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27 September 2012 The LOFT (Large Observatory for X-ray Timing) background simulations
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The Large Observatory For X-ray Timing (LOFT) is an innovative medium-class mission selected for an assessment phase in the framework of the ESA M3 Cosmic Vision call. LOFT is intended to answer fundamental questions about the behavior of matter in theh very strong gravitational and magnetic fields around compact objects. With an effective area of ~10 m2 LOFT will be able to measure very fast variability in the X-ray fluxes and spectra. A good knowledge of the in-orbit background environment is essential to assess the scientific performance of the mission and to optimize the instrument design. The two main contributions to the background are cosmic diffuse X-rays and high energy cosmic rays; also, albedo emission from the Earth is significant. These contributions to the background for both the Large Area Detector and the Wide Field Monitor are discussed, on the basis of extrensive Geant-4 simulations of a simplified instrumental mass model.
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R. Campana, M. Feroci, E. Del Monte, S. Brandt, C. Budtz-Jørgensen, N. Lund, J. Alvarez, M. Hernanz, and E. Perinati "The LOFT (Large Observatory for X-ray Timing) background simulations", Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84435O (27 September 2012);


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