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201. Colliding and Fixed Target Mode in a Single Experiment -- A Novel Approach to Study the Matter under New Extreme Conditions

Author

Oleksandr V. Vitiuk, Valery M. Pugatch, Kyrill A. Bugaev, Nazar S. Yakovenko, Pavlo P. Panasiuk, Elizaveta S. Zherebtsova, Vasyl M. Dobishuk, Sergiy B. Chernyshenko, Borys E. Grinyuk, Violetta Sagun, and Oleksii Ivanytskyi

Subjects
Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, triple nuclear (hadron) collisions, fixed target, high net baryonic charge densities, transverse momentum redistribution effect, enhancement of proton and Λ-hyperon production, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Nuclear Theory, FOS: Physical sciences, General Medicine, High Energy Physics - Experiment
Abstract

Here, we propose a novel approach to experimentally and theoretically study the properties of QCD matter under new extreme conditions, namely having an initial temperature over 300 MeV and baryonic charge density over three times the values of the normal nuclear density. According to contemporary theoretical knowledge, such conditions were not accessible during the early Universe evolution and are not accessible now in the known astrophysical phenomena. To achieve these new extreme conditions, we proposed performing high-luminosity experiments at LHC or other colliders by means of scattering the two colliding beams at the nuclei of a solid target that is fixed at their interaction region. Under plausible assumptions, we estimate the reaction rate for the p+C+p and Pb+Pb+Pb reactions and discuss the energy deposition into the target and possible types of fixed targets for such reactions. To simulate the triple nuclear collisions, we employed the well-known UrQMD 3.4 model for the beam center-of-mass collision energies sNN = 2.76 TeV. As a result of our modeling, we found that, in the most central and simultaneous triple nuclear collisions, the initial baryonic charge density is approximately three times higher than the one achieved in the ordinary binary nuclear collisions at this energy.

Published
2022
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202. The precision of the IACT mechanical mounts of the TAIGA observatory

Author

Borodin, A., Grinyuk, A., Pan, A., Sagan, Y., Tkachev, L., Zhurov, D., Astapov, I., Bezyazeekov, P., Brueckner, M., Budnev, N., Chiavassa, A., Dyachok, A., Fedorov, O., Gafarov, A., Garmash, A., Grebenyuk, V., Gress, O., Gress, T., Grishin, O., Horns, D., Ivanova, A., Kalmykov, N., Kazarina, Y., Kindin, V., Kirilenko, P., Kiryushin, S., Kokoulin, R., Kompaniets, K., Korosteleva, E., Kozhin, V., Kravchenko, E., Kunnas, M., Kuzmichev, L., Lemeshev, Y., Lenok, V., Lubsandorzhiev, N., Lubsandorzhiev, B., Mirgazov, R., Mirzoyan, R., Monkhoev, R., Nachtigall, R., Osipova, E., Pakhorukov, A., Panasyuk, M., Pankov, L., Petrukhin, A., Poleschuk, V., Popescu, E., Popova, E., Porelli, A., Postnikov, E., Prosin, V., Ptuskin, V., Pushnin, A., Rjabov, E., Rubtsov, G., Sabirov, B., Samoliga, V., Sidorenkov, A., Silaev, A., Silaev, Junior, Skurikhin, A., Slunechka, V., Sokolov, A., Suvorkin, Y., Sveshnikova, L., Tabolenko, V., Tanaev, A., Tarashansky, B., Tluczykont, M., Wischnewski, R., Yashin, I., Zagorodnikov, A., and TAIGA Collaboration The

Subjects
Physics, ddc:530
Abstract

The TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) observatory is located in the Tunka valley (~50 km west from the southern shore of Lake Baikal) at an altitude of 675m a.s.l. The TAIGA observatory aims to address gamma-ray astronomy at energies from a few TeV to several PeV and CR physics from 100 TeV to several EeV. Its main feature is the complementary, hybrid approach to distinguish CR events from those of gamma rays. Currently TAIGA consists of ~80 wide-angle air Cherenkov detectors (HiSCORE stations), three ~4m diameter IACTs and several hundred surface and underground muon detectors, grouped in three jointly operating arrays. The exceptional feature of the TAIGA IACT array is it’s topology that allows one to aim for the optimal cost/performance by scanning the optimal inter-telescope distances from 300m up to 600m. The IACTs have alt-azimuth type mounts and 576-pixel imaging cameras in the foci, covering 9.6° aperture in the sky. The segmented reflectors of ~10m² area follow the Davis-Cotton design. The largest diameter of the hexagonal shape reflector is 4.3m and the focal length is 4.75m. The rigid telescope mount provides a maximum displacement of EAS image below 2mm (i.e. ≤ 0.024°) in the photodetector plane. The main parameters of IACTs are of a crucial importance for their efficient operation and is presented.

Published
2022

203. Triple high energy nuclear and hadron collisions - a new method to study QCD phase diagram at high baryonic densities

Author

O. V. Vitiuk, V. M. Pugatch, K. A. Bugaev, P. P. Panasiuk, N. S. Yakovenko, B. E. Grinyuk, E. S. Zherebtsova, M. Bleicher, L. V. Bravina, A. V. Taranenko, and E. E. Zabrodin

Subjects
Nuclear and High Energy Physics
Abstract

We propose an entirely new method to study the phase diagram of strongly interacting matter by means of scattering the two colliding beams at the fixed target. Here we present the results of simulations of the most central triple nuclear collisions with the UrQMD 3.4 model for the beam center-of-mass collision energies $$\sqrt{s_{NN}} = 2.76\ \hbox {TeV}$$ s NN = 2.76 TeV and $$\sqrt{s_{NN}} = 200\ \hbox {GeV}$$ s NN = 200 GeV . The main outcome of our modeling is that even at these very high collision energies the initial baryonic charge densities are about 3 times higher than the ones achieved in the ordinary binary nuclear collisions. As a result, for instance, the yields of protons and $$\varLambda $$ Λ -hyperons are strongly enhanced in the triple nuclear collisions. The other prospective applications of this method are briefly discussed. Among them we consider the low energy collisions of three nuclei of lead, passing through an intermediate system with an electric charge of 246 units which exceeds essentially the critical value of 173 and, hence, this may be of crucial importance to study the spontaneous emission of positron-electron pairs from the vacuum. We present the convincing arguments that the triple nuclear collisions method will allow the high energy nuclear physics community to create a new frontier in the studies of the QCD phase diagram and to lift up these studies to an entirely new level.

Published
2022

204. The lowest excited states of 14C and 14O nuclei within a five-cluster model

Author

B.E. Grinyuk, D.V. Piatnytskyi, and V.S. Vasilevsky

Subjects
Nuclear Theory (nucl-th), Nuclear and High Energy Physics, Nuclear Theory, FOS: Physical sciences
Abstract

We study the ground and the first excited $0^{+}$ states of two mirror nuclei $^{14}$C and $^{14}$O within a five-cluster model (three alpha-particles and two extra nucleons) with the use of high accuracy variational approach with Gaussian bases. The first excited $0^{+}$ state of these nuclei is shown to be connected with a change of the structure of the two-nucleon subsystem moving in the field of the $^{12}$C cluster. The density distributions, electric form factors (both the elastic and transition ones), pair correlation functions, and the momentum distributions of the constituent particles are found. The most probable shapes of five-cluster systems are revealed., Comment: 25 pages, 8 figures

Published
2022
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205. Structure peculiarities of three- and four-cluster nuclei 6He, 6Li, and 10Be, 10C

Author

B. E. Grinyuk and I. V. Simenog

Subjects
6He, 6Li, 10Be, 10С, charge density distribution, form factor, coefficient of clusterization., Atomic physics. Constitution and properties of matter, QC170-197
Abstract

Within a three-particle model (α + N + N), structure peculiarities of 6He and 6Li halo nuclei are studied. Within a four-particle model (α + α + N + N), the structure of 10Be and 10С nuclei is analized and compared with that of 6He and 6Li. The charge density distributions and form factors of these nuclei are calculated and explained. The density distributions of extra nucleons in 10Be and 10С are studied and compared with the calculated distributions of halo nucleons in 6He and 6Li. A detailed study of the asymptotics of the density distributions is carried out for the threeparticle 6He and 6Li nuclei. Asymptotic behavior of the amplitudes of clusterization is analyzed, and the coefficients of clusterization are calculated for the deuteron cluster in 6Li and the dineutron cluster in 6He. The variational method with optimized Gaussian bases is used in calculations.

Published
2011

206. Depth of the Maximum of Extensive Air Showers (EASes) and the Mean Mass Composition of Primary Cosmic Rays in the 1015–1018 eV Range of Energies, According to Data from the TUNKA-133 and TAIGA-HiSCORE Arrays for Detecting EAS Cherenkov Light in the Tunkinsk Valley

Author

V. V. Prosin, I. I. Astapov, P. A. Bezyazeekov, A. N. Borodin, M. Brückner, N. M. Budnev, A. Bulan, A. Vaidyanathan, R. Wischnewski, P. Volchugov, D. Voronin, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, A. N. Dyachok, D. P. Zhurov, A. V. Zagorodnikov, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, V. A. Kozhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. Chiavassa, M. Lavrova, A. A. Lagutin, Yu. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. Pan, M. I. Panasyuk, L. V. Pankov, A. L. Pakhorukov, A. A. Petrukhin, V. A. Poleschuk, M. Popesku, E. G. Popova, A. Porelli, E. B. Postnikov, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, G. I. Rubtsov, E. V. Ryabov, Ya. I. Sagan, V. S. Samoliga, L. G. Sveshnikova, A. Yu. Sidorenkov, A. A. Silaev, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Y. Suvorkin, V. A. Tabolenko, A. Tanaev, B. A. Tarashansky, M. Ternovoy, L. G. Tkachev, M. Tluczykont, N. Ushakov, D. Horns, and I. I. Yashin

Subjects
010302 applied physics, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 01 natural sciences
Published
2021
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207. Three-particle structure of the halo nucleus 6Li

Author

B. E. Grinyuk and I. V. Simenog

Subjects
Atomic physics. Constitution and properties of matter, QC170-197
Abstract

The three-particle model for 6Li nucleus (α-cluster, and two halo nucleons p and n) is used to study the structure properties of this system within the variational method with Gaussian basis. The ground triplet (Jπ = 1+) and the excited singlet (Jπ = 0+) states of 6Li are studied. For this purpose, potentials of the np- and Nα-interaction are proposed to give description of the elastic S-phases at low energies simultaneously with correct values of the binding energy and the charge radius of 6Li nucleus. The density distributions, elastic form factors, pair correlation functions, clusterization coefficients, and momentum distributions of 6Li nucleus are studied.

Published
2009
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212. About Conditions of Spatial Collapse in an Infinite System of Bose Particles

Author

Grinyuk, B.E. and Bugaev, K.A.

Subjects
Condensed Matter::Quantum Gases, Condensed Matter::Other, spatial collapse, просторовий колапс, Bose-system, бозе-система
Abstract

Using the variational principle, we show that the condition of spatial collapse in a Bose gas is not determined by the value of the scattering length of the interaction potential between particles contrary to the result following from the Gross–Pitaevskii equation, where the collapse should take place at a negative scattering length., На основi варiацiйного принципу показано, що умова просторового колапсу в бозе-газi не визначається величиною довжини розсiяння для потенцiалу взаємодiї мiж частинками, на вiдмiну вiд результату, який випливає з рiвняння Ґроса–Пiтаєвського i означає наявнiсть колапсу у випадку вiд’ємної довжини розсiяння.

Published
2021
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213. Gamma/Hadron Separation for a Ground Based IACT in Experiment TAIGA Using Machine Learning Methods

Author

Maria Vasyutina, L. Sveshnikova, I. I. Astapov, P. A. Bezyazeekov, M. Blank, E. A. Bonvech, A. N. Borodin, M. Brueckner, N. M. Budnev, A. V. Bulan, D. V. Chernov, A. Chiavassa, A. N. Dyachok, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, O. A. Gress, T. I. Gress, A. A. Grinyuk, O. G. Grishin, Dieter Horns, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. A. Lagutin, M. V. Lavrova, Yu. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, A. D. Lukanov, D. Lukyantsev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, L. A. Panasenko, A. Pan, L. V. Pankov, A. D. Panov, A. A. Petrukhin, D. A. Podgrudkov, V. A. Poleschuk, M. Popesku, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin 𝑗, A. Razumov, E. Rjabov, G. I. Rubtsov, Y. I. Sagan, V. S. Samoliga, Andrei Sidorenkov, A. A. Silaev, A. A. Silaev jr, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Y. Suvorkin, V. A. Tabolenko, A. B. Tanaev, B. A. Tarashansky, M. Ternovoy, L. G. Tkachev, M. Tluczykont, N. Ushakov, A. Vaidyanathan, P. A. Volchugov, N. V. Volkov, D. Voronin, R. Wischnewski, I. I. Yashin, A. V. Zagorodnikov, and D. P. Zhurov

Subjects
Computer science, Hadron, Taiga, Separation (aeronautics), IACT, Random forest, Remote sensing
Published
2021
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220. TAIGA-IACT pointing control and monitoring software status

Author

Dmitriy Zhurov, O. A. Gress, D. S. Lukyantsev, I. I. Astapov, A. K. Awad, P. A. Bezyazeekov, M. Blank, E. A. Bonvech, A. N. Borodin, A. V. Bulan, M. Brueckner, N. M. Budnev, A. Chiavassa, D. V. Chernov, A. N. Dyachok, A. R. Gafarov, A. Yu. Garmash, V. M. Grebenyuk, E. Gress, T. I. Gress, O. G. Grishin, A. A. Grinyuk, Dieter Horns, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. A. Lagutin, M. Lavrova, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, A. D. Lukanov, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, A. Pan, L. V. Pankov, A. D. Panov, A. A. Petrukhin, D. A. Podgrudkov, V. A. Poleschuk, M. Popesku, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, A. Y. Razumov, G. I. Rubtsov, E. V. Ryabov, Y. I. Sagan, V. S. Samoliga, A. A. Silaev, A. A. junior Silaev, Andrei Sidorenkov, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, L. G. Sveshnikova, V. A. Tabolenko, B. A. Tarashansky, L. G. Tkachev, R. Togoo, M. Tluczykont, N. Ushakov, A. Vaidyanathan, P. A. Volchugov, N. V. Volkov, D. Voronin, R. Wischnewski, A. V. Zagorodnikov, and I. I. Yashin

Published
2021
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221. Search for nanosecond-fast optical transients with TAIGA-HiSCORE array

Author

Alexander Panov, I. Astapov, A. Awad, G. M. Beskin, Pavel Bezyazeekov, M. Blank, E. A. Bonvech, A. Borodin, M. Brückner, N. M. Budnev, A. Bulan, D. V. Chernov, A. Chiavassa, A. N. Dyachok, A. R. Gafarov, A. Garmash, V. Grebenyuk, O. Gress, T. I. Gress, A. Grinyuk, O. Grishin, Dieter Horns, A. Ivanova, N. Kalmykov, V. Kindin, S. Kiryuhin, R. Kokoulin, K. Kompaniets, E. Korosteleva, V. A. Kozhin, E. Kravchenko, A. A. Krivopalova, L. Kuzmichev, Alexander Kryukov, A. Lagutin, M. Lavrova, Yu. Lemeshev, B. Lubsandorzhiev, N. Lubsandorzhiev, A. Lukanov, D. Lukyantsev, R. R. Mirgazov, R. Mirzoyan, R. Monkhoev, E. Osipova, A. Pakhorukov, L. A. Panasenko, A. Pan, L. Pankov, A. Petrukhin, D. A. Podgrudkov, V. Poleschuk, M. Popesku, E. Popova, A. Porelli, E. Postnikov, V. Prosin, V. Ptuskin, A. Pushnin, R. Raikin, A. Razumov, E. Rjabov, G. Rubtsov, Y. Sagan, V. Samoliga, Andrei Sidorenkov, A. Silaev, A. A. Silaev (junior), A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Y. Suvorkin, L. G. Sveshikova, V. A. Tabolenko, A. Tanaev, B. Tarashansky, M. Ternovoy, L. Tkachev, M. Tluczykont, N. Ushakov, A. Vaidyanathan, P. Volchugov, N. Volkov, D. Voronin, R. Wischnewski, I. Yashin, A. Zagorodnikov, and D. Zhurov

Published
2021
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222. TAIGA - an advanced hybrid detector complex for astroparticle physics, cosmic ray physics and gamma-ray astronomy

Author

V. P. Sulakov, E. A. Kravchenko, Roman Raikin, A. A. Grinyuk, A. Chiavassa, E. E. Korosteleva, BayarJon Paul Lubsandorzhiev, E. Popova, R. R. Mirgazov, L. G. Sveshnikova, S. Malakhov, R. P. Kokoulin, R. Togoo, A. Petrukhin, Yu. Lemeshev, A.V. Igoshin, S. Kiryuhin, V. V. Prosin, A. Porelli, A. Borodin, M. Blank, A. Ivanova, M. Tluczykont, A. N. Dyachok, V.A. Tabolenko, L. G. Tkachev, V. Samoliga, V. A. Poleschuk, R. Wischnewski, A. Bulan, E. A. Osipova, N. Ushakov, Pavel Bezyazeekov, Evgeny Postnikov, D. Zhurov, L. V. Pankov, A. Garmash, M. Ternovoy, D. Voronin, O. A. Gress, T. I. Gress, V. V. Kindin, I. I. Astapov, V. A. Kozhin, K. G. Kompaniets, Andrey Sokolov, E. V. Ryabov, R. Mirzoyan, Grigory Rubtsov, N. N. Kalmykov, O. Grishin, M. Popesku, D. Lukyantsev, V. Slunecka, A. V. Skurikhin, Y. Sagan, Dieter Horns, V. S. Ptuskin, P. Volchugov, A. L. Pakhorukov, A. Tanaev, A. Pushnin, N. B. Lubsandorzhiev, Aleksandr Gafarov, A. A. Silaev, A. V. Zagorodnikov, N. M. Budnev, Y. Suvorkin, E. Gress, A. Zhaglova, L. A. Kuzmichev, V. M. Grebenyuk, B. A. Tarashchansky, A. Vaidyanathan, I. Poddubnyi, Anatoly Lagutin, V. Ponomareva, M. Brückner, R. D. Monkhoev, B. M. Sabirov, I. I. Yashin, Alexander Kryukov, and A. Sidorenkov

Subjects
Astroparticle physics, Physics, Observatory, Astrophysics::High Energy Astrophysical Phenomena, Taiga, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Electron, Gamma-ray astronomy, Cherenkov radiation
Abstract

The physical motivations and performance of the TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) project are presented. The TAIGA observatory addresses ground-based gamma-ray astronomy at energies from a few TeV to several PeV, as well as cosmic ray physics from 100 TeV to several EeV and astroparticle physics. The pilot TAIGA complex locates in the Tunka valley, ~50 km West from the southern tip of the lake Baikal. It includes integrating air Cherenkov TAIGA-HiSCORE array with 120 wide-angle optical stations distributed over on area 1 square kilometer about and three the 4-m class Imaging Atmospheric Cherenkov Telescopes of the TAIGA-IACT array. The latter array has a shape of triangle with side lengths of about 300m, 400m and 500m. The expected integral sensitivity of the 1 km2 TAIGA detector will be about 2,5 × 10-13 TeV cm-2 sec-1 for detection of E ≥ 100 TeV gamma-rays in 300 hours of source observations. The combination of the wide angle Cherenkov array and IACTs could offer a cost effective-way to build a really large (up to 10 km2) array for very high energy gamma-ray astronomy. The reconstruction of a given EAS energy, incoming direction and the core position, based on the TAIGA-HiSCORE data, allows one to increase the distance between the relatively expensive IACTs up to 600-800 m. These, together with the surface and underground electron/Muon detectors will be used for selection of gamma-ray induced EAS. Present status of the project, together with the current array description and the first experimental results and plans for the future will be reported.

Published
2021
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223. The precision of the IACT mechanical mounts of the TAIGA observatory

Author

L. G. Tkachev, Andrey Grinyuk, Anatoliy Pan, Dmitriy Zhurov, A. Borodin, and Yaroslav Sagan

Subjects
Physics::Instrumentation and Detectors, Aperture, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, IACT, Observatory, Sky, Focal length, Telescope mount, Cherenkov radiation, Geology, Remote sensing, media_common
Abstract

The TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) observatory is located in the Tunka valley (~50 km west from the southern shore of Lake Baikal) at an altitude of 675m a.s.l. The TAIGA observatory aims to address gamma-ray astronomy at energies from a few TeV to several PeV and CR physics from 100 TeV to several EeV. Its main feature is the complementary, hybrid approach to distinguish CR events from those of gamma rays. Currently TAIGA consists of ~80 wide-angle air Cherenkov detectors (HiSCORE stations), three ~4m diameter IACTs and several hundred surface and underground muon detectors, grouped in three jointly operating arrays. The exceptional feature of the TAIGA IACT array is it’s topology that allows one to aim for the optimal cost/performance by scanning the optimal inter-telescope distances from 300m up to 600m. The IACTs have alt-azimuth type mounts and 576-pixel imaging cameras in the foci, covering 9.6° aperture in the sky. The segmented reflectors of ~10m² area follow the Davis-Cotton design. The largest diameter of the hexagonal shape reflector is 4.3m and the focal length is 4.75m. The rigid telescope mount provides a maximum displacement of EAS image below 2mm (i.e. ≤ 0.024°) in the photodetector plane. The main parameters of IACTs are of a crucial importance for their efficient operation and is presented.

Published
2021
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224. Stereoscopic and monoscopic operation of the five IACTs in the TAIGA experiment

Author

Pavel Volchugov, A. Grinyuk, E. Postnikov, I. Astapov, A. Awad, Pavel Bezyazeekov, M. Blank, A. Borodin, A. Bulan, M. Brueckner, N. M. Budnev, A. Chiavassa, A. N. Dyachok, A. R. Gafarov, A. Garmash, V. Grebenyuk, O. Gress, T. I. Gress, O. Grishin, Dieter Horns, N. Kalmykov, V. Kindin, S. Kiryuhin, R. Kokoulin, K. Kompaniets, E. Korosteleva, V. A. Kozhin, E. Kravchenko, Alexander Kryukov, L. Kuzmichev, A. Lagutin, M. Lavrova, B. Lubsandorzhiev, N. Lubsandorzhiev, A. Lukanov, D. Lukyantsev, R. R. Mirgazov, R. Mirzoyan, R. Monkhoev, E. Osipova, A. Pakhorukov, A. Pan, M. I. Panasyuk, L. Pankov, A. Petrukhin, V. Poleschuk, M. Popesku, E. Popova, A. Porelli, V. Prosin, V. Ptuskin, A. Pushnin, R. Raikin, A. Razumov, G. Rubtsov, E. V. Ryabov, Y. Sagan, V. Samoliga, Yu. Semeney, A. Silaev, A. Silaev(junior), Andrei Sidorenkov, A. V. Skurikhin, M. Slunecka, A. Sokolov, C. Spiering, L. Sveshnikova, V. A. Tabolenko, B. Tarashansky, L. Tkachev, R. Togoo, M. Tluczykont, N. Ushakov, A. Vaidyanathan, N. Volkov, D. Voronin, R. Wischnewski, A. Zagorodnikov, D. Zhurov, and I. Yashin

Published
2021
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225. Tunka-Grande array for high-energy gamma-ray astronomy and cosmic-ray physics: preliminary results

Author

A. Ivanova, M. Brueckner, V. Ptuskino, R. Monkhoev, I. Astapov, Pavel Bezyazeekov, M. Blank, E. A. Bonvech, A. Borodin, M. Brückner, N. M. Budnev, A. Bulan, D. V. Chernov, A. Chiavassa, A. N. Dyachok, A. R. Gafarov, A. Garmash, V. Grebenyuk, E. Gress, O. Gress, T. I. Gress, A. Grinyuk, O. Grishin, Dieter Horns, A. Igoshin, A. D. Ivanova, N. Kalmykov, V. Kindin, S. Kiryuhin, R. Kokoulin, K. Kompaniets, E. Korosteleva, V. A. Kozhin, E. Kravchenko, Alexander Kryukov, L. Kuzmichev, A. Lagutin, M. Lavrova, Y. Lemeshev, B. Lubsandorzhiev, N. Lubsandorzhiev, A. Lukanov, D. Lukyantsev, S. Malakhov, R. R. Mirgazov, R. Mirzoyan, E. Osipova, A. Pakhorukov, L. A. Panasenko, L. Pankov, A. Panov, A. Petrukhin, I. Poddubnyi, D. A. Podgrudkov, V. Poleschuk, V. Ponomareva, M. Popesku, E. Popova, A. Porelli, E. Postnikov, V. Prosin, V. Ptuskin, A. Pushnin, R. Raikin, G. Rubtsov, E. V. Ryabov, Y. Sagan, V. Samoliga, B. Sabirov, A. Silaev, A. Silaev (junior), Andrei Sidorenkov, A. V. Skurikhin, V. Slunecka, A. Sokolov, V. Sulakov, Y. Suvorkin, L. Sveshnikova, V. A. Tabolenko, B. Tarashchansky, L. Tkachev, M. Tluczykont, A. Tanaev, M. Ternovoy, R. Togoo, N. Ushakov, A. Vaidyanathan, P. Volchugov, N. Volkov, D. Voronin, R. Wischnewski, A. Zagorodnikov, A. Zhaglova, D. Zhurov, and I. Yashin

Published
2021
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227. Induced surface and curvature tension equation of state for hadron resonance gas in finite volumes and its relation to morphological thermodynamics

Author

Bugaev, K. A., primary, Vitiuk, O. V., additional, Grinyuk, B. E., additional, Panasiuk, P. P., additional, Yakovenko, N. S., additional, Zherebtsova, E. S., additional, Sagun, V. V., additional, Ivanytskyi, O. I., additional, Bravina, L. V., additional, Blaschke, D. B., additional, Kabana, S., additional, Kuleshov, S. V., additional, Taranenko, A. V., additional, Zabrodin, E. E., additional, and Zinovjev, G. M., additional

Published
2021
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229. Gamma/Hadron Separation for a Ground Based IACT in Experiment TAIGA Using Machine Learning Methods

Author

Vasyutina, Maria, primary, Sveshnikova, L., additional, Astapov, I. I., additional, Bezyazeekov, P. A., additional, Blank, M., additional, Bonvech, E. A., additional, Borodin, A. N., additional, Brueckner, M., additional, Budnev, N. M., additional, Bulan, A. V., additional, Chernov, D. V., additional, Chiavassa, A., additional, Dyachok, A. N., additional, Gafarov, A. R., additional, Garmash, A. Yu., additional, Grebenyuk, V. M., additional, Gress, O. A., additional, Gress, T. I., additional, Grinyuk, A. A., additional, Grishin, O. G., additional, Horns, Dieter, additional, Ivanova, A. L., additional, Kalmykov, N. N., additional, Kindin, V. V., additional, Kiryuhin, S. N., additional, Kokoulin, R. P., additional, Kompaniets, K. G., additional, Korosteleva, E. E., additional, Kozhin, V. A., additional, Kravchenko, E. A., additional, Kryukov, A. P., additional, Kuzmichev, L. A., additional, Lagutin, A. A., additional, Lavrova, M. V., additional, Lemeshev, Yu., additional, Lubsandorzhiev, B. K., additional, Lubsandorzhiev, N. B., additional, Lukanov, A. D., additional, Lukyantsev, D., additional, Mirgazov, R. R., additional, Mirzoyan, R., additional, Monkhoev, R. D., additional, Osipova, E. A., additional, Pakhorukov, A. L., additional, Panasenko, L. A., additional, Pan, A., additional, Pankov, L. V., additional, Panov, A. D., additional, Petrukhin, A. A., additional, Podgrudkov, D. A., additional, Poleschuk, V. A., additional, Popesku, M., additional, Popova, E. G., additional, Porelli, A., additional, Postnikov, E. B., additional, Prosin, V. V., additional, Ptuskin, V. S., additional, Pushnin, A. A., additional, 𝑗, R. I. Raikin, additional, Razumov, A., additional, Rjabov, E., additional, Rubtsov, G. I., additional, Sagan, Y. I., additional, Samoliga, V. S., additional, Sidorenkov, Andrei Yu., additional, Silaev, A. A., additional, Silaev jr, A. A., additional, Skurikhin, A. V., additional, Slunecka, M., additional, Sokolov, A. V., additional, Suvorkin, Y., additional, Tabolenko, V. A., additional, Tanaev, A. B., additional, Tarashansky, B. A., additional, Ternovoy, M., additional, Tkachev, L. G., additional, Tluczykont, M., additional, Ushakov, N., additional, Vaidyanathan, A., additional, Volchugov, P. A., additional, Volkov, N. V., additional, Voronin, D., additional, Wischnewski, R., additional, Yashin, I. I., additional, Zagorodnikov, A. V., additional, and Zhurov, D. P., additional

Published
2021
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230. Tunka-Grande scintillation array: resent results

Author

Ivanova, A L, primary, Monkhoev, R, additional, Astapov, I, additional, Bezyazeekov, P, additional, Blank, M, additional, Bonvech, E, additional, Borodin, A, additional, Brückner, M, additional, Budnev, N, additional, Bulan, A, additional, Chernov, D, additional, Chiavassa, A, additional, Dyachok, A, additional, Gafarov, A, additional, Garmash, A, additional, Grebenyuk, V, additional, Gress, E, additional, Gress, O, additional, Gress, T, additional, Grinyuk, A, additional, Grishin, O, additional, Horns, D, additional, Ivanova, A D, additional, Kalmykov, N, additional, Kindin, V, additional, Kiryuhin, S, additional, Kokoulin, R, additional, Kompaniets, K, additional, Korosteleva, E, additional, Kozhin, V, additional, Kravchenko, E, additional, Kryukov, A, additional, Kuzmichev, L, additional, Lagutin, A, additional, Lavrova, M, additional, Lemeshev, Y, additional, Lubsandorzhiev, B, additional, Lubsandorzhiev, N, additional, Lukanov, A, additional, Lukyantsev, D, additional, Malakhov, S, additional, Mirgazov, R, additional, Mirzoyan, R, additional, Osipova, E, additional, Pakhorukov, A, additional, Pankov, L, additional, Pan, A, additional, Panov, A, additional, Petrukhin, A, additional, Poddubnyi, I, additional, Podgrudkov, D, additional, Poleschuk, V, additional, Ponomareva, V, additional, Popova, E, additional, Porelli, A, additional, Postnikov, E, additional, Prosin, V, additional, Ptuskin, V, additional, Pushnin, A, additional, Raikin, R, additional, Razumov, A, additional, Rubtsov, G, additional, Ryabov, E, additional, Sagan, Y, additional, Samoliga, V, additional, Satyshev, A, additional, Silaev, A, additional, Sidorenkov, A, additional, Sinegovsky, S, additional, Skurikhin, A, additional, Sokolov, A, additional, Sulakov, V, additional, Sveshnikova, L, additional, Tabolenko, V, additional, Tarashchansky, B, additional, Tkachev, L, additional, Tluczykont, M, additional, Tanaev, A, additional, Ternovoy, M, additional, Togoo, R, additional, Ushakov, N, additional, Vaidyanathan, A, additional, Volchugov, P, additional, Volkov, N, additional, Voronin, D, additional, Wischnewski, R, additional, Zagorodnikov, A, additional, Zhaglova, A, additional, Zhurov, D, additional, and Yashin, I, additional

Published
2021
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232. Geant4 simulation of the Tunka-Grande experiment

Author

Monkhoev, R, primary, Ternovoy, M, additional, Astapov, I, additional, Bezyazeekov, P, additional, Borodin, A, additional, Brueckner, M, additional, Budnev, N, additional, Chiavassa, A, additional, Dyachok, A, additional, Gafarov, A, additional, Garmash, A, additional, Grebenyuk, V, additional, Gress, O, additional, Gress, T, additional, Grinyuk, A, additional, Grishin, O, additional, Horns, D, additional, Igoshin, A, additional, Ivanova, A, additional, Ivanova, Al, additional, Kalmykov, N, additional, Kindin, V, additional, Kiryuhin, S, additional, Kokoulin, R, additional, Kompaniets, K, additional, Korosteleva, E, additional, Kozhin, V, additional, Kravchenko, E, additional, Kryukov, A, additional, Kuzmichev, L, additional, Lagutin, A, additional, Lemeshev, Y, additional, Lubsandorzhiev, B, additional, Lubsandorzhiev, N, additional, Lukyantsev, D, additional, Malakhov, S, additional, Mirgazov, R, additional, Mirzoyan, R, additional, Osipova, E, additional, Pakhorukov, A, additional, Pankov, L, additional, Petrukhin, A, additional, Poddubnyi, I, additional, Poleschuk, V, additional, Ponomareva, V, additional, Popesku, M, additional, Popova, E, additional, Porelli, A, additional, Postnikov, E, additional, Prosin, V, additional, Ptuskin, V, additional, Pushnin, A, additional, Raikin, R, additional, Rubtsov, G, additional, Ryabov, E, additional, Sagan, Y, additional, Samoliga, V, additional, Sabirov, B, additional, Silaev, A, additional, Sidorenkov, A, additional, Sinegovsky, S, additional, Skurikhin, A, additional, Slunecka, V, additional, Sokolov, A, additional, Suvorkin, Y, additional, Sveshnikova, L, additional, Tabolenko, V, additional, Tarashchansky, B, additional, Tkachev, L, additional, Tluczykont, M, additional, Tanaev, A, additional, Togoo, R, additional, Ushakov, N, additional, Vaidyanathan, A, additional, Volchugov, P, additional, Voronin, D, additional, Wischnewski, R, additional, Zagorodnikov, A, additional, Zhaglova, A, additional, Zhurov, D, additional, and Yashin, I, additional

Published
2021
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233. Search for Astrophysical Nanosecond Optical Transients with TAIGA-HiSCORE Array

Author

Panov, A. D., primary, Astapov, I. I., additional, Beskin, G. M., additional, Bezyazeekov, P. A., additional, Blank, M., additional, Bonvech, E. A., additional, Borodin, A. N., additional, Brückner, M., additional, Budnev, N. M., additional, Bulan, A. V., additional, Chernov, D. V., additional, Chiavassa, A., additional, Dyachok, A. N., additional, Gafarov, A. R., additional, Garmash, A. Yu., additional, Grebenyuk, V. M., additional, Gress, O. A., additional, Gress, T. I., additional, Grinyuk, A. A., additional, Grishin, O. G., additional, Horns, D., additional, Ivanova, A. L., additional, Kalmykov, N. N., additional, Kindin, V. V., additional, Kiryuhin, S. N., additional, Kokoulin, R. P., additional, Kompaniets, K. G., additional, Korosteleva, E. E., additional, Kozhin, V. A., additional, Kravchenko, E. A., additional, Krivopalova, A. A., additional, Kuzmichev, L. A., additional, Kryukov, A. P., additional, Lagutin, A. A., additional, Lavrova, M. V., additional, Lemeshev, Yu., additional, Lubsandorzhiev, B. K., additional, Lubsandorzhiev, N. B., additional, Lukanov, A. D., additional, Mirgazov, R. R., additional, Mirzoyan, R., additional, Monkhoev, R. D., additional, Osipova, E. A., additional, Pakhorukov, A. L., additional, Pan, A., additional, Pankov, L. V., additional, Petrukhin, A. A., additional, Podgrudkov, D. A., additional, Poleschuk, V. A., additional, Popova, E. G., additional, Porelli, A., additional, Postnikov, E. B., additional, Prosin, V. V., additional, Ptuskin, V. S., additional, Pushnin, A. A., additional, Raikin, R. I., additional, Razumov, A., additional, Rjabov, E., additional, Rubtsov, G. I., additional, Sagan, Y. I., additional, Samoliga, V. S., additional, Sidorenkov, A. Yu., additional, Silaev, A. A., additional, Silaev,, A. A., additional, Skurikhin, A. V., additional, Slunecka, M., additional, Sokolov, A. V., additional, Suvorkin, Y., additional, Sveshnikova, L. G., additional, Tabolenko, V. A., additional, Tanaev, A. B., additional, Tarashansky, B. A., additional, Ternovoy, M., additional, Tkachev, L. G., additional, Tluczykont, M., additional, Ushakov, N., additional, Vaidyanathan, A., additional, Volchugov, P. A., additional, Volkov, N. V., additional, Voronin, D., additional, Wischnewski, R., additional, Yashin, I. I., additional, Zagorodnikov, A. V., additional, and Zhurov, D. P., additional

Published
2021
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235. THE CATHODIC PROTECTION SYSTEM OF PIPELINES WITH ANODIC EARTHING

Author

O. V. Aleksashina, L. N. Parshina, O. N. Grinyuk, and K. V. Larikov

Subjects
Pipeline transport, Materials science, Ground, Metallurgy, Cathodic protection, Anode
Abstract

In the article the method of calculation of anode grounding at electrochemical protection of pipelines for ensuring their reliable and safe operation, and also prevention of their destruction because of corrosion is considered.

Published
2020
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236. The TUS Space Photodetector Relative Calibration in Flight

Author

L. G. Tkachev, A. A. Grinyuk, M. V. Lavrova, and A. V. Tkachenko

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Musical tuning, Photodetector, Radiation, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, Atmosphere, Telescope, Optics, law, 0103 physical sciences, Calibration, Satellite, Ultra-high-energy cosmic ray, 010306 general physics, business
Abstract

The TUS experiment is aimed to study the energy spectrum and arrival direction of Ultra High Energy Cosmic Rays at E ∼ 100 EeV from the space orbit by measuring the fluorescence radiation of the Extensive Atmospheric Shower in the atmosphere. It is the first orbital telescope aimed for such measurements and is taking data since April 28, 2016. During the first turns of operation ∼20% PMTs were broken due to the HV tuning system failure. For the same reason, the properties of the remaining PMTs are changed. Relative calibration of PMT gains in flight was done and presented based on analyzing TUS background data itself. A reconstruction of EAS arrival directions is done using the relative calibration coefficients.

Published
2019
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238. Energy Spectrum of Primary Cosmic Rays, According to TUNKA-133 and TAIGA-HiSCORE EAS Cherenkov Light Data

Author

Evgeny Postnikov, Yu. Lemeshev, Mihai Popescu, Roman Raikin, M. Slunecka, Bayarto Lubsandorzhiev, O. G. Grishin, S. Kiryuhin, K. G. Kompaniets, A. A. Grinyuk, E. A. Osipova, L. A. Kuzmichev, V. M. Grebenyuk, Pavel Bezyazeekov, V. Boreyko, A. V. Tkachenko, Dmitry Zhurov, L. V. Pankov, Andrey Sokolov, N. V. Gorbunov, A. Chiavassa, V. Prosin, L. G. Sveshnikova, M. Kunnas, Anatoly Lagutin, A. Pakhorukov, L. G. Tkachev, N. M. Budnev, A. Yu. Sidorenkov, A. A. Petrukhin, V. Samoliga, Aleksey Zagorodnikov, R. Wischnewski, R. R. Mirgazov, V. A. Poleschuk, A. Pushnin, E.G. Popova, Oleg Fedorov, Valery Zurbanov, Aleksandr Gafarov, B. M. Sabirov, A. V. Skurikhin, A. A. Silaev, A. Borodin, V.A. Tabolenko, P. Kirilenko, Evgenii V Rjabov, I. I. Yashin, Y. Kazarina, A. Yu. Garmash, I. I. Astapov, R. D. Monkhoev, T. I. Gress, Dieter Horns, A. N. Dyachok, M. Tluczykont, Grigory Rubtsov, N. N. Kalmykov, N. B. Lubsandorzhiev, C. Spiering, M. Brueckner, V. S. Ptuskin, A. Ivanova, Yu. A. Semeney, O. A. Gress, V. A. Kozhin, V. V. Kindin, Y. Sagan, V. V. Lenok, A. Porelli, E. A. Kravchenko, E. E. Korosteleva, R. P. Kokoulin, B.A. Tarashansky, Mikhail Panasyuk, and R. Mirzoyan

Subjects
010302 applied physics, Physics, Range (particle radiation), 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, Flux, Cosmic ray, 01 natural sciences, Spectral line, Nuclear physics, Primary (astronomy), 0103 physical sciences, Energy spectrum, Cherenkov radiation
Abstract

The Tunka-133 Cherenkov complex for recording extensive air showers (EAS) collected data over seven winters from 2009 to 2017. The differential energy spectra of all particles was acquired in the 6 × 1015–3 × 1018 eV range of energies over 2175 h. The TAIGA-HiSCORE complex is continually being expanded and upgraded. Data acquired by 30 first-line stations over 35 days during the period 2017–2018 is analyzed in this work. As at the Tunka-133 setup, the primary particle energies above 1015 eV are measured using the density of the Cherenkov light flux at a distance of 200 m from a shower’s axis. Data on lower energies are collected by determining the energy of the light flux near a shower’s axis. This results in a spectrum of 2 × 1014–1017 eV. The combined spectrum for the two systems covers a range of 2 × 1014–2 × 1018 eV.

Published
2019
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239. First Season of Operation of the TAIGA Hybrid Cherenkov Array

Author

M. Brueckner, A. Pakhorukov, E. A. Osipova, N. B. Lubsandorzhiev, L. G. Tkachev, Yu. Lemeshev, A. Ivanova, Y. Sagan, A. Yu. Garmash, Pavel Bezyazeekov, V. Boreyko, V. A. Poleschuk, S. Kiryuhin, A. Pushnin, A. V. Skurikhin, M. Kunnas, L. A. Kuzmichev, C. Spiering, V. M. Grebenyuk, Evgeny Postnikov, M. Tluczykont, N. V. Gorbunov, Grigory Rubtsov, N. N. Kalmykov, K. G. Kompaniets, Anatoly Lagutin, E. A. Kravchenko, Mikhail Panasyuk, Dieter Horns, O. A. Gress, A. A. Petrukhin, E. E. Korosteleva, A. V. Tkachenko, V. A. Kozhin, Yulia Kazarina, A. Yu. Sidorenkov, V. V. Kindin, Aleksey Zagorodnikov, R. P. Kokoulin, A. Chiavassa, V. Prosin, V. Samoliga, B.A. Tarashansky, Dmitry Zhurov, N. M. Budnev, R. Mirzoyan, M. Slunecka, B. M. Sabirov, Bayarto Lubsandorzhiev, I. I. Yashin, P. Kirilenko, Andrey Sokolov, V. S. Ptuskin, V.A. Tabolenko, I. I. Astapov, L. G. Sveshnikova, Yu. A. Semeney, V. V. Lenok, A. Porelli, O. G. Grishin, R. R. Mirgazov, Oleg Fedorov, A. Borodin, R. Wischnewski, Evgenii V Rjabov, Aleksandr Gafarov, A. A. Silaev, R. D. Monkhoev, T. I. Gress, Valery Zurbanov, Roman Raikin, E.G. Popova, A. A. Grinyuk, L. V. Pankov, A. N. Dyachok, and M. Popescu

Subjects
Physics, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, General Physics and Astronomy, Astronomy, Cosmic ray, IACT, Radiation, law.invention, Telescope, law, Observatory, Cherenkov radiation
Abstract

Work is currently under way in the Tunka Valley, 50 km from Lake Baikal, to create the TAIGA gamma observatory for studying gamma radiation and cosmic ray fluxes in the 1013–1018 eV range of energies. To detect gamma rays with energies above tens of TeV, a hybrid method of detecting showers is implemented. It is based on data obtained by the TAIGA Imaging Atmospheric Cherenkov Telescope (IACT) and the wide-angle TAIGA-HiSCORE array. The preliminary results from processing the telescope’s data for the low-energy region (>2–3 TeV) are presented. Joint events with energy more than 50 TeV are analyzed and compared to Monte Carlo calculations.

Published
2019
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240. Monte Carlo Simulation of the TAIGA Experiment

Author

R. D. Monkhoev, T. I. Gress, Y. Sagan, R. R. Mirgazov, L. A. Kuzmichev, V. M. Grebenyuk, Oleg Fedorov, M. Brueckner, N. B. Lubsandorzhiev, A. V. Skurikhin, A. Borodin, A. Ivanova, Yu. Lemeshev, E.G. Popova, V.A. Tabolenko, Dmitry Zhurov, B.A. Tarashansky, S. Kiryuhin, A. V. Tkachenko, Mikhail Panasyuk, Dieter Horns, M. Tluczykont, V. S. Ptuskin, A. Pushnin, Roman Raikin, O. G. Grishin, Anatoly Lagutin, A. Chiavassa, A. A. Petrukhin, R. Mirzoyan, V. Prosin, Evgeny Postnikov, Valery Zurbanov, C. Spiering, A. A. Grinyuk, Yulia Kazarina, M. Kunnas, O. A. Gress, L. G. Sveshnikova, A. Pakhorukov, R. Wischnewski, L. G. Tkachev, A. N. Dyachok, V. A. Poleschuk, M. Slunecka, Bayarto Lubsandorzhiev, V. A. Kozhin, Andrey Sokolov, I. I. Astapov, M. Popescu, A. Yu. Garmash, E. A. Kravchenko, Evgenii V Rjabov, B. M. Sabirov, E. E. Korosteleva, V. V. Kindin, I. I. Yashin, Grigory Rubtsov, N. N. Kalmykov, R. P. Kokoulin, L. V. Pankov, N. M. Budnev, P. Kirilenko, V. V. Lenok, A. Porelli, Yu. A. Semeney, V. Samoliga, E. A. Osipova, Pavel Bezyazeekov, V. Boreyko, N. V. Gorbunov, Aleksandr Gafarov, A. A. Silaev, Aleksey Zagorodnikov, K. G. Kompaniets, and A. Yu. Sidorenkov

Subjects
010302 applied physics, Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Cosmic ray, 01 natural sciences, Software, Air shower, Observatory, 0103 physical sciences, business, Energy (signal processing), Cherenkov radiation, Remote sensing
Abstract

The TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma-ray Astronomy) experiment aims at observing gamma-rays in the energy range from 1 TeV to several 100 TeV. The operation of the observatory is based on a new hybrid approach that combines imaging air Cherenkov telescopes (IACTs) and wide-angle Cherenkov detectors (TAIGA-HiSCORE) for measuring times of extensive air shower (EAS) light front arrival. Monte Carlo simulations are compared to real data to determine the performance of the detector setup. Dedicated software and algorithms are described, model parameters are given, and an overview of the current status of model-based performance studies is presented.

Published
2019
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241. The Search for and Study of EAS Candidates in the TUS Orbital Experiment

Author

A. V. Tkachenko, L. G. Tkachev, A. A. Grinyuk, and M. V. Lavrova

Subjects
010302 applied physics, Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Astronomy, Cosmic ray, Tracking (particle physics), 01 natural sciences, Orbit, 0103 physical sciences, Satellite, Astrophysics::Earth and Planetary Astrophysics, Cherenkov radiation
Abstract

The TUS (Tracking Ultraviolet Setup) detector aboard the Lomonosov satellite was launched into a Sun-synchronous orbit with an altitude of ~500 km on April 28, 2016. The main purpose of the TUS orbital experiment is to search for ultra-high energy cosmic rays (UHECRs) with Е > 70 EeV by measuring the fluorescence and Cherenkov radiation of extensive air showers (EASes) in the Earth’s atmosphere. The design and operating principles of the TUS detector are briefly described. A multilevel algorithm developed to search for and reconstruct EAS events (candidates) in the region of UHECRs is used to analyze the TUS data. Preliminary results from the TUS in orbit, including the results from the search for and study of identified EAS candidates, are presented.

Published
2019
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242. TAIGA: A Complex of Hybrid Systems of Cooperating Detectors for Gamma Astronomy and Cosmic Ray Physics in the Tunka Valley

Author

Evgeny Postnikov, Roman Raikin, O. A. Gress, A. A. Grinyuk, V. A. Kozhin, V. V. Kindin, V. Samoliga, V. A. Poleschuk, M. Slunecka, Bayarto Lubsandorzhiev, A. Chiavassa, R. R. Mirgazov, V. S. Ptuskin, R. Mirzoyan, A. Yu. Garmash, V. Prosin, L. A. Kuzmichev, V. M. Grebenyuk, Anatoly Lagutin, Oleg Fedorov, M. Kunnas, L. V. Pankov, E. A. Osipova, Pavel Bezyazeekov, A. A. Petrukhin, Aleksandr Gafarov, Mihai Popescu, R. Wischnewski, A. A. Silaev, M. Tluczykont, A. V. Skurikhin, A. Borodin, Mikhail Panasyuk, R. D. Monkhoev, T. I. Gress, Aleksey Zagorodnikov, A. V. Tkachenko, Dieter Horns, N. B. Lubsandorzhiev, N. V. Gorbunov, Dmitry Zhurov, A. Ivanova, L. G. Sveshnikova, A. Tanaev, I. I. Yashin, N. I. Karpov, E.G. Popova, O. G. Grishin, A. N. Dyachok, R. Nakhtigal, A. Pakhorukov, L. G. Tkachev, V.A. Tabolenko, Y. Sagan, K. G. Kompaniets, A. Porelli, Valery Zurbanov, A. Pushnin, E. A. Kravchenko, A. Yu. Sidorenkov, E. E. Korosteleva, S. Kiryuhin, R. P. Kokoulin, V. P. Sulakov, B.A. Tarashansky, Y. Kazarina, P. Kirilenko, Andrey Sokolov, N. M. Budnev, V. V. Lenok, Grigory Rubtsov, N. N. Kalmykov, C. Spiering, and I. I. Astapov

Subjects
010302 applied physics, COSMIC cancer database, 010308 nuclear & particles physics, Observatory, 0103 physical sciences, Detector, Taiga, Gamma ray detectors, General Physics and Astronomy, Astronomy, Cosmic ray, Radiation, 01 natural sciences
Abstract

The relevance and benefits of the new TAIGA gamma observatory complex in the Tunka Valley (50 km from Lake Baikal) are discussed. The main aim of the TAIGA installation is to study high-energy gamma radiation and search for cosmic pevatrons. The first series of gamma stations was commissioned in 2019 and covers an area of 1 km2. Its expected integral gamma radiation sensitivity at an energy of 100 TeV over 300 h of source monitoring is (2–5) × 10−13 TeV cm−2 s−1. It is planned to expand the effective area of TAIGA gamma observation to 10 km2 in the future.

Published
2019
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243. Treatment of comorbid patients with chronic brain ischemia and vertebrogenic pain syndromes

Author

N. V. Vakhnina, E. Yu. Kalimeeva, V. V. Grinyuk, and Vladimir Vladimirovich Zakharov

Subjects
business.industry, microangiopathy, General Medicine, medicine.disease, Brain ischemia, 03 medical and health sciences, 0302 clinical medicine, chronic brain ischemia, leucoareosis, Anesthesia, Medicine, 030212 general & internal medicine, chronic pain syndrome, business, Vertebrogenic Pain Syndromes, 030217 neurology & neurosurgery
Abstract

Chronic brain ischemia and chronic pain both appear to be an extremely wide-spread disease. The reasons of widespread comorbidity of ischemic brain disease and chronic pain are common risk factors: old age, decrease of physical activity, syndrome of systemic inflammation and emotional disturbances. Treatment of patients with cerebrovascular diseases and chronic pain should influence common mechanisms of these disorders. Correction of microcirculatory disturbances pays particular important role, because this is the mechanism not only of chronic cerebral ischemia but compressive-ischemic radiculo- and neuropathy also.

Published
2019

244. DEVELOPMENT OF THE PROJECT OF A UNIFIED SYSTEM OF PROCESSING, DISPOSAL AND DISPOSAL OF BALLAST OF SOLID COMMUNAL WASTE ON THE EXAMPLE OF RECONSTRUCTION OF POLYGON OF SOLID COMMUNAL WASTE «GUSINOBRODSKIY»

Author

Maria Sidorova and Alina Grinyuk

Subjects
Unified system, Ballast, Development (topology), Computer science, Polygon, Civil engineering
Abstract

The article has developed a project for the reconstruction and recultivation of the Gusinobrodsky solid municipal waste landfill to create a complex system for the processing, utiliza-tion and disposal of the ballast of municipal solid waste. New, environmentally friendly and cost-effective areas have been selected to provide a modern system for the management of municipal waste.

Published
2019
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246. TAIGA—A hybrid array for high energy gamma-ray astronomy and cosmic-ray physics

Author

N. Budnev, I. Astapov, P. Bezyazeekov, E. Bonvech, A. Borodin, A. Bulan, A. Chiavassa, D. Chernov, A. Dyachok, A. Gafarov, A. Garmash, V. Grebenyuk, O. Gress, E. Gress, T. Gress, A. Grinyuk, O. Grishin, A.D. Ivanova, A.L. Ivanova, N. Kalmykov, V. Kindin, S. Kiryuhin, R. Kokoulin, K. Komponiets, E. Korosteleva, V. Kozhin, E. Kravchenko, A. Kryukov, L. Kuzmichev, A. Lagutin, M. Lavrova, Y. Lemeshev, B. Lubsandorzhiev, N. Lubsandorzhiev, A. Lukanov, D. Lukyantsev, S. Malakhov, R. Mirgazov, R. Monkhoev, E. Okuneva, E. Osipova, A. Pakhorukov, A. Pan, L. Panasenko, L. Pankov, A.D. Panov, A. Petrukhin, I. Poddubny, D. Podgrudkov, V. Poleschuk, V. Ponomareva, E. Popova, E. Postnikov, V. Prosin, V. Ptuskin, A. Pushnin, R. Raikin, A. Razumov, G. Rubtsov, E. Ryabov, Y. Sagan, V. Samoliga, A. Silaev, A. Sidorenkov, A. Skurikhin, A. Sokolov, L. Sveshnikova, V. Tabolenko, A. Tanaev, B. Tarashchansky, M.Y. Ternovoy, L. Tkachev, R. Togoo, N. Ushakov, A. Vaidyanathan, P. Volchugov, N. Volkov, D. Voronin, A. Zagorodnikov, A. Zhaglova, D. Zhurov, and I. Yashin

Subjects
ImagingTAIGA-IACTarray, Nuclear and High Energy Physics, Cosmicray, TimingTAIGA-HiSCOREarray, Gammaastronomy, Instrumentation
Published
2022
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247. ON RESOLUTION OF ELECTRON IMAGES OF DEVISED DEVICES COVERED WITH NANOTECHNOLOGICAL FILMS

Author

E.A. Acheeva, V.N. Grinyuk, and V.A. Sozaev

Subjects
nanotech films, electron-optical converter, the blur parameter of the electron energy, Physical and theoretical chemistry, QD450-801
Abstract

The possibility for optical resolution of electron-optic transformers by means of selection of initial energy of electrons within the film of thicknesses 46÷282 nm has been shown

Published
2011

249. Induced surface and curvature tension equation of state for hadron resonance gas in finite volumes and its relation to morphological thermodynamics

Author

K. A. Bugaev, O. V. Vitiuk, B. E. Grinyuk, P. P. Panasiuk, N. S. Yakovenko, E. S. Zherebtsova, V. V. Sagun, O. I. Ivanytskyi, L. V. Bravina, D. B. Blaschke, S. Kabana, S. V. Kuleshov, A. V. Taranenko, E. E. Zabrodin, and G. M. Zinovjev

Subjects
Nuclear and High Energy Physics, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics
Abstract

Here we develop an original approach to investigate the grand canonical partition function of the multicomponent mixtures of Boltzmann particles with hard-core interaction in finite and even small systems of the volumes above 20 fm$^3$. The derived expressions of the induced surface tension equation of state are analyzed in details. It is shown that the metastable states, which can emerge in the finite systems with realistic interaction, appear at very high pressures at which the hadron resonance gas, most probably, is not applicable at all. It is shown how and under what conditions the obtained results for finite systems can be generalized to include into a formalism the equation for curvature tension. The applicability range of the obtained equations of induced surface and curvature tensions for finite systems is discussed and their close relations to the equations of the morphological thermodynamics are established. The hadron resonance gas model on the basis of the obtained advanced equation of state is worked out. Also, this model is applied to analyze the chemical freeze-out of hadrons and light nuclei with the number of (anti-)baryons not exceeding 4, including the most problematic ratios of hyper-triton and its antiparticle. Their multiplicities were measured by the ALICE Collaboration in the central lead-lead collisions at the center-of-mass energy $\sqrt{s_{\rm NN}} =$ 2.76 TeV., 24 pages, 3 figures and 1 table

Published
2021

250. Processes Induced in DLC/Polyimide Structures by Irradiation with 60Co γ-Rays.

Author

Kharchenko, A. A., Fedotova, Yu. A., Zur, I. A., Brinkevich, D. I., Brinkevich, S. D., Grinyuk, E. V., Prosolovich, V. S., Movchan, S. A., Remnev, G. E., Linnik, S. A., and Lastovskii, S. B.

Subjects
IRRADIATION, VIBRATIONAL spectra, POLYIMIDE films, GROUP formation, POLYIMIDES, ABSORPTION spectra
Abstract

The DLC/Kapton structures irradiated with 60Co γ-rays at doses to 1 MGy have been studied by measuring transmission and attenuated total reflection (ATR) spectra. It has been shown that there are significant changes in the spectra in the ranges of vibrations of О–Н, CH2, and CH3 bonds due to radiation-induced processes in the byproducts of polyimide synthesis and residual solvents. Significant differences were found in the radiation-induced processes occurring in the bulk and near-surface region of a polyimide film and DLC/polyimide structures. After irradiation, the bulk of polyimide exhibited bands due to asymmetric and symmetric vibrations of the CH3 group. Bands associated with the vibrations of the CH2 group were additionally observed in the near-surface region. The formation of CH2 groups in the near-surface layer under irradiation was more pronounced in DLC/polyimide structures than in polyimide films; this was due to the additional supply of hydrogen from the DLC film. [ABSTRACT FROM AUTHOR]

Published
2022
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