Physics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001nimpa.461..256a&link_type=abstract
Nuclear Instruments and Methods in Physics Research Section A, Volume 461, Issue 1-3, p. 256-261.
Physics
11
Scientific paper
A liquid xenon time projection chamber (LXeTPC) has been developed to image cosmic /γ-rays in the energy band 0.2-20 MeV. Its performance as Gamma Ray Imaging Telescope (LXeGRIT instrument) has been tested during a high altitude balloon flight (Spring '99, New Mexico). The detector, with 400 cm2 area and 7 cm drift gap, is filled with 7 l high purity LXe. Both ionization and scintillation light signals are detected to measure the energy deposits and the three spatial coordinates of individual /γ-ray interactions within the sensitive volume. During the pre-flight calibration experiments the LXeGRIT instrument was extensively tested with /γ-ray sources in the laboratory: a /10% FWHM energy resolution at 1 MeV was determined, scaling with /1/sqrt(E). The detector shows a linear response in the energy range 511 keV-4.4 MeV.
Aprile Elena
Chupp Edward L.
Curioni Alessandro
Doke Tadayoshi
Dunphy Philip P.
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