Validation of a Geant4 full model for the MIXS instrument at BepiColombo

Portillo Caucel, P., Ibarmia, S., Benito Parejo, M., Mas Hesse, J. M., Balado, A., Martindale, A., Pearson, J., Butcher, G., Feldman, C., Bunce, E. 2017. Validation of a Geant4 full model for the MIXS instrument at BepiColombo. 7th European Conference on Radiation and its Effects on Components and Systems (RADECS), 372-376

A full Geant4 model for the BepiColombo MIXS X-ray telescope has been implemented in order to simulate the propagation of fluorescence X-rays through a state-of-the-art micro channel optics (MCP). Our model includes a realistic 3D geometrical description of the instrument, down to micrometer scale for the optics, as well as the physics processes for the reflection of X-ray photons at grazing angles combined with the standard Geant4 electromagnetic interactions. The model has been preliminary validated against design reference simulation software and with experimental test data.

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