New measuring system of multipurpose Cherenkov water detector NEVOD

Хохлов, С. С.; Amelchakov, M. B.; Ashikhmin, V. V.; Gulyi, V. G.; Kartsev, Ivan; Киндин, В. В.; Компаниец, К. Г.; Korolev, M.; Петрухин, А. А.; Shulzhenko, I. A.; Шутенко, В. В.; Vorobiev, I. A.; Yashin, I. I.; Zadeba, E. A.

doi:10.5194/astra-7-271-2011

Cited by 30 publications

(15 citation statements)

References 5 publications

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“…The detecting system of the Cherenkov water detector (CWD) NEVOD [8,9] with a volume 2000 m 3 is a spatial lattice of quasi-spherical optical modules (QSMs). Each QSM consists of 6 low-noise 12-dynode photomultipliers FEU-200 with flat 15 cm diameter photocathodes directed along rectangular coordinate axes.…”

Section: Methodsmentioning

confidence: 99%

Study of the energy deposit of muon bundles in the NEVOD detector

Bogdanov

Dushkin

Хохлов

et al. 2015

EPJ Web of Conferences

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Abstract. In several cosmic ray experiments, an excess of multi-muon events in comparison with calculations performed in frame of the widely used hadron interaction models was found. In order to solve this puzzle, investigations of muon energy characteristics in EAS are required. An experiment on the measurement of the energy deposit of muon bundles in water has been started with the NEVOD-DECOR experimental complex. The results of the analysis of the first experimental data are discussed. It has been found that the average specific energy deposit in the Cherenkov calorimeter appreciably increases with zenith angle, thus reflecting the increase of the mean muon energy in the bundles. A possible evidence for an increase of the energy deposit at primary energies above 10 17 eV is observed.

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Section: Methodsmentioning

confidence: 99%

Study of the energy deposit of muon bundles in the NEVOD detector

Bogdanov

Dushkin

Хохлов

et al. 2015

EPJ Web of Conferences

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“…In total, the measuring system contains 91 QSMs (546 PMTs), arranged in vertical strings (3 or 4 QSMs in each) with distances 2.5 m along the main axis of the water tank and 2.0 m across it and over the depth. After a recent modernization [9], the electronic systems of the detector ensure measurements of the signals from each PMT in a wide dynamic range from 1 to 10 5 photoelectrons. The setup also includes a calibration telescope system (CTS); 40 plastic scintillation counters each with area 20 × 40 cm 2 are located on the roof of the water tank, above the QSM lattice, and 40 counters on the tank bottom.…”

Section: Experimental Datamentioning

confidence: 99%

“…An experiment to investigate the energy deposit of inclined muon bundles was started at the experimental complex NEVOD in 2012. The complex includes a Cherenkov water calorimeter [8,9] and a coordinate-tracking detector [10] to ensure a reliable identification of multi-muon events. Detection of muon bundles in a wide range of multiplicities and zenith angles provides a possibility to explore a very wide interval of primary energies in the framework of a single experiment.…”

Section: Introductionmentioning

confidence: 99%

Measurements of the energy deposit of multi-muon events in the Cherenkov water calorimeter

et al. 2017

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Abstract.To solve the problem of the excess of multi-muon events observed in several cosmic ray experiments at ultra-high energies (so-called "muon puzzle"), an analysis of the energy characteristics of the muon component of extensive air showers (EAS) is required. A possible approach to such investigations is the measurement of the energy deposit of muon bundles in the detector, which provides information on the mean muon energy. In the experiment now being conducted at the NEVOD-DECOR complex, the local muon density and EAS arrival direction are determined according to the data of the coordinate-tracking detector DECOR, whereas the energy deposit is measured by means of the Cherenkov water calorimeter NEVOD. Results of the measurements of the energy deposit of inclined muon bundles based on the data accumulated during more than 23,200 h observations in 2012 -2016 are presented and compared with simulations performed by means of the CORSIKA code.

show abstract

“…In total, the measuring system contains 91 QSMs (546 PMTs), arranged in vertical strings (3 or 4 QSMs in each) with distances 2.5 m along the main axis of the water tank and 2.0 m across it and over the depth. After a recent modernization [9], electronic systems of the detector ensure measurements of the signals from each PMT in a wide dynamic range from 1 to 10 5 photoelectrons. The setup includes also calibration telescope system (CTS); 40 plastic scintillation counters with area 20×40 cm 2 are located on the roof of the water tank, above the QSM lattice, and 40 counters on the tank bottom.…”

Section: Experimental Datamentioning

confidence: 99%

“…An experiment on investigations of the energy deposit of inclined muon bundles was started at the Experimental complex NEVOD in 2012. The complex includes the Cherenkov water calorimeter [8,9] and the coordinate-tracking detector [10] which ensures a reliable identification of multi-muon events. Detection of muon bundles in a wide range of multiplicities and zenith angles provides a possibility of exploration of a very wide interval of primary energies in frames of a single experiment.…”

Section: Introductionmentioning

confidence: 99%

Energy deposit of muon bundles detected at various zenith angles in the Cherenkov water calorimeter

Кокоулин¹,

Barbashina²,

Bogdanov³

et al. 2017

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

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In order to solve the problem of the excess of multi-muon events observed in several cosmic ray experiments at ultra-high energies (so-called 'muon puzzle'), investigations of the energy characteristics of the muon component of extensive air showers (EAS) are required. A possible approach to such investigations is the measurement of the energy deposit of muon bundles in the detector, which provides information on the mean muon energy. In the experiment being now conducted at the NEVOD-DECOR complex, the local muon density and EAS arrival direction are determined according to the data of the coordinate-tracking detector DECOR, whereas the energy deposit is measured by means of the Cherenkov water calorimeter NEWOD. Simultaneous detection of muon bundles in a wide range of zenith angles and muon multiplicities ensures exploration of primary particle energy region of 10 16 -10 18 eV and even higher. Results of the measurements of the energy deposit of the inclined muon bundles at various zenith angles based on the data accumulated during more than 29,000 h observations over the period from May 2012 to February 2017 are presented and compared with simulations performed by means of the CORSIKA program.

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New measuring system of multipurpose Cherenkov water detector NEVOD

Abstract: The purposes, tasks and design features of the new measuring system of the Cherenkov water detector NEVOD are discussed

Cited by 30 publications

References 5 publications

Study of the energy deposit of muon bundles in the NEVOD detector

Study of the energy deposit of muon bundles in the NEVOD detector

Measurements of the energy deposit of multi-muon events in the Cherenkov water calorimeter

Energy deposit of muon bundles detected at various zenith angles in the Cherenkov water calorimeter

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