1. Modeling of low-energy charged particles passage through GAMMA-400 gamma-telescope thermal insulation and two- layer plastic scintillation detectors used as anticoincidence shield National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute) International Conference on Particle Physics and Astrophysics (ICPPA 2015) 2015 October 8, Moscow Evgeniy Chasovikov, Irene Arkhangelskaja, Arkdiy Galper, Andrey Arkhangelskij, Maxim Kheymits, Yuriy Yurkin, Aleksey Perfil`ev

4. 1MeV electron energy loss in upper layer of AC top.

5. 3MeV electron energy loss in upper layer of AC top.

6. 10MeV electron energy loss in upper layer of AC top.

7. 30MeV proton energy loss in upper layer of AC top.

8. 100MeV proton energy loss in upper layer of AC top.

9. Conclusion Passage of low-energy charged particles through GAMMA-400 gamma- telescope thermal insulation and two-layer plastic scintillation detectors used as anticoincidence shield was modeled 84% of 1 MeV electrons were fully absorbed by thermal insulation Other modeled particles are absobed by the anti-cincidence systems. Low-energy charge particle detectors should be put outside of thermal insulation.