Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725420r&link_type=abstract
American Astronomical Society, AAS Meeting #217, #254.20; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
I present a library of simulated cosmic ray events on JWST HgCdTe and SiAs detectors. The cosmic rays are calculated for different levels of solar activity, taking into account the relative frequency of the most abundant nucleons (H, He, C, N, O, Fe) and their energy. A shielding of 100mil Al equivalent thickness is assumed. The cosmic rays are traced through the detector material assuming they impact a random point within a pixel and are isotropically distributed. The energy losses are calculated using state of the art modeling for the different detector material, taking into account the different stoichiometric ratios and density for HgCdTe of different cutoff wavelengths and assuming optimal detector thickness. The effect of interpixel capacitance is finally added to the charges generated by the cosmic rays through convolution with a coupling filter function.
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