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Proceedings Paper

Initial results on calorimetry and imaging of MeV gamma rays with a 10-liter liquid xenon time projection chamber (LXe-TPC)
Author(s): Elena Aprile; Aleksey E. Bolotnikov; Dake Chen; H. Tawara; Fang Xu
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Paper Abstract

The experiment LXe-CAT (Liquid Xenon-Coded Aperture Telescope), which we have proposed for (gamma) -ray astrophysics observations in the 300 keV - 10 MeV energy range, uses a Liquid Xenon Time Projection Chamber (LXe-TPC) as a position sensitive (gamma) -ray detector, and a coded aperture mask to provide a telescope with an angular resolution of 30 ft over a field of view (FOV) of 28 degree(s) X 28 degree(s). The point source localization accuracy is about 2 ft for a 10(sigma) source. To demonstrate the spectroscopy and imaging capabilities of the LXe-TPC as a (gamma) -ray detector we have designed, built and are currently testing a 10 liter prototype with a sensitive area of approximately 400 cm2 and an active liquid depth of 5 cm. Studies on stability, spectroscopy and imaging response of this detector to various (gamma) -ray sources will be presented. The unique capability of the LXe-TPC to identify and reject background events based on Compton kinematics reconstruction has also been demonstrated.

Paper Details

Date Published: 21 September 1994
PDF: 18 pages
Proc. SPIE 2305, Gamma-Ray Detector Physics and Applications, (21 September 1994); doi: 10.1117/12.187273
Show Author Affiliations
Elena Aprile, Columbia Univ. (United States)
Aleksey E. Bolotnikov, Columbia Univ. (United States)
Dake Chen, Columbia Univ. (United States)
H. Tawara, Columbia Univ. (United States)
Fang Xu, Columbia Univ. (United States)

Published in SPIE Proceedings Vol. 2305:
Gamma-Ray Detector Physics and Applications
Elena Aprile, Editor(s)

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