Jpn. J. Appl. Phys. 31 (1992) pp. 3688-3694 |Next Article| |Table of Contents|
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Design of a Liquid Xenon Calorimeter for the Observation of Cosmic Gamma Ray Lines in the 1∼100 GeV Region
Science and Engineering Research Laboratory, Waseda University, Kikuicho 17, Shinjuku-ku, Tokyo
1Computer Physics and Experiment Laboratory, Computer Science Division, Faculty of Engineering, Kanagawa University, Rokkaku-bashi, Kanagawa-ku, Yokohama
2Physics Department, Texas R & I University, Kingsville, Texas 78363, USA
(Received July 20, 1992; accepted for publication September 19, 1992)
A liquid xenon calorimeter has recently been designed. The main purpose is to show the capability of observing monochromatic cosmic gamma ray lines in the 1∼100 GeV region. The calorimeter has a geometric factor of ∼1 m2·sr, an energy resolution of ∼0.4% and an angular resolution of about 1 degree for GeV-region gamma rays. These characteristics will meet the conditions required for the observation of gamma ray lines produced by the pair annihilation of hypothetical SUSY heavy Majorana fermions which might exist in the galactic halo as dark matter. The calorimeter is also applicable to the search for point sources emitting gamma rays as well as the investigation of diffuse gamma rays at high energies.
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