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20 April 2024 |
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Spectroscopy and Imaging Performance of the Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT) | | E. Aprile
; A. Curioni
; V. Egorov
; K.-L. Giboni
; U.G. Oberlack ; S. Ventura ; T. Doke
; J. Kikuchi
; K. Takizawa ; E.L. Chupp
; P.P. Dunphy
; | | Date: |
13 Dec 2000 | | Subject: | astro-ph | | Affiliation: | Columbia University); S. Ventura (Padua University, Italy); T. Doke, J. Kikuchi, K. Takizawa (Waseda University, Japan); E.L. Chupp, P.P. Dunphy (University of New Hampshire | | Abstract: | LXeGRIT is a balloon-borne Compton telescope based on a liquid xenon time projection chamber (LXeTPC) for imaging cosmic g-rays in the energy band of 0.2-20 MeV. The detector, with 400 cm$^2$ area and 7 cm drift gap, is filled with high purity LXe. Both ionization and scintillation light signals are detected to measure the energy deposits and the three spatial coordinates of individual -ray interactions within the sensitive volume. The TPC has been characterized with repeated measurements of its spectral and Compton imaging response to -rays from radioactive sources such as
a, s, yt and Am-Be. The detector shows a linear response to -rays in the energy range 511 keV -4.4 MeV, with an energy resolution (FWHM) of $ Delta E/E=8.8% sqrt{1MeV /E}$. Compton imaging of yt -ray events with two detected interactions is consistent with an angular resolution of $sim$ 3 degrees (RMS) at 1.8 MeV. | | Source: | arXiv, astro-ph/0012297 | | Services: | Forum | Review | PDF | Favorites | |
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