SIMULGEO Simulation and Reconstruction Software for Opto-Geometrical Systems

SIMULGEO is a geometrical software developed for the position monitoring system of the CMS detector at the LHC accelerator. This software is capable to model opto-geometrical systems including error propagation and geometrical reconstruction. Thanks to a special description method, any opto-geometrical system can easily be described and analysed. This report explains how to use SIMULGEO, describes the mathematical core, shows the principle of the algorithm of modelling and describes the optimisation made to use SIMULGEO for large systems.