Design and FLUKA Simulation of Response for Graphene Proton Detector

Protons which come from Galactic Cosmic Rays and radiation belt can pose serious radiation hazards to the electronics systems of spacecraft.Accurate measurement of proton flux and energy can analyze solar activity,aware space situation,and provide data support for the safe operation of spacecraft in orbit.Based on the Time of Fly(TOF)and ΔE-E,the medium and high energy proton detector with wide energy range is designed by combining grapheme with silicon semiconductor.By adding tantalum energy reducing ship between silicon semiconductor detector and energy measuring object,the size of detector is effectively reduced and miniaturized design is realized.The discrimination ability of grapheme proton detector for proton,electron and helium was analyzed by FLUKA.The results show that the particle identification ability of the detector is better than 90%.