Initial results on calorimetry and imaging of MeV gamma rays with a 10-liter liquid xenon time projection chamber (LXe-TPC)

Details Initial results on calorimetry and imaging of MeV gamma rays with a 10-liter liquid xenon time projection chamber (LXe-TPC) Initial results on calorimetry and imaging of MeV gamma rays with a 10-liter liquid xenon time projection chamber (LXe-TPC)

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2305...33a&link_type=abstract

Proc. SPIE Vol. 2305, p. 33-50, Gamma-Ray Detector Physics and Applications, Elena Aprile; Ed.

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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.

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