As part of the second phase of Advanced Virgo upgrade program, instrumented
    baffles are being constructed to be installed around the end mirrors in the
    main arms, in continuation of what has been implemented for the input mode
    cleaner end mirror during phase I. These baffles will be equipped with
    photosensors, allowing for real-time monitoring of the stray light around the
    mirrors. In this paper, we present optical simulations of the light
    distribution in the detector main cavities to assess the ability of the sensors
    to effectively monitor misalignment and defects on the mirrors surface and to
    play a role in the pre-alignment of the interferometer.

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