Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprb17055a&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
The application of a 3-D imaging detector, such as a liquid xenon time projection chamber (LXeTPC), as a Compton telescope for MeV gamma-rays relies on the precise measurement of the energy deposits and interaction locations on an eveny-by-event basis. In order to use this information to infer the original gamma-ray direction, the correct sequence of the multiple Compton scatterings has to be identified. The first application of a LXeTPC for imaging cosmic gamma-rays was realized with the balloon-borne LXeGRIT instrument. We review the event reconstruction techniques and their performance on LXeGRIT data, both from calibration sources and from the 2000 balloon flight. We show that background rejection is a direct consequence of the Compton sequence reconstruction of LXeGRIT events.
Aprile Elena
Curioni Alessandro
Giboni Karl Ludwig
Kobayashi Masanori
Oberlack Uwe G.
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