Monte Carlo Study of a Xenon Advanced Compton Telescope

Details Monte Carlo Study of a Xenon Advanced Compton Telescope Monte Carlo Study of a Xenon Advanced Compton Telescope

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004head....8.1614a&link_type=abstract

American Astronomical Society, HEAD meeting #8, #16.14; Bulletin of the American Astronomical Society, Vol. 36, p.931

Computer Science

Performance

Scientific paper

As part of the Advanced Compton Telescope (ACT) study, we have simulated the performance of a double scatter telescope concept based on liquid xenon time projection chamber (LXeTPC) modules, arranged to cover the large geometrical area required by the demanding ACT sensitivity while maintaining excellent efficiency and background rejection capability. The unitary TPC module is similar in size to the detector successfully developed and tested as balloon borne Compton telescope prototype within the LXeGRIT program. Compared with this prototype, however, the energy resolution is dramatically improved, by fully exploiting both the ionization and the fast scintillation signals available in LXe, with optimized readout schemes. The excellent coincidence timing measured with compact phototubes operating in the liquid allows to re-introduce a time-of-flight (TOF) measurement, in a COMPTEL like D1/D2 configuration but with less than 20 cm separation between the two detector arrays. We will show results from a Monte Carlo study of a XeACT, which combines the intrinsic strength of large volume, fully homogeneous, 3D position sensitive detectors like TPCs, with the additional background rejection power and unique event sequencing of a TOF measurement.

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