Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1734..220t&link_type=abstract
In: Gamma-ray detectors; Proceedings of the Meeting, San Diego, CA, July 21, 22, 1992 (A93-30101 11-35), p. 220-230.
Astronomy and Astrophysics
Astronomy
Calorimeters, Gamma Ray Astronomy, Gamma Ray Telescopes, Radiation Detectors, Scintillating Fibers, Cos-B Satellite, Low Cost, Pair Production, Spaceborne Astronomy
Scientific paper
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.
Doke Tadayoshi
Kasahara Katsuaki
Kashiwagi Takanari
Kikuchi Jun
Masuda Kazuhiko
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