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Proceedings Paper

Preliminary background prediction for the INTEGRAL x-ray monitor JEM-X
Author(s): Marco Feroci; Enrico Costa; Carl Budtz-Joergensen; Herbert W. Schnopper; Niels J. Westergaard; Massimo Rapisarda
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Paper Abstract

The JEM-X (joint European x-ray monitor) experiment will be flown onboard the ESA's INTEGRAL satellite. The instrumental background level of the two JEM-X twin detectors will depend on several parameters, among which the satellite orbit and mass distribution, and the detectors materials play a major role. Based on the information available at the present stage of the emission design, we have computed the instrumental background to be expected because of two main background components: direct diffuse x-ray background and secondary photons originated by the interactions of the primary cosmic rays with the spacecraft structures. This calculation has been carried out by means of a Monte Carlo simulation using the code MCNP. The background due to on- orbit material activation and to the primary cosmic rays direct interactions with the detecting medium has not been considered. The INTEGRAL satellite structure is only now being completely defined and the details of the instrument design are still under evolution. The present background estimation can therefore be only preliminary and based on some reasonable approximations on the radiation environment in which the INTEGRAL experiments will operate.

Paper Details

Date Published: 18 October 1996
PDF: 8 pages
Proc. SPIE 2806, Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions, (18 October 1996); doi: 10.1117/12.253990
Show Author Affiliations
Marco Feroci, Istituto di Astrofisica Spaziale (Italy)
Enrico Costa, Istituto di Astrofisica Spaziale (Italy)
Carl Budtz-Joergensen, Danish Space Research Institute (Denmark)
Herbert W. Schnopper, Danish Space Research Institute (United States)
Niels J. Westergaard, Danish Space Research Institute (Denmark)
Massimo Rapisarda, Sezione de Neutronica Applicata/ENEA (Italy)

Published in SPIE Proceedings Vol. 2806:
Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions
Brian D. Ramsey; Thomas A. Parnell, Editor(s)

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