Method for measuring the PCR proton spectrum in the energy range of &gt; 1016 eV

Anokhina, A.; Antonov, R. A.; Bonvech, E. A.; Галкин, В. И.; Dzhatdoev, T.; Kirillov, A. A.; Роганова, Т. М.; Чернов, Д. В.; Shaulov, S. B.

doi:10.3103/s1068335609050042

Cited by 14 publications

(11 citation statements)

References 2 publications

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“…1. As the first step, the full Monte Carlo simulation of the lateral distribution function (LDF) of the EAS Cherenkov light, as well as the time structure of the shower was performed using the standard code CORSIKA6.500 [19] (for more details see [20]- [22]). All results presented here are based on the QGSJET-I high energy hadronic model [23] and the GHEISHA low energy hadronic model [24].…”

Section: A Methods For the Primary Spectrum And Composition Reconstrucmentioning

confidence: 99%

“…The primary composition study in the present work is based on the LDF steepness parameter, defined as the ratio of the number of Cherenkov photons in the circle with the radius of 67 m to the same number in the ring with the radii of 67 m and 134 m [21]. The parameter allows to select some fraction of the light nuclei [20]- [21]. In present work protons stand for light nuclei, and Iron for heavy ones.…”

Section: A Methods For the Primary Spectrum And Composition Reconstrucmentioning

confidence: 99%

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Results on the primary CR spectrum and composition reconstructed with the SPHERE-2 detector

Antonov

Beschapov

Bonvech

et al. 2013

J. Phys.: Conf. Ser.

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First preliminary results of the balloon-borne experiment SPHERE-2 on the allnuclei primary cosmic rays (PCR) spectrum and primary composition are presented. The primary spectrum in the energy range 10 16 -5 · 10 17 eV was reconstructed using characteristics of Vavilov-Cherenkov radiation of extensive air showers (EAS), reflected from a snow surface. Several sources of systematic uncertainties of the spectrum were analysed. A method for separation of the primary nuclei' groups based on the lateral distribution function' (LDF) steepness parameter is presented. Preliminary estimate of the mean light nuclei' fraction f30−150 at energies 3 · 10 16 -1.5 · 10 17 eV was performed and yielded f30−150= (21±11) %.

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Section: A Methods For the Primary Spectrum And Composition Reconstrucmentioning

confidence: 99%

Section: A Methods For the Primary Spectrum And Composition Reconstrucmentioning

confidence: 99%

Results on the primary CR spectrum and composition reconstructed with the SPHERE-2 detector

Antonov

Beschapov

Bonvech

et al. 2013

J. Phys.: Conf. Ser.

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“…The detector optical scheme is designed so that each point of the observation plane within certain area (detector's field of view) is observed by at least one sensitive element of the detector. This allows the SPHERE detector to observe the near-axis region of the EAS which presents opportunity for improved precision of CL lateral distribution reconstruction [2,5].…”

Section: Pos(icrc2021)202mentioning

confidence: 99%

“…The main idea of the mass estimation procedure follows previous works, e.g. using the LDF shape [5] via area integrals optimized to certain zenith angles and energies. Another possibility to improve the primary mass resolution is the use of the direct CL angular distribution which is proved to be a powerful instrument for this task [10].…”

Section: A Vaimanmentioning

confidence: 99%

A drone-borne installation for studying the composition of cosmic rays in the range of 1-1000 PeV by registering the reflected Cherenkov light of EAS

Vaiman¹,

Чернов²,

Подгрудков³

et al. 2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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Current technical design of the SPHERE project's new detector is presented. The SPHERE project is aimed at primary cosmic ray studies in the 1-1000 PeV energy range using reflected Cherenkov light. The concept of a drone-mounted detector with a photosensitive camera based on silicon photomultipliers is discussed. The combination of the reflected CL registration method with specific data analysis approaches is a unique feature of this project. The developed earlier event-by-event data analysis approach allows to carry out primary particle mass reconstruction and primary cosmic ray mass composition studies with high accuracy. This is achieved through careful analysis of each EAS Cherenkov light lateral distribution function without building any kind of intermediate distributions of any 'typical' characteristics.

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“…This approach allows to measure the shape of the lateral distribution function (LDF) near the axis (R < 50 m) [6]. This LDF region is believed to be the most informative part of the LDF in terms of composition sensitivity [4,7].…”

Section: Introductionmentioning

confidence: 99%

The SPHERE-2 detector for observation of extensive air showers in 1 PeV -- 1 EeV energy range

Antonov,

Bonvech,

Chernov

et al. 2019

Preprint

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The SPHERE-2 balloon-borne detector designed for extensive air shower (EAS) observations using EAS optical Vavilov-Cherenkov radiation ("Cherenkov light"), reflected from the snow-covered surface of Lake Baikal is described. We briefly discuss the concept behind the reflected Cherenkov light method, characterize the conditions at the experimental site and overview the construction of the tethered balloon used to lift the SPHERE-2 telescope above the surface. This paper is mainly dedicated to a detailed technical description of the detector, including its optical system, sensitive elements, electronics, and data acquisition system (DAQ). The results of some laboratory and field tests of the optical system are presented.

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Method for measuring the PCR proton spectrum in the energy range of > 1016 eV

Cited by 14 publications

References 2 publications

Results on the primary CR spectrum and composition reconstructed with the SPHERE-2 detector

Results on the primary CR spectrum and composition reconstructed with the SPHERE-2 detector

A drone-borne installation for studying the composition of cosmic rays in the range of 1-1000 PeV by registering the reflected Cherenkov light of EAS

The SPHERE-2 detector for observation of extensive air showers in 1 PeV -- 1 EeV energy range

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