Long term background behaviour of LEGRI CdZnTe detectors: theoretical predictions and observations

Details Long term background behaviour of LEGRI CdZnTe detectors: theoretical predictions and observations Long term background behaviour of LEGRI CdZnTe detectors: theoretical predictions and observations

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.459..627p&link_type=abstract

In: Exploring the gamma-ray universe. Proceedings of the Fourth INTEGRAL Workshop, 4-8 September 2000, Alicante, Spain. Editor:

Computer Science

Legri, Proton Background

Scientific paper

Trapped protons are the main source of background in LEO orbits through the generation of unstable isotopes within the detectors and surrounding materials. Delayed radioactivity decays are one of the most important contributions to the observed background. Accurate modelling for LEGRI (Low Energy Gamma-Ray Imager) on-board MINISAT-01 mission has been performed using new experimental data together with two of the most widely used prediction codes (semiempirical expressions of Silberberg & Tsao and the GEANT/GCALOR package). Finally, Silberberg & Tsao expressions have been used to model the CdTeZn background behaviour for the long-term component. In this paper we present a comparative analysis of the experimental data obtained during the first two years of LEGRI operation with the results provided by our theoretical modelling. An unexpected good agreement is found. The fast increase of the background counting ratio in the first month followed by a early flat response for the rest of the operation time is very well reproduced by the theoretical model. These results also show the capability of the CdZnTe detectors to survive under high proton doses in space without degradation.

Affiliated with

Also associated with

No associations

Rating

Long term background behaviour of LEGRI CdZnTe detectors: theoretical predictions and observations 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 Long term background behaviour of LEGRI CdZnTe detectors: theoretical predictions and observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long term background behaviour of LEGRI CdZnTe detectors: theoretical predictions and observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1489272