Space-borne MeV Compton-Telescope background and the means to suppress it

Details Space-borne MeV Compton-Telescope background and the means to suppress it Space-borne MeV Compton-Telescope background and the means to suppress it

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spie.7385e...1r&link_type=abstract

International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologie

Statistics

Applications

Scientific paper

Gamma-ray astronomy in the MeV range suffers from weak fluxes from sources and high background in the nuclear energy range. The background comes primarily from neutron-induced gamma rays with the neutrons being produced by cosmic-ray interactions in the Earth's atmosphere, the spacecraft and the instrument. Compton telescope designs often suppress this background by requiring coincidences in multiple detectors and a narrow time-of-flight (ToF) acceptance window. The COMPTEL experience on the Compton Gamma Ray Observatory shows that a 1.5-ns ToF window is insufficiently narrow to achieve the required low background count rate. Furthermore, neutron interactions in the detectors themselves generate an irreducible background. Judicious choices of instrument materials and new spacecraft designs improve the situation. However, large gains come from new scintillator technology that combines intrinsic neutron insensitivity with exceptional speed to reduce the instrument background rate by upwards of 90%, thereby greatly improving the sensitivity of searches and measurements, while simultaneously improving energy and angle resolution.

Affiliated with

Also associated with

No associations

Rating

Space-borne MeV Compton-Telescope background and the means to suppress it does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Space-borne MeV Compton-Telescope background and the means to suppress it, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Space-borne MeV Compton-Telescope background and the means to suppress it will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-770391