Estimate of radiation damage to low-level electronics of the RF system in the LHC cavities arising from beam gas collisions

Monte Carlo simulations have been performed to estimate the radiation damage induced by high-energy hadrons in the digital electronics of the RF low-level systems in the LHC cavities. High-energy hadrons are generated when the proton beams interact with the residual gas. The contributions from various elements—vacuum chambers, cryogenic cavities, wideband pickups and cryomodule beam tubes—have been considered individually, with each contribution depending on the gas composition and density. The probability of displacement damage and single event effects (mainly single event upsets) is derived for the LHC start-up conditions.