Modernization of the Carpet-2 array of the Baksan Neutrino Observatory

Dzhappuev, D. D.; Алексеенко, В. В.; Volchenko, V. I.; Volchenko, G. V.; Guliev, Zh. Sh.; Gulieva, E. V.; Kudzhaev, A. U.; Konovalov, Yu. N.; Lidvansky, A. S.; Михайлова, О. И.; Petkov, V. B.; Smirnov, D. V.; Stepanov, V.; Stenkin, Yu. V.; Khaerdinov, N. S.

doi:10.3103/s1062873807040260

Cited by 28 publications

(6 citation statements)

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“…The Carpet-2 air shower array [24], [25] consists of a surface part (the original Carpet with six external huts) and underground muon detector (MD). The distance between centers of the Carpet and MD is 47 m. The Carpet that detects the EAS electron-photon component includes 400 scintillation detectors forming a square (20x20) with a total area of 196 m 2 .…”

Section: Methodsmentioning

confidence: 99%

Search for diffuse cosmic gamma rays of energy E_γ> 100 TeV with the Carpet-3 air shower array

Dzhappuev

Petkov

Lidvansky

et al. 2017

J. Phys.: Conf. Ser.

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Abstract. An experiment for measuring the flux of gamma rays of cosmic origin with energy above 100 TeV is currently being prepared at the Baksan Neutrino Observatory (the Carpet-3 experiment). The experiment performance will be accomplished after radical modernization of the existing array by substantially increasing areas of both the muon detector and ground level shower array. In this work some results of calculations of efficiency of the experiment for showers from primary gamma rays are presented for different configurations of the array. It is demonstrated that by increasing the muon detector area up to 615 m 2 (the maximum possible value) one can reach with Carpet-3 the world-best sensitivity to 100 TeV gamma rays. The preliminary values of upper limits on the flux of cosmic diffuse gamma rays with energy higher than 1.3 PeV are also presented, derived from experimental data of the Carpet-2 shower array for a net exposure time of 9.2 years. IntroductionSearch for primary gamma rays of energies higher than 100 TeV using the extensive air shower (EAS) method started in 1960s. As opposed to cosmic rays (protons and nuclei of heavier elements) that are charged particles and deflect in interstellar magnetic fields, the primary gamma rays can give information about the spatial distribution and characteristics of places of acceleration of cosmic rays, as well as about the density of cosmic rays in the interstellar space. Investigation of diffuse gamma rays at such energies is carried out by the EAS method in experiments in which one can separate the showers produced by primary photons and nuclei. Such a separation is possible due to the fact that showers from primary photons are essentially less abundant with hadrons (and, as a result, they are muon-poor) in comparison with showers from primary protons and nuclei. Thus, if one selects hadronpoor or muon-poor EAS, there is a hope to effectively distinguish between the showers produced by primary gamma rays and by nuclei. Maze and Zavadski [1] were the first who put forward the idea of searching for high-energy gamma rays by way of detecting muon-poor showers. 18 eV) yielded only upper limits on the fluxes of cosmic gamma rays. In all these experiments only upper limits on the fluxes have been obtained, that appeared to be much lower than the fluxes of diffuse cosmic gamma rays supposedly measured in

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Section: Methodsmentioning

confidence: 99%

Search for diffuse cosmic gamma rays of energy E_γ> 100 TeV with the Carpet-3 air shower array

Dzhappuev

Petkov

Lidvansky

et al. 2017

J. Phys.: Conf. Ser.

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“…Viktor Romanenko gamma-ray showers which are muon-poor. Some results, a description of the facility can be found in [13][14][15].…”

Section: Carpet-2 Observation Of Photons From the Cygnus Cocoonmentioning

confidence: 99%

Carpet-2 observation of E>300 TeV photons accompanying a 150-TeV neutrino from the Cygnus Cocoon

Romanenko¹

2021

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

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“…16.5m The Carpet-2 air shower array [24] of the Baksan Neutrino Observatory is located in the North Caucasus region near Mount Elbrus at an altitude of 1700 m above see level (atmospheric depth 840 g/cm 2 ) ( fig. 1).…”

Section: Experiments Carpet-2mentioning

confidence: 99%

Search for diffuse gamma radiation with energy > 100 TeV at the Carpet-3 experiment

Petkov¹,

Lidvansky²,

Dzhappuev³

et al. 2017

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)

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An experiment for measuring the flux of gamma rays of cosmic origin with energy above 100 TeV (the Carpet-3 experiment) is currently being prepared at the Baksan Neutrino Observatory. The experimental setup suggests substantial increase of the areas of both muon detector and surface air shower array. We present some results of calculations of selection efficiency of air showers from primary gamma rays for different configurations of the array. It is demonstrated that by increasing the muon detector area up to 615 m 2 (the maximum possible value) one can reach with the Carpet-3 the world-best sensitivity to 100 TeV gamma rays. The preliminary values of upper limits on the flux of cosmic diffuse gamma rays with energy higher than 930 TeV are also presented, derived from experimental data of the Carpet-2 shower array for a net exposure time of 9.2 years.

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Modernization of the Carpet-2 array of the Baksan Neutrino Observatory

Cited by 28 publications

References 1 publication

Search for diffuse cosmic gamma rays of energy E_γ> 100 TeV with the Carpet-3 air shower array

Search for diffuse cosmic gamma rays of energy E_γ> 100 TeV with the Carpet-3 air shower array

Carpet-2 observation of E>300 TeV photons accompanying a 150-TeV neutrino from the Cygnus Cocoon

Search for diffuse gamma radiation with energy > 100 TeV at the Carpet-3 experiment

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Modernization of the Carpet-2 array of the Baksan Neutrino Observatory

Cited by 28 publications

References 1 publication

Search for diffuse cosmic gamma rays of energy Eγ> 100 TeV with the Carpet-3 air shower array

Search for diffuse cosmic gamma rays of energy Eγ> 100 TeV with the Carpet-3 air shower array

Carpet-2 observation of E>300 TeV photons accompanying a 150-TeV neutrino from the Cygnus Cocoon

Search for diffuse gamma radiation with energy > 100 TeV at the Carpet-3 experiment

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Product

Resources

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Search for diffuse cosmic gamma rays of energy E_γ> 100 TeV with the Carpet-3 air shower array

Search for diffuse cosmic gamma rays of energy E_γ> 100 TeV with the Carpet-3 air shower array