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Simulations and Mitigation of Pile-Up in XMM CCD Instruments

Lumb, D. H.

Simulations of the XMM EPIC instruments are presented. They suggest the correct operating mode must be chosen to ensure that spectral analysis of the data is not compromised by `pile-up' effects. The performance is contrasted with the CHANDRA AXAF CCD Imaging Spectrometer, showing how the higher effective area but better over-sampling of its mirro…