SPHERE project: development of the reflected Cherenkov light technique

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Abstract

Based on the experience of successful implementation of the SPHERE-2 experiment, further development of the method for studying PCR by recording the reflected EAS Cherenkov light is planned. In this work, we show the possibility of simultaneous detection of direct and reflected EAS Cherenkov light. The prospect of creating a new SPHERE-3 detector is discussed, and the first simulation results are presented.

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About the authors

E. A. Bonvech

Lomonosov Moscow State University

Author for correspondence.
Email: bonvech@yandex.ru
Russian Federation, Moscow

D. V. Chernov

Lomonosov Moscow State University

Email: bonvech@yandex.ru
Russian Federation, Moscow

V. S. Latypova

Lomonosov Moscow State University

Email: bonvech@yandex.ru
Russian Federation, Moscow

C. J. Azra

Lomonosov Moscow State University

Email: bonvech@yandex.ru
Russian Federation, Moscow

V. I. Galkin

Lomonosov Moscow State University

Email: bonvech@yandex.ru
Russian Federation, Moscow

V. A. Ivanov

Lomonosov Moscow State University

Email: bonvech@yandex.ru
Russian Federation, Moscow

D. A. Podgrudkov

Lomonosov Moscow State University

Email: bonvech@yandex.ru
Russian Federation, Moscow

T. M. Roganova

Lomonosov Moscow State University

Email: bonvech@yandex.ru
Russian Federation, Moscow

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Supplementary files

Supplementary Files
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1. JATS XML
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2. Fig. 1. Examples of events of different types recorded in the SPHERE-2 experiment: a - reflected Cherenkov light of SHAL; b - calibration event; c - ‘long’ noise event; d - ‘short’ noise event; e - event with direct and reflected Cherenkov light

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3. Fig. 2. Spatial distribution function of the ShAL Cherenkov light for an individual ShAL event (a). The modelling points I(R) are marked in grey, the curve indicates the approximating function F according to formula (1). Relative deviation of the approximating curve F from the modelled points (b)

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4. Fig. 3. Preliminary version of the design of the SPHERE-3 detector

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5. Fig. 4. Calculated distributions of Cherenkov photons on the mosaic of the SPHERE-3 detector from the primary proton with energies of 5, 10, and 30 PeV

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