Event-by-event study of CR composition with the SPHERE experiment using the 2013 data

24th European Cosmic Ray Symposium

Antonov, R.A.^1 ; Aulova, T.V.^1 ; Bonvech, E.A.^1 ; Chernov, D.V.^1 ; Dzhatdoev, T.A.^1 ; Finger, Mich.^2,3 ; Finger, Mir.^2,3 ; Galkin, V.I.^1,4 ; Podgrudkov, D.A.^1,4 ; Roganova, T.M.^1

Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Leninskie gory 1-2, Moscow

119991, Russia^1

Faculty of Mathematics and Physics, Charles University, Ovocn trh 3-5, Praha 1, Prague

116 36, Czech Republic^2

Joint Institute for Nuclear Research, Joliot-Curie 6, Moscow region, Dubna

141980, Russia^3

Faculty of Physics, Lomonosov Moscow State University, Leninskie gory 1-2, Moscow

119991, Russia^4

关键词: Cherenkov light;    Cherenkov radiations;    Event studies;    Extensive air showers;    Lake Baikal;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/632/1/012090/pdf
DOI  :  10.1088/1742-6596/632/1/012090

来源: IOP

【 摘 要 】

We present an event-by-event study of cosmic ray (CR) composition with the reflected Cherenkov light method. The fraction of CR light component above 5 PeV was reconstructed using the 2013 run data of the SPHERE experiment which observed optical Vavilov-Cherenkov radiation of extensive air showers, reflected from snow surface of Lake Baikal. Additionally, we discuss a possibility to improve the elemental groups separability by means of multidimensional criteria.