21 September 1994 Initial results on calorimetry and imaging of MeV gamma rays with a 10-liter liquid xenon time projection chamber (LXe-TPC)
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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.
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Elena Aprile, Elena Aprile, Aleksey E. Bolotnikov, Aleksey E. Bolotnikov, Dake Chen, Dake Chen, H. Tawara, H. Tawara, Fang Xu, Fang Xu, } "Initial results on calorimetry and imaging of MeV gamma rays with a 10-liter liquid xenon time projection chamber (LXe-TPC)", Proc. SPIE 2305, Gamma-Ray Detector Physics and Applications, (21 September 1994); doi: 10.1117/12.187273; https://doi.org/10.1117/12.187273
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