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Proceedings Paper

Preliminary results from the 1999 balloon flight of the Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT)
Author(s): Elena Aprile; Uwe G. Oberlack; Alessandro Curioni; Valeri Egorov; Karl-Ludwig Giboni; Sandro Ventura; Tadayoshi Doke; Jun Kikuchi; Kyoko Takizawa; Edward L. Chupp; Philip P. Dunphy
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Paper Abstract

LXeGRIT is a balloon-borne Compton telescope employing a large volume liquid xenon time projection chamber (LXe-TPC) as the central (gamma) -ray detector. It is designed to image (gamma) - rays in the energy range of approximately 200 keV to 20 MeV, with an angular resolution of about 3 degrees (1 sigma) at 2 MeV, within a field-of-view (FOV) of about 1 sr. The detector's energy and three-dimensional spatial resolution as measured during pre-flight calibration experiments, are (Delta) E1xe/E equals 8.8% (root)1MeV/E and < 1 mm RMS, respectively. The detection efficiency for Compton events varies between 1.5% and 4% depending on energy and event selection. We describe the instrument as flown on May 7, 1999 and review its overall performance at balloon altitude. The launch occurred at 13:26:54 UT from Ft. Sumner, New Mexico and the flight was terminated about 9 hours later. The Crab was in the instrument FOV for a few hours. Analysis of these data is in progress.

Paper Details

Date Published: 13 December 2000
PDF: 16 pages
Proc. SPIE 4140, X-Ray and Gamma-Ray Instrumentation for Astronomy XI, (13 December 2000); doi: 10.1117/12.409128
Show Author Affiliations
Elena Aprile, Columbia Univ. (United States)
Uwe G. Oberlack, Columbia Univ. (United States)
Alessandro Curioni, Columbia Univ. (United States)
Valeri Egorov, Columbia Univ. (United States)
Karl-Ludwig Giboni, Columbia Univ. (United States)
Sandro Ventura, Columbia Univ. and INFN (Italy)
Tadayoshi Doke, Waseda Univ. (Japan)
Jun Kikuchi, Waseda Univ. (Japan)
Kyoko Takizawa, Waseda Univ. (Japan)
Edward L. Chupp, Univ. of New Hampshire (United States)
Philip P. Dunphy, Univ. of New Hampshire (United States)

Published in SPIE Proceedings Vol. 4140:
X-Ray and Gamma-Ray Instrumentation for Astronomy XI
Kathryn A. Flanagan; Oswald H. W. Siegmund, Editor(s)

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