Title :
Low-angle scattering of protons on the XMM-Newton optics and effects on the on-board CCD detectors
Author :
Nartallo, Ramon ; Daly, Eamonn ; Evans, Hugh ; Nieminen, Petteri ; Lei, Fan ; Truscott, Peter
Author_Institution :
Rhea Syst. SA, Belgium
fDate :
12/1/2001 12:00:00 AM
Abstract :
Monte Carlo simulations are presented where protons are shown to propagate through X-ray telescope optics by grazing incidence scattering processes. If these protons reach charge coupled device (CCD) detectors in sufficient numbers, they can induce a radiation background, and at certain energies, the nonionising dose can cause degradation of the charge transfer efficiency (CTE). In the course of this work, the telescope optics of the Chandra and XMM-Newton observatories were simulated
Keywords :
CCD image sensors; Monte Carlo methods; X-ray astronomy; X-ray optics; astronomical observatories; astronomical telescopes; astronomy computing; charge exchange; cosmic background radiation; proton effects; Chandra observatory; Monte Carlo simulations; X-ray telescope optics; XMM-Newton observatory; XMM-Newton optics; charge coupled device detectors; charge transfer efficiency degradation; grazing incidence scattering processes; low-angle proton scattering; nonionising dose; on-board CCD detectors; proton propagation; radiation background; telescope optics; Charge coupled devices; Charge transfer; Charge-coupled image sensors; Degradation; Optical propagation; Optical scattering; Protons; Radiation detectors; Telescopes; X-ray scattering;
Journal_Title :
Nuclear Science, IEEE Transactions on
