Fig. 1. Energy spectrum of particle captured at GEO (a) Proton spectrum, (b) Electron spectrum

Fig. 2. Model design scheme

Fig. 3. Detector model for the simulation (a) Radiation diagram of the detector, (b) Profile map

Fig. 4. Change trend of the electron range in aluminum as a function of energy

Fig. 5. Radiation-shielding effect of different metals (a) The relationship between shielding layer thickness and electron energy, (b) Thickness required to shield protons, (c) Mass required to shield protons

Fig. 6. Total dose-curve for aluminum

Fig. 7. Relationship between shield thickness and absorbed dose

Fig. 8. Relationship between radiation dose and photon number

Fig. 9. Relationship between radiation dose and absorbed dose

Fig. 10. Relationship between radiation source position and photon number

Fig. 11. Effect of electron energy on detection efficiency

Fig. 12. Relationship between energy and detector response coefficient