High-energy cosmic-ray physics study by multipurpose astrophysical orbital observatory

Ammosov, V. V.; Britvich, G. I.; Chubenko, A. P.; Drobzhev, V. I.; Kol'tsov, G.I.; Kryakunova, O. N.; Kryukov, S. V.; Merzon, G. I.; Mukhamedshin, R. A.; Murashev, V. N.; Pavlyuchenko, V. P.; Panasyuk, M. I.; Ryabov, V. A.; Ryazhskaya, O. G.; Saito, T.; Shchepetov, A. L.; Соболевский, Н. М.; Soldatov, A. P.; Suymenbaev, B.T.; Vasil’chenko, V.G.; Зацепин, Г. Т.; Zhukov, A.P.

doi:10.1016/j.nuclphysbps.2007.10.033

Cited by 3 publications

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“…Besides the ionization chamber method which is based on the measurement of electromagnetic contents of the secondary electron-photon cascades, the hybrid INCA project presumes the use of neutron detectors for registration of evaporation neutrons born by high-energy interaction of cosmic ray hadrons with heavy absorber nuclei within the calorimeter. As the results of primary investigations [82,83,84] have shown, the informativeness of such a combined calorimeter type is substantially higher in comparison with that of ionization and neutron signal detectors used separately. Indeed, in addition to possibility to define the energy deposit of hadronic CR component inside the calorimeter by two independent methods, the neutron yield from the primary gamma-ray induced cascades is known to be an order of magnitude below that of nuclear ones [74,85,86], which circumstance opens a perspective to select the fully electromagnetic EAS born by the high energy CR gamma-quanta, and, again, occurs to be interesting from astrophysical point of view.…”

Section: The Hybrid Ionization-neutron Calorimetermentioning

confidence: 99%

New complex EAS installation of the Tien Shan mountain cosmic ray station

Chubenko

Shepetov

Antonova

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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In this paper we present a description of the new complex installation for the study of extensive air showers which was created at the Tien Shan mountain cosmic ray station, as well as the results of the test measurements made there in 2014-2016. At present, the system for registration of electromagnetic shower component consists of ∼100 detector points built on the basis of plastic scintillator plates with the sensitive area of 0.25m 2 and 1m 2 , spread equidistantly over ∼10 4 m 2 space. The dynamic range of scintillation amplitude measurements is currently about (3 − 7) · 10 4 , and there is a prospect of it being extended up to ∼10 6 . The direction of shower arrival is defined by signal delays from a number of the scintillators placed cross-wise at the periphery of the detector system. For the investigation of nuclear active shower components there was created a multi-tier 55m 2 ionization-neutron calorimeter with a sum absorber thickness of ∼1000g/cm 2 , typical spatial resolution of the order of 10cm, and dynamic range of ionization measurement channel about ∼10 5 . Also, the use of saturation-free neutron detectors is anticipated for registration of the high-and lowenergy hadron components in the region of shower core. A complex of underground detectors is designed for the study of muonic and penetrative nuclear-active components of the shower.The full stack of data acquisition, detector calibration, and shower parameters restoration procedures are now completed, and the newly obtained shower size spectrum and lateral distribution of shower particles occur in agreement with conventional data. Future studies in the field of 10 14 − 10 17 eV cosmic ray physics to be held at the new shower installation are discussed.

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