XMM Users' Handbook


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ESim - The EPIC Simulator

ESim simulates the properties of both types of EPIC cameras, MOS and pn.

The two camera types are fundamentally different, the MOS chips, e.g., being front-illuminated, while the pn CCDs are back-illuminated. ESim models the interaction of X-ray photons with the CCDs and records the results in output files. These output files contain event lists, as they would also be obtained during real observations in orbit.

ESim, as the other instrument simulators, is capable of simulating all science data acquisition modes of the detectors. Other parts of ESim simulate event recognition patterns etc., including parts of the XMM onboard software.

ESim currently comprises routines to model the following features:


next up previous contents
Next: RSim - The RGS Up: SciSim components Previous: MSim - The Mirror
European Space Agency - XMM Science Operations Centre