The INTEGRAL mass model and background M-C simulations

Abstract

A detailed mass model of the ESA INTEGRAL gamma-ray satellite is being built. It is used as geometric input to the comprehensive Monte-Carlo simulation suite GGOD to form the INTEGRAL mass model simulation software. The authors present the current status of the mass model project and preliminary background evaluation results for the two main gamma-ray instruments as well as examples of the use of the simulated background data-sets in the optimization of detector designs.