New method of electrons and protons separation in the calorimeter of the PAMELA instrument

International Conference on Particle Physics and Astrophysics

物理学;天文学

Kleymenova, S.O.^1 ; Mikhailov, V.V.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow

115409, Russia^1

关键词: Electromagnetic imaging;    Energy ranges;    High granularity;    Particle tracks;    Proton rejection;    Single-strip;    Spatial reconstruction;    Total depths;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012021/pdf
DOI  :  10.1088/1742-6596/798/1/012021

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The PAMELA experiment on board the Resurs DK satellite was equipped with electromagnetic imaging calorimeter which comprises 44 silicon planes interleaved with 22 plates of tungsten absorber (total depth 16,3X0). High granularity of calorimeter allows an accurate spatial reconstruction of the shower development. New method of separation of electrons and protons based on single strip distribution outside of main particle track is discussed. Monte-Carlo simulation shows that by adding this method the proton rejection power of the instrument can be increased several times in energy range from 1 up to ∼200 GeV.