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Systematic effects arising from cosmic rays have been shown to be asignificant threat to space telescopes using high-sensitivity bolometers. TheLiteBIRD space mission aims to measure the polarised Cosmic MicrowaveBackground with unprecedented sensitivity, but its positioning in space willalso render it susceptible to cosmic ray effects. We present an end-to-endsimulator for evaluating the expected scale of cosmic ray effect on theLiteBIRD space mission, which we demonstrate on a subset of detectors on the166 GHz band of the Low Frequency Telescope. The simulator couples the expectedproton flux at L2 with a model of the thermal response of the LFT focal planeand the electrothermal response of its superconducting detectors, producingtime-ordered data which is projected into simulated sky maps and subsequentangular power spectra.

Simulations of systematic effects arising from cosmic rays in the LiteBIRD space telescope, and effects on the measurements of CMB $B$-modes