The Gamma Ray Bursts Monitor onboard BeppoSAX: The Monte Carlo simulation for the response matrix

M. Rapisarda, L. Amati, M.N. Cinti, M. Feroci, E. Costa, P. Collina, G. Zavattini, F. Frontera, L. Nicastro, M. Orlandini, E. Palazzi, D. Dal Fiume

Research output: Contribution to conferencePaper

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Abstract

The Gamma Ray Burst Monitor onboard the BeppoSAX satellite is a secondary function of the anticoincidence shields of the Phoswich Detection System hard X-ray experiment. For this reason the four CsI slabs operating as Gamma Ray Bursts detectors have a not uniformly clear field of view. Actually the other SAX experiments partially obstruct the GRBM FOV in a way that strongly depends both on direction and energy. This peculiarity makes very hard to build-up a real response matrix of the experiment by simply interpolating the on-ground calibration. Therefore a complex activity of Monte Carlo simulation has been started using the MCNP code, in which the entire SAX satellite is described in a 3D geometrical reconstruction. This code is being used for the simulation of the on-ground calibration set-up, and once a good level of confidence is reached on that, it will be used to reconstruct direction, intensity and spectrum of the cosmic Gamma Ray Bursts. In this paper we present the Monte Carlo set-up, discussing the approach to the work and the approximations that need to be done. Then the first results of the simulations are shown and compared, for some monochromatic energies and for several incoming directions, to the results obtained during the on-ground calibrations.
Original languageEnglish
DOIs
Publication statusPublished - 1997
Externally publishedYes
EventProceedings of the 1997 EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII - , United States
Duration: 1 Jan 1997 → …

Conference

ConferenceProceedings of the 1997 EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII
CountryUnited States
Period1/1/97 → …

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Rapisarda, M., Amati, L., Cinti, M. N., Feroci, M., Costa, E., Collina, P., ... Dal Fiume, D. (1997). The Gamma Ray Bursts Monitor onboard BeppoSAX: The Monte Carlo simulation for the response matrix. Paper presented at Proceedings of the 1997 EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII, United States. https://doi.org/10.1117/12.283769