The Wide-Field Monitor is an array of coded-aperture cameras based on large-area linear Silicon Drift Detectors, operating in the 2−50 keV range. Each camera features an instantaneous field of view of ≈ 2 sr, a source location accuracy of < 4′, and a 5σ-sensitivity better than 5 mCrab in 50 ks. This instrument is currently part of the design of the eXTP, STROBE-X and LEM-X space missions. We are currently developing an end-to-end simulator to assess the scientific performances of the instrument as well as to optimize the algorithms for image reconstruction. Firmly rooted in the physics of photon-matter interactions, via both analytic and Monte Carlo algorithms, it is built according to a modular architecture to account for every subsystem involved in the generation of the signal.
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