Simulating modulated x-ray calibration sources for future x-ray missions using GEANT4

C. P. de Vries; V. Fioretti; J.-W. den Herder; E. Schyns; S. D. Pinto

doi:10.1117/12.2305475

6 July 2018 Simulating modulated x-ray calibration sources for future x-ray missions using GEANT4

C. P. de Vries, V. Fioretti, J.-W. den Herder, E. Schyns, S. D. Pinto

Author Affiliations +

Proceedings Volume 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray; 1069965 (2018) https://doi.org/10.1117/12.2305475
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The XIFU X-ray spectrometer instrument on the future Athena mission needs X-ray calibration sources to calibrate the gains of the individual detector pixels. For this purpose, electronically controlled Modulated X-ray Sources (MXS) are proposed, similar to the calibrations sources used on the Hitomi spacecraft and which will also fly on its successor, XARM. Here we present a simulation package based on the particle transport GEANT4 toolkit. Using this package, we compute the results for different targets and window configurations for the MXS’s. The simulations expose the trade-offs to be made to select the optimum source configuration for the Athena/XIFU and XARM/Resolve spectrometer instruments.

Citation Download Citation

C. P. de Vries, V. Fioretti, J.-W. den Herder, E. Schyns, and S. D. Pinto "Simulating modulated x-ray calibration sources for future x-ray missions using GEANT4", Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 1069965 (6 July 2018); https://doi.org/10.1117/12.2305475

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