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1. Measuring muon tracks in Baikal-GVD using a fast reconstruction algorithm

Author: V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, R. Bannasch, Z. Bardačová, I. A. Belolaptikov, I. V. Borina, V. B. Brudanin, N. M. Budnev, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, R. Dvornický, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, E. Eckerová, T. V. Elzhov, L. Fajt, S. V. Fialkovski, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, M. S. Katulin, K. G. Kebkal, O. G. Kebkal, E. V. Khramov, M. M. Kolbin, K. V. Konischev, K. A. Kopański, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, M. K. Kryukov, V. F. Kulepov, Pa. Malecki, Y. M. Malyshkin, M. B. Milenin, R. R. Mirgazov, D. V. Naumov, V. Nazari, W. Noga, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, B. A. Shaybonov, M. D. Shelepov, F. Šimkovic, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, I. Štekl, A. P. Stromakov, E. O. Sushenok, O. V. Suvorova, V. A. Tabolenko, B. A. Tarashansky, Y. V. Yablokova, S. A. Yakovlev, and D. N. Zaborov
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The Baikal Gigaton Volume Detector (Baikal-GVD) is a km $$^3$$ 3 -scale neutrino detector currently under construction in Lake Baikal, Russia. The detector consists of several thousand optical sensors arranged on vertical strings, with 36 sensors per string. The strings are grouped into clusters of 8 strings each. Each cluster can operate as a stand-alone neutrino detector. The detector layout is optimized for the measurement of astrophysical neutrinos with energies of $$\sim $$ ∼ 100 TeV and above. Events resulting from charged current interactions of muon (anti-)neutrinos will have a track-like topology in Baikal-GVD. A fast $$\chi ^2$$ χ 2 -based reconstruction algorithm has been developed to reconstruct such track-like events. The algorithm has been applied to data collected in 2019 from the first five operational clusters of Baikal-GVD, resulting in observations of both downgoing atmospheric muons and upgoing atmospheric neutrinos. This serves as an important milestone towards experimental validation of the Baikal-GVD design. The analysis is limited to single-cluster data, favoring nearly-vertical tracks.
Published: 2021
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2. Two Distinct Mechanisms of Transgenic Resistance Mediated by Groundnut Rosette Virus Satellite RNA Sequences

Author: M. E. Taliansky, E. V. Ryabov, and D. J. Robinson
Subjects: groundnut rosette disease, Microbiology, QR1-502, Botany, QK1-989
Abstract: Transformation of Nicotiana benthamiana with full-length sequences of a mild variant of the groundnut rosette virus (GRV) satellite RNA (sat-RNA) yielded plants that did not produce symptoms when inoculated with GRV and a virulent sat-RNA. Two different resistance mechanisms operated in different transformed lines. In the first, plants contained high levels of transcript RNA, and replication of both sat-RNA and GRV genomic RNA was inhibited. This mechanism is analogous to the down-regulation of GRV genomic and sat-RNA replication in infections containing the mild sat-RNA, and indeed infection of sat-RNA transgenic plants with GRV was shown to lead to liberation of unit-length sat-RNA from transgene transcripts. In the second resistance mechanism, plants contained low transcript RNA levels, and replication of sat-RNA but not of GRV genomic RNA was inhibited. These plants were also resistant to infection by potato virus X derivatives containing GRV sat-RNA sequences. This mechanism is an example of homology-dependent gene silencing or cosuppression. Resistant plants were also produced by transformation with sequences representing only the 5′ terminal one-third of the mild sat-RNA; the mechanism of resistance in these plants was of the cosuppression type.
Published: 1998
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3. Deep-Underwater Cherenkov Detector in Lake Baikal

Author: A.V. Avrorin, A. D. Avrorin, V. M. Ayinutdinov, V. A. Allakhverdyan, P. Banash, Z. Bardachova, I. A. Belolaptikov, I. V. Borina, V. B. Brudanin, N. M. Budnev, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gres’, R. Dwornitski, Zh.-A. M. Dzhilkibaev, V. Ya. Dik, G. V. Domogatskii, A. A. Doroshenko, A. N. Dyachok, T. V. Elzhov, D. N. Zaborov, M. S. Katulin, K. G. Kebkal, O. G. Kebkal, V. A. Kozhin, M. M. Kolbin, K. V. Konishchev, K. A. Kopanski, A. V. Korobchenko, A. P. Koshechkin, M. V. Kruglov, M. K. Kryukov, V. F. Kulepov, P. Maletski, Yu. M. Malyshkin, M. B. Milenin, R. R. Mirgazov, V. Nazari, D. V. Naumov, V. Noga, D. P. Petukhov, E. N. Pliskovskii, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, A. P. Stromakov, O. V. Suvorova, E. O. Sushenok, V. A. Tabolenko, B. A. Tarashchanskii, L. Fait, S. V. Fialkovskii, E. V. Khramov, B. A. Shaibonov, M. D. Shelepov, F. Šimkovic, I. Stekl, E. Etskerova, Yu. V. Yablokova, and S. A. Yakovlev
Subjects: General Physics and Astronomy
Published: 2022
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4. Astroclimate of the High Mountain Plains of the Greater Altai, According to Satellite Remote Sensing Data: Potential for Deploying a Full-Scale Gamma Astronomy Experiment

Author: E. Yu. Mordvin, N. V. Volkov, A. I. Revyakin, R. Togoo, I. I. Astapov, P. A. Bezyazeekov, M. Blank, E. A. Bonvech, A. N. Borodin, M. Bruchner, N. M. Budnev, A. Bulan, A. Vaidyanathan, R. Wischnewski, P. A. Volchugov, D. M. Voronin, A. Yu. Garmash, A. R. Gafarov, 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, R. P. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. Chiavassa, A. A. Lagutin, Yu. E. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, A. Pan, M. I. Panasyuk, L. V. Pankov, A. A. Petrukhin, D. A. Podgrudkov, V. A. Poleschuk, M. Popescu, E. G. Popova, A. Porelli, E. B. Postnikov, V. V. Prosin, V. S. Ptuskin, A. A. Pushnin, R. I. Raikin, G. I. Rubtsov, E. V. Ryabov, Y. I. Sagan, V. S. Samoliga, L. G. Sveshnikova, A. A. Silaev, A. Yu. Sidorenkov, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, Ya. V. Suvorkin, V. A. Tabolenko, A. B. Tanaev, B. A. Tarashansky, M. Yu. Ternovoy, L. G. Tkachev, M. Tluczykont, N. A. Ushakov, D. Horns, D. V. Chernov, and I. I. Yashin
Subjects: General Physics and Astronomy
Published: 2022
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5. Development of the Double Cascade Reconstruction Technique in the Baikal-GVD Neutrino Telescope

Author: Eliška Eckerová, V. A. Allakhverdyan, А. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, Zuzana Bardačová, I. A. Belolaptikov, I. V. Borina, N. M. Budnev, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, R. Dvornický, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, T. V. Elzhov, L. Fajt, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, K. G. Kebkal, O. G. Kebkal, A. Khatun, E. V. Khramov, M. M. Kolbin, K. V. Konischev, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, V. F. Kulepov, Y. M. Malyshkin, M. B. Milenin, R. R. Mirgazov, D. V. Naumov, V. Nazari, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, D. Seitova, B. A. Shaybonov, M. D. Shelepov, F. Šimkovic, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, I. Štekl, A. P. Stromakov, O. V. Suvorova, V. A. Tabolenko, Y. V. Yablokova, and D. N. Zaborov
Published: 2023
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6. The Baikal-GVD telescope follow-up analysis of the IceCube neutrino alerts

Author: Viktoriya Dik, O. V. Suvorova, V. A. Allakhverdyan, А. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, Z. Bardаčová, I. A. Belolaptikov, I. V. Borina, N. M. Budnev, G. V. Domogatsky, A. A. Doroshenko, R. Dvornický, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, Eliška Eckerová, T. V. Elzhov, L. Fajt, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, K. G. Kebkal, V. K. Kebkal, A. Khatun, E. V. Khramov, M. M. Kolbin, K. V. Konischev, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, V. F. Kulepov, Y. M. Malyshkin, M. B. Milenin, R. R. Mirgazov, D. V. Naumov, V. Nazari, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, D. Seitova, B. A. Shaybonov, M. D. Shelepov, F. Šimkovic, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, I. Štekl, A. P. Stromakov, V. A. Tabolenko, Y. V. Yablokova, and D. N. Zaborov
Published: 2023
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7. Selection techniques of neutrino-induced cascades in the Baikal-GVD neutrino telescope

Author: Zuzana Bardačová, V. A. Allakhverdyan, А. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, I. A. Belolaptikov, I. V. Borina, N. M. Budnev, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, A. N. Dyachok, Ratislav Dvornický, Zh.-A. M. Dzhilkibaev, Eliška Eckerová, T. V. Elzhov, L. Fajt, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, K. G. Kebkal, O. G. Kebkal, A. Khatun, E. V. Khramov, M. M. Kolbin, K. V. Konischev, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, V. F. Kulepov, Y. M. Malyshkin, M. B. Milenin, R. R. Mirgazov, D. V. Naumov, V. Nazari, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, D. Seitova, B. A. Shaybonov, M. D. Shelepov, F. Šimkovic, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, I. Štekl, A. P. Stromakov, O. V. Suvorova, V. A. Tabolenko, Y. V. Yablokova, and D. N. Zaborov
Published: 2023
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8. Deep-Water Neutrino Telescope in Lake Baikal

Author: V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, R. Bannasch, Z. Bardačová, I. A. Belolaptikov, I. V. Borina, V. B. Brudanin, N. M. Budnev, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, R. Dvornický, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, E. Eckerová, T. V. Elzhov, L. Fajt, S. V. Fialkovsky, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, M. S. Katulin, K. G. Kebkal, O. G. Kebkal, E. V. Khramov, M. M. Kolbin, K. V. Konischev, K. A. Kopański, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, M. K. Kryukov, V. F. Kulepov, Pa. Malecki, Y. M. Malyshkin, M. B. Milenin, R. R. Mirgazov, D. V. Naumov, V. Nazari, W. Noga, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, B. A. Shaybonov, M. D. Shelepov, F. Šimkovic, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, I. Štekl, A. P. Stromakov, E. O. Sushenok, O. V. Suvorova, V. A. Tabolenko, B. A. Taraschansky, Y. V. Yablokova, S. A. Yakovlev, and D. N. Zaborov
Subjects: Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics
Published: 2021
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9. High-Energy Neutrino Astronomy and the Baikal-GVD Neutrino Telescope

Author: A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, R. Bannasch, Z. Bardáčová, I. A. Belolaptikov, V. Dik, V. B. Brudanin, N. M. Budnev, G. V. Domogatsky, A. A. Doroshenko, R. Dvornický, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, E. Eckerová, T. V. Elzhov, L. Fajt, S. V. Fialkovski, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, R. A. Ivanov, M. S. Katulin, K. G. Kebkal, O. G. Kebkal, E. V. Khramov, M. M. Kolbin, K. V. Konischev, K. A. Kopański, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, M. K. Kryukov, V. F. Kulepov, M. B. Milenin, R. R. Mirgazov, D. V. Naumov, V. Nazari, W. Noga, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, B. A. Shaybonov, M. D. Shelepov, F. Šimkovic, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, I. Štekl, E. O. Sushenok, O. V. Suvorova, V. A. Tabolenko, B. A. Tarashansky, Y. V. Yablokova, S. Yakovlev, and D. N. Zaborov
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Nuclear and High Energy Physics, High energy, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Northern Hemisphere, FOS: Physical sciences, Astronomy, Construction plan, Atomic and Molecular Physics, and Optics, Universe, Neutrino, Neutrino astronomy, Astrophysics - High Energy Astrophysical Phenomena, Effective volume, media_common
Abstract: Neutrino astronomy offers a novel view of the non-thermal Universe and is complementary to other astronomical disciplines. The field has seen rapid progress in recent years, including the first detection of astrophysical neutrinos in the TeV-PeV energy range by IceCube and the first identified extragalactic neutrino source (TXS 0506+056). Further discoveries are aimed for with new cubic-kilometer telescopes in the Northern Hemisphere: Baikal-GVD, in Lake Baikal, and KM3NeT-ARCA, in the Mediterranean sea. The construction of Baikal-GVD proceeds as planned; the detector currently includes over 2000 optical modules arranged on 56 strings, providing an effective volume of 0.35 km$^3$. We review the scientific case for Baikal-GVD, the construction plan, and first results from the partially built array., 9 pages, 5 figures, to be published in Proceedings of the 5-th International Conference on Particle Physics and Astrophysics (ICPPA-2020), October 5-9, 2020
Published: 2021
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10. First Results from Operating a Prototype Wide-Angle Telescope for the TAIGA Installation

Author: D. A. Podgrudkov, E. A. Bonvech, I. V. Vaiman, D. V. Chernov, I. I. Astapov, P. A. Bezyazeekov, M. Blank, A. N. Borodin, M. Brückner, N. M. Budnev, A. V. Bulan, A. Vaidyanathan, R. Wischnewski, P. A. Volchugov, D. M. Voronin, A. R. Gafarov, O. A. Gress, T. I. Gress, O. G. Grishin, A. Yu. Garmashi, V. M. Grebenyuk, A. V. Grinyuk, A. N. Dyachok, D. P. Zhurov, A. V. Zagorodnikov, A. L. Ivanova, N. N. Kalmykov, V. V. Kindin, S. N. Kiryuhin, R. L. Kokoulin, K. G. Kompaniets, E. E. Korosteleva, V. A. Kozhin, E. A. Kravchenko, A. P. Kryukov, L. A. Kuzmichev, A. Chiavassa, M. Lavrova, A. A. Lagutin, Yu. E. Lemeshev, B. K. Lubsandorzhiev, N. B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. D. Monkhoev, E. A. Osipova, A. L. Pakhorukov, A. Pan, M. I. Panasyuk, L. V. Pankov, A. A. Petrukhin, 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, G. I. Rubtsov, E. V. Ryabov, Ya. I. Sagan, V. S. Samoliga, A. A. Silaev, A. Yu. Sidorenkov, A. V. Skurikhin, M. Slunecka, A. V. Sokolov, L. G. Sveshnikova, Ya. V. Suvorkin, V. A. Tabolenko, A. V. Tanaev, B. A. Tarashansky, M. Yu. Ternovoy, L. G. Tkachev, M. Tluczykont, N. A. Ushakov, D. Horns, and I. V. 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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11. High-Energy Neutrino Follow-up at the Baikal-GVD Neutrino Telescope

Author: Z. Bardačová, T. I. Gress, M. S. Katulin, K. V. Konishchev, K.V. Golubkov, Lukas Fajt, Mark Shelepov, E. V. Ryabov, A. V. Skurikhin, M.M. Kolbin, W. Noga, B. A. Tarashchansky, V. A. Kozhin, D. N. Zaborov, A.P. Koshechkin, T. V. Elzhov, V. Ya. Dik, G.B. Safronov, A.V. Avrorin, Aleksandr Gafarov, E.N. Pliskovsky, O.G. Kebkal, V.D. Rushay, M.I. Rozanov, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, R. R. Mirgazov, A.G. Solovjev, V. Nazari, V. B. Brudanin, V.F. Kulepov, N. M. Budnev, S. V. Fialkovski, E.V. Khramov, Fedor Šimkovic, D. P. Petukhov, V. M. Aynutdinov, Yu. V. Yablokova, Sergey Yakovlev, K. A. Kopański, N.S. Gorshkov, R. Bannasch, E. O. Sushenok, R. Dvornicky, A.V. Korobchenko, I. A. Belolaptikov, Konstantin Kebkal, I. Stekl, R. Ivanov, V.A. Tabolenko, Dmitry V. Naumov, A.D. Avrorin, G.V. Domogatsky, B.A. Shaybonov, A. N. Dyachok, E. Eckerová, Olga Suvorova, M.K. Kryukov, M. V. Milenin, M.N. Sorokovikov, and M.V. Kruglov
Subjects: Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Detector, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, 01 natural sciences, Monitoring program, law.invention, Telescope, Data acquisition, Space and Planetary Science, law, 0103 physical sciences, Neutrino, Underwater, 010303 astronomy & astrophysics, Event reconstruction
Abstract: The Baikal-GVD deep underwater neutrino experiment participates in the international multi-messenger program to detect the astrophysical sources of high- and ultrahigh-energy cosmic-ray particles, being at the stage of array deployment and a step-by-step increase of the telescope’s effective volume to the scale of a cubic kilometer. At present, the telescope consists of seven clusters containing 2016 photodetectors. The effective volume of the detector has reached 0.35 km $${}^{3}$$ for the selection of shower events from neutrino interactions in Baikal water. The experimental data have been accumulated in a continuous exposure mode since 2015, allowing a prompt data analysis and a celestial-sphere monitoring program to be implemented in real time. We discuss the structure of the data acquisition system, describe the physical event reconstruction procedure in the mode of fast response to alerts, and present the results of our analysis of nine alerts from the polar IceCube telescope from early September to late October 2020.
Published: 2021
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12. Status of the TAIGA Experiment: From Cosmic-Ray Physics to Gamma Astronomy in Tunka Valley

Author: Dmitry Chernov, A. V. Skurikhin, Andrey Sokolov, M. Slunecka, Grigory Rubtsov, N. N. Kalmykov, B. A. Tarashchansky, D. A. Podgrudkov, V. A. Poleschuk, Y. Suvorkin, P. Volchugov, A. L. Pakhorukov, Dieter Horns, N. M. Budnev, A. Tanaev, Roman Raikin, A. N. Dyachok, M. Tluczykont, A. A. Grinyuk, R. R. Mirgazov, A. Haungs, Evgeny Postnikov, N. B. Lubsandorzhiev, A. Pan, T. Marshalkina, Oleg Fedorov, V. Samoliga, V. S. Ptuskin, M. Kleifges, A. Chiavassa, Y. Sagan, R. Mirzoyan, A. Porelli, M. Brueckner, N. Ushakov, T. I. Gress, A. Borodin, V. Lenok, Aleksandr Gafarov, R. Togoo, A. Garmash, Dmitry Zhurov, A. A. Silaev, D. Kostyunin, L. G. Tkachev, A. V. Zagorodnikov, E. A. Osipova, V. Kiryuhin, E. V. Ryabov, Pavel Bezyazeekov, O. G. Grishin, D. Shipilov, A. Ivanova, E. Popova, O. A. Gress, L. G. Sveshnikova, A. Vaidyanathan, L. V. Pankov, B. K. Lubsandorzhiev, V. A. Kozhin, V. V. Kindin, M. Ternovoy, L. A. Kuzmichev, V. M. Grebenyuk, I. I. Astapov, R. Wischnewski, Mikhail Panasyuk, Frank G. Schröder, A. Pushnin, A. Bulan, A. Bonvech, K. G. Kompaniets, D. Voronin, V.A. Tabolenko, E. A. Kravchenko, D. Chernykh, E. E. Korosteleva, S. Malakhov, R. P. Kokoulin, A. A. Petrukhin, Yulia Kazarina, Ig. Yashin, Yu. Lemeshev, V. V. Prosin, Anatoly Lagutin, T. Huege, R. D. Monkhoev, Alexander Kryukov, and A. Sidorenkov
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Observatory, 0103 physical sciences, Taiga, Astronomy, Cosmic ray, Radiation, 010306 general physics, Hybrid approach, 01 natural sciences, Atomic and Molecular Physics, and Optics
Abstract: The importance and advantages of the hybrid approach developed within the TAIGA project for studying the high-energy section of the spectrum of gamma radiation in the Universe are discussed. The pilot complex of the TAIGA gamma observatory with an area of 1 km $${}^{2}$$ is briefly described along with the lines of its development, and the first results obtained on this basis are given.
Published: 2020
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13. Method and device for tests of the laser optical calibration system for the Baikal-GVD underwater neutrino Cherenkov telescope

Author: Konrad Kopański, Wojciech Noga, Paweł Malecki, V. A. Allakhverdyan, A. V. Avrorin, V. M. Aynutdinov, R. Bannasch, Zuzana Bardačová, I. A. Belolaptikov, I. V. Borina, V. Brudanin, N. M. Budnev, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, Rastislav Dvornicky, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, Eliška Eckerová, T. V. Elzhov, L. Fajt, Stanislav Vasilevich Fialkovsky, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, M. S. Katulin, K. G. Kebkal, O. G. Kebkal, E. V. Khramov, M. M. Kolbin, K. V. Konischev, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, M. K. Kryukov, V. F. Kulepov, Y. M. Malyshkin, M. B. Milenin, R. R. Mirgazov, D. V. Naumov, V. Nazari, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, B. A. Shaybonov, M. D. Shelepov, Fedor Šimkovic, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, Ivan Štekl, A. P. Stromakov, E. O. Sushenok, O. V. Suvorova, V. A. Tabolenko, B. Tarashansky, Y. V. Yablokova, S. Yakovlev, and D. N. Zaborov
Published: 2022
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14. 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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15. Neutrino Telescope in Lake Baikal: Present and Nearest Future

Author: M.B. Milenin, Ivan Štekl, V. Y. Dik, I. A. Belolaptikov, V. A. Kozhin, V.D. Rushay, V. Nazari, Mark Shelepov, V. B. Brudanin, V.F. Kulepov, I. V. Borina, D. N. Zaborov, O.G. Kebkal, A. P. Stromakov, M.I. Rozanov, A.P. Koshechkin, B.A. Tarashansky, Yury Malyshkin, A. E. Sirenko, A. A. Doroshenko, A.G. Solovjev, Zh.-A.M. Dzhilkibaev, Z. Bardаčová, Aleksandr Gafarov, K.V. Golubkov, M.V. Kruglov, А. D. Avrorin, K.V. Konischev, Pa. Malecki, B.A. Shaybonov, Evgeniy Khramov, A. V. Skurikhin, M.N. Sorokovikov, T. V. Elzhov, A. N. Dyachok, V.A. Tabolenko, Konstantin Kebkal, W. Noga, T. I. Gress, Lukas Fajt, G.B. Safronov, A.V. Korobchenko, R. R. Mirgazov, E. V. Ryabov, Rastislav Dvornický, N. M. Budnev, E. Eckerová, M.M. Kolbin, A.V. Avrorin, E.N. Pliskovsky, Olga Suvorova, D. P. Petukhov, G.V. Domogatsky, M. S. Katulin, V. M. Aynutdinov, K. A. Kopański, Sergey Yakovlev, M.K. Kryukov, Dmitry V. Naumov, V. A. Allakhverdyan, Fedor Šimkovic, N.S. Gorshkov, Y. V. Yablokova, R. Bannasch, S.V. Fialkovsky, and E. O. Sushenok
Subjects: Physics, Neutrino telescope, Astronomy
Published: 2021
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16. 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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17. Positioning system for Baikal-GVD

Author: A. A. Doroshenko, K.V. Konischev, Zh.-A.M. Dzhilkibaev, N.S. Gorshkov, Dmitry V. Naumov, B.A. Shaybonov, M.B. Milenin, D. N. Zaborov, Fedor Šimkovic, A.P. Koshechkin, A. E. Sirenko, A. P. Stromakov, A. N. Dyachok, Y. V. Yablokova, G.B. Safronov, A. V. Skurikhin, N. M. Budnev, Rastislav Dvornický, Evgeniy Khramov, I. A. Belolaptikov, R. R. Mirgazov, A.V. Avrorin, V.D. Rushay, B.A. Tarashansky, D. P. Petukhov, Konstantin Kebkal, W. Noga, V. A. Kozhin, V. A. Allakhverdyan, K. A. Kopański, Yury Malyshkin, E. Eckerová, V. Nazari, Olga Suvorova, V. Y. Dik, E.N. Pliskovsky, Mark Shelepov, O.G. Kebkal, M.I. Rozanov, I. V. Borina, M.V. Kruglov, S.V. Fialkovski, R. Bannasch, E. O. Sushenok, A.G. Solovjev, Pa. Malecki, I. Stekl, M.K. Kryukov, V.A. Tabolenko, T. I. Gress, Lukas Fajt, K.V. Golubkov, E. V. Ryabov, M.M. Kolbin, M.N. Sorokovikov, T. V. Elzhov, V. M. Aynutdinov, Sergey Yakovlev, A.V. Korobchenko, A.D. Avrorin, G.V. Domogatsky, V. B. Brudanin, V.F. Kulepov, Aleksandr Gafarov, M. S. Katulin, and Z. Bardačová
Subjects: Photomultiplier, Physics - Instrumentation and Detectors, Positioning system, Neutrino telescope, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), law.invention, Telescope, Upgrade, law, Acoustic modem, Polling, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Trilateration, Geology, Remote sensing
Abstract: Baikal-GVD is a kilometer scale neutrino telescope currently under construction in Lake Baikal. Due to water currents in Lake Baikal, individual photomultiplier housings are mobile and can drift away from their initial position. In order to accurately determine the coordinates of the photomultipliers, the telescope is equipped with an acoustic positioning system. The system consists of a network of acoustic modems, installed along the telescope strings and uses acoustic trilateration to determine the coordinates of individual modems. This contribution discusses the current state of the positioning in Baikal-GVD, including the recent upgrade to the acoustic modem polling algorithm., Presented at 37th International Cosmic Ray Conference (ICRC 2021)
Published: 2021
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18. 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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19. Automatic data processing for Baikal-GVD neutrino observatory

Author: Bair Shaybonov, R. Bannasch, Rastislav Dvornicky, L. Fajt, Pa. Malecki, V. Nazari, W. Noga, Fedor Šimkovic, Ivan Štekl, V. A. Allakhverdyan, A. V. Avrorin, V. M. Aynutdinov, Zuzana Bardačová, I. A. Belolaptikov, I. V. Borina, V. Brudanin, N. M. Budnev, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, R. Dv Ornicky, A. N. Dyachok, Zh.-A. M. Dzhilkibaev, Eliška Eckerová, T. V. Elzhov, Stanislav Vasilevich Fialkovsky, A. R. Gafarov, K. V. Golubkov, N. S. Gorshkov, T. I. Gress, M. S. Katulin, K. G. Kebkal, O. G. Kebkal, E. V. Khramov, M. M. Kolbin, K. V. Konischev, K. A. Kopański, A. V. Korobchenko, A. P. Koshechkin, V. A. Kozhin, M. V. Kruglov, M. K. Kryukov, V. F. Kulepov, Pa . Malecki, Y. M. Malyshkin, M. B. Milenin, R. R. Mirgazov, D. V. Naumov, D. P. Petukhov, E. N. Pliskovsky, M. I. Rozanov, V. D. Rushay, E. V. Ryabov, G. B. Safronov, M. D. Shelepov, A. E. Sirenko, A. V. Skurikhin, A. G. Solovjev, M. N. Sorokovikov, A. P. Stromakov, E. O. Sushenok, O. V. Suvorova, V. A. Tabolenko, B. Tarashansky, Y. V. Yablokova, S. Yakovlev, and D. N. Zaborov
Subjects: Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract: Baikal-GVD is a gigaton-scale neutrino observatory under construction in Lake Baikal. It currently produces about 100 GB of data every day. For their automatic processing, the Baikal Analysis and Reconstruction software (BARS) was developed. At the moment, it includes such stages as hit extraction from PMT waveforms, assembling events from raw data, assigning timestamps to events, determining the position of the optical modules using an acoustic positioning system, data quality monitoring, muon track and cascade reconstruction, as well as the alert signal generation. These stages are implemented as C++ programs which are executed sequentially one after another and can be represented as a directed acyclic graph. The most resource-consuming programs run in parallel to speed up processing. A separate Python package based on the luigi package is responsible for program execution control. Additional information such as the program execution status and run metadata are saved into a central database and then displayed on the dashboard. Results can be obtained several hours after the run completion., Presented at the 37th International Cosmic Ray Conference (ICRC 2021)
Published: 2021

20. 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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21. 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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22. Baikal Electromagnetic Experiment

Author: V. O. Serdyuk, R. R. Mirgazov, Ju. V. Gorokhov, N. M. Budnev, Valery Zurbanov, Evgeniy O. Kiktenko, S. M. Korotaev, E. V. Ryabov, D. A. Orekhova, and Mikhail Kruglyakov
Subjects: Atmospheric Science, Rift, 010504 meteorology & atmospheric sciences, Geophysics, 010502 geochemistry & geophysics, Oceanography, 01 natural sciences, Magnetic field, Current (stream), Atmosphere, Lithosphere, Electric field, Component (UML), Geology, 0105 earth and related environmental sciences, Hydrosphere
Abstract: The vertical component of the electric field Ez in the hydrosphere is not contaminated by the telluric component and therefore can effectively be used to monitor various processes in the hydrosphere itself, lithosphere, and atmosphere. For this purpose, the Ez monitoring experiment on the surface–floor base has been conducted in Lake Baikal since 2003. The lack of the telluric component is confirmed experimentally and justified by simulation. The effect and precursors of the close earthquake, the variations in total flows of water currents, and variations in the closing current of the Global Electric Circuit in the conducting Earth are studied. The measurements of macroscopic quantum nonlocal correlations have also been set up since 2012. Based on them, the possibility of forecasting processes with a large random component, in particular a remote earthquake, is demonstrated. On the territory adjacent to the deep-water monitoring site, measurements of the gradients of magnetic field variations have been underway since 2017; it is expected that these will be expanded to the entire coast of Lake Baikal. To interpret measurements, geoelectric models of the Baikal rift, which represent the known competing hypotheses, have been constructed.
Published: 2018
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23. Multi-messenger and real-time astrophysics with the Baikal-GVD telescope

Author: K.V. Konischev, K.V. Golubkov, B.A. Tarashansky, Y. V. Yablokova, A. E. Sirenko, V. B. Brudanin, V.F. Kulepov, Z. Bardаčová, V. Nazari, V. Y. Dik, V.D. Rushay, N. M. Budnev, V. A. Allakhverdyan, T. V. Elzhov, Aleksandr Gafarov, R. R. Mirgazov, D. P. Petukhov, A.V. Korobchenko, Mark Shelepov, D. N. Zaborov, A.P. Koshechkin, A.V. Avrorin, A.D. Avrorin, G.B. Safronov, K. A. Kopański, M.V. Kruglov, Fedor Šimkovic, I. Stekl, S.V. Fialkovski, V.A. Tabolenko, Rastislav Dvornický, G.V. Domogatsky, E.N. Pliskovsky, A. A. Doroshenko, E. Eckerová, R. Bannasch, Zh.-A.M. Dzhilkibaev, E. O. Sushenok, Pa. Malecki, Yury Malyshkin, A. P. Stromakov, A. V. Skurikhin, Olga Suvorova, W. Noga, O.G. Kebkal, T. I. Gress, M.I. Rozanov, M.K. Kryukov, A.G. Solovjev, Lukas Fajt, M.N. Sorokovikov, B.A. Shaybonov, A. N. Dyachok, E. V. Ryabov, M.M. Kolbin, M. S. Katulin, V. M. Aynutdinov, Sergey Yakovlev, I. V. Borina, V. A. Kozhin, M.B. Milenin, N.S. Gorshkov, Evgeniy Khramov, I. A. Belolaptikov, Konstantin Kebkal, and Dmitry V. Naumov
Subjects: Physics, High Energy Astrophysical Phenomena (astro-ph.HE), COSMIC cancer database, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Celestial sphere, Astrophysics, Magnetar, law.invention, Telescope, Cascade, law, Muon neutrino, High Energy Physics::Experiment, Neutrino, Gamma-ray burst, Astrophysics - High Energy Astrophysical Phenomena
Abstract: The Baikal-GVD deep underwater neutrino experiment participates in the international multi-messenger program on discovering the astrophysical sources of high energy fluxes of cosmic particles, while being at the stage of deployment with a gradual increase of its effective volume to the scale of a cubic kilometer. In April 2021 the effective volume of the detector has been reached 0.4 km3 for cascade events with energy above 100 TeV generated by neutrino interactions in Lake Baikal. The alarm system in real-time monitoring of the celestial sphere was launched at the beginning of 2021, that allows to form the alerts of two ranks like "muon neutrino" and "VHE cascade". Recent results of fast follow-up searches for coincidences of Baikal-GVD high energy cascades with ANTARES/TAToO high energy neutrino alerts and IceCube GCN messages will be presented, as well as preliminary results of searches for high energy neutrinos in coincidence with the magnetar SGR 1935+2154 activity in period of radio and gamma burst in 2020., Comment: Submitted to Proc. of the 37th International Cosmic Ray Conference (ICRC 2021), PoS-0946, July 12th -- 23rd, 2021, Online -- Berlin, Germany. 8 pages, 5 figures
Published: 2021
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24. Cherenkov EAS arrays in the Tunka astrophysical center: From Tunka-133 to the TAIGA gamma and cosmic ray hybrid detector

Author: R. R. Mirgazov, A. Chiavassa, V. Prosin, Oleg Fedorov, A. Borodin, L. G. Sveshnikova, A. V. Skurikhin, Evgeny Postnikov, E.G. Popova, O. G. Grishin, Dieter Horns, Martin Tluczykont, M. Slunecka, D. Zhurov, Bayarto Lubsandorzhiev, V.A. Tabolenko, A. V. Tkachenko, N. B. Lubsandorzhiev, A. Grinyuk, E. A. Kravchenko, V. Samoliga, E. A. Osipova, K. G. Kompaniets, Razmik Mirzoyan, E. E. Korosteleva, V. Kiryuhin, Pavel Bezyazeekov, Alexander Kryukov, A. Sidorenkov, A. Garmash, Valery Zurbanov, Aleksandr Gafarov, R. P. Kokoulin, Grigory Rubtsov, N. N. Kalmykov, A. A. Silaev, A. Pan, A. A. Petrukhin, Aleksey Zagorodnikov, M. Brückner, R. D. Monkhoev, T. I. Gress, A. Pushnin, Anatoly Lagutin, D. Voronin, E. V. Ryabov, Victor Grebenyuk, L. Tkachev, A. Pakharukov, I. I. Astapov, Roman Raikin, Ralf Wischnewski, L. A. Kuzmichev, V. V. Lenok, A. Porelli, Yu. A. Semeney, P. Kirilenko, A. N. Dyachok, Ch. Spiering, N. Ushakov, L. V. Pankov, Y. Sagan, I. V. Yashin, M. Popesku, V. S. Ptuskin, O. A. Gress, V. A. Kozhin, V. V. Kindin, V. A. Poleschuk, Mikhail Panasyuk, Y. Kazarina, B.A. Tarashansky, Andrey Sokolov, and N. M. Budnev
Subjects: Physics, Nuclear and High Energy Physics, Gamma-ray astronomy, Calorimeter (particle physics), 010308 nuclear & particles physics, Aperture, Cosmic rays, EAS Cherenkov light array, Energy spectrum, IACT, Detector, Gamma ray, Astronomy, Cosmic ray, 01 natural sciences, 7. Clean energy, 13. Climate action, 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation, Cherenkov radiation
Abstract: One of the most informative methods of cosmic ray studies is the detection of Cherenkov light from extensive air showers (EAS). The primary energy reconstruction is possible by using the Earth’s atmosphere as a huge calorimeter . The EAS Cherenkov light array Tunka-133, with ∼ 3 km 2 geometrical area, is taking data since 2009. Tunka-133 is located in the Tunka Astrophysical Center at ∼ 50 km west of Lake Baikal. This array allows us to perform a detailed study of the energy spectrum and the mass composition in the energy range from 6 ⋅ 1 0 15 eV to 1 0 18 eV . Most of the ongoing efforts are focused on the construction of the first stage of the detector TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy). The latter is designed for the study of gamma rays and charged cosmic rays in the energy range of 1 0 13 eV – 1 0 18 eV . The TAIGA prototype will consist of ∼ 100 wide angle timing Cherenkov stations (TAIGA-HiSCORE) and three IACTs deployed over an area of ∼ 1 km 2 . The installation of the array is planned to be finished in 2019 while the data-taking can start already during the commissioning phase. The joint reconstruction of energy, direction, and core position of the imaging and non-imaging detectors will allow us to increase the distance between the IACTs up to 800 m, therefore providing a low-cost, highly sensitive detector. The relatively low cost together with the high sensitivity for energies ≥ 30–50 TeV make this pioneering technique very attractive for exploring galactic PeVatrons and cosmic rays. In addition to the Cherenkov light detectors we intend to deploy surface and underground muon detectors over an area of 1 km 2 with a total area of about 1000 m 2 . The results of the first season of coincident operation of the first ∼ 4 m diameter IACT with an aperture of ∼ 10°with 30 stations of TAIGA-HiSCORE will be presented.
Published: 2020

25. The TAIGA Experiment: From Cosmic Ray Physics to Gamma Astronomy in the Tunka Valley

Author: L. V. Pankov, Evgeny Postnikov, E. A. Osipova, Yu. Lemeshev, V. S. Ptuskin, A. Pushnin, Pavel Bezyazeekov, V.A. Tabolenko, S. Kiryuhin, L. A. Kuzmichev, V. M. Grebenyuk, Yu. A. Semeney, V. Prosin, M. Slunecka, Bayarto Lubsandorzhiev, B.A. Tarashansky, V. A. Poleschuk, Mikhail Panasyuk, E. I. Kravchenko, N. B. Lubsandorzhiev, N. V. Gorbunov, K. G. Kompaniets, Grigory Rubtsov, N. N. Kalmykov, P. Kirilenko, E. E. Korosteleva, Dmitriy Kostunin, R. Mirzoyan, O. A. Gress, R. P. Kokoulin, A. Pakhorukov, Y. Kazarina, L. G. Tkachev, V. A. Kozhin, A. A. Petrukhin, V. V. Kindin, V. V. Lenok, E.G. Popova, V. Samoliga, A. Ivanova, A. Yu. Sidorenkov, N. M. Budnev, Aleksey Zagorodnikov, A. O. Skurikhin, Andrey Sokolov, I. I. Astapov, A. A. Grinyuk, Y. Sagan, A. V. Boreyko, A. N. Dyachok, L. G. Sveshnikova, A. Yu. Garmash, Dmitry Zhurov, O. G. Grishin, R. D. Monkhoev, T. I. Gress, A. V. Tkachenko, E. V. Ryabov, Aleksandr Gafarov, A. A. Silaev, R. R. Mirgazov, Valery Zurbanov, Oleg Fedorov, A. Borodin, B. M. Sabirov, and I. I. Yashin
Subjects: Physics, Nuclear and High Energy Physics, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Electron, Radiation, 01 natural sciences, Observatory, 0103 physical sciences, 010303 astronomy & astrophysics, Cherenkov radiation
Abstract: The article presents the relevance and advantages of the new gamma observatory TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy), which is being constructed in the Tunka Valley 50 km from Lake Baikal. Various detectors of the six TAIGA gamma observatory arrays register the Cherenkov and radio radiation, as well as the electron and muon components of EAS. The primary objective of the TAIGA gamma observatory is to study the high-energy part of the gamma-ray spectrum, in particular, in order to search for Galactic PeVatrons. The energy, direction, and position of the EAS axis are reconstructed in the observatory based on the data of the wide-angle Cherenkov detectors of the TAIGA-HiSCORE experiment. Taking into account this information, the gamma quanta are distinguished from the hadron background using the data obtained by the muon detectors and telescopes that register the EAS image in the Cherenkov light. In this hybrid mode of operation, the atmospheric Cherenkov telescopes can operate in the mono-mode, and the distance between them can be increased to 800–1000 m, which makes it possible to construct an array with an area of 5 km2 and more at relatively low cost and in a short time. By 2019, the first stage of the gamma observatory with an area of 1 km2 will be constructed; its expected integral sensitivity for detecting the gamma radiation with an energy of 100 TeV at observation of the source for 300 hours will be approximately $$2 \times 5$$ 10–13 TeV cm–2s–1.
Published: 2018
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26. Time synchronization system of Baikal-GVD

Author: T. I. Gress, A.V. Avrorin, Lukas Fajt, V. M. Aynutdinov, Sergey Yakovlev, E. V. Ryabov, M.M. Kolbin, Aleksandr Gafarov, M.N. Sorokovikov, T. V. Elzhov, O.G. Kebkal, R. R. Mirgazov, R. Bannasch, M.I. Rozanov, Z. Bardačová, Mark Shelepov, S.V. Fialkovsky, A. P. Stromakov, E. O. Sushenok, Dmitry V. Naumov, V. B. Brudanin, V.F. Kulepov, A.G. Solovjev, Evgeniy Khramov, Pa. Malecki, A. V. Skurikhin, A. A. Doroshenko, I. A. Belolaptikov, Konstantin Kebkal, I. Stekl, V.A. Tabolenko, Zh.-A.M. Dzhilkibaev, V. Y. Dik, W. Noga, Y. V. Yablokova, V.D. Rushay, V. A. Allakhverdyan, N.S. Gorshkov, Yury Malyshkin, B.A. Tarashansky, N. M. Budnev, K.V. Golubkov, D. P. Petukhov, A. E. Sirenko, K. A. Kopański, E.N. Pliskovsky, A.D. Avrorin, G.B. Safronov, G.V. Domogatsky, M. S. Katulin, M.V. Kruglov, Rastislav Dvornický, A.V. Korobchenko, Fedor Šimkovic, V. A. Kozhin, M.B. Milenin, K.V. Konischev, I. V. Borina, D. N. Zaborov, A.P. Koshechkin, V. Nazari, B.A. Shaybonov, A. N. Dyachok, E. Eckerová, Olga Suvorova, and M.K. Kryukov
Subjects: Physics, Neutrino detector, Electronic engineering, Instrumentation, Mathematical Physics, Time synchronization
Published: 2021
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27. The hybrid installation TAIGA: design, status and preliminary results

Author: Nima Lubsandorzhiev, I. Astapov, Pavel Bezyazeekov, A. Borodin, M. Brueckner, N. M. Budnev, V. Chernykh, A. Chiavassa, A. N. Dyachok, O. Fedorov, A. R. Gafarov, A. Garmash, V. Grebenyuk, O. Gress, T. I. Gress, A. Grinyuk, O. Grishin, Dieter Horns, A. Igoshin, A. Ivanova, N. Kalmykov, Y. Kazarina, V. Kindin, P. Kirilenko, S. Kiryuhin, R. Kokoulin, K. Kompaniets, E. Korosteleva, Vladimir V Kozhin, E. Kravchenko, Alexander Kryukov, L. Kuzmichev, A. Lagutin, Y. Lemeshev, V. Lenok, B. Lubsandorzhiev, 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, E. Postnikov, V. Prosin, V. Ptuskin, A. Pushnin, R. Raikin, G. Rubtsov, E. V. Ryabov, Y. Sagan, V. Samoliga, A. Silaev, A. Silaev(junior), Andrei Sidorenkov, A. V. Skurikhin, V. Slunecka, A. Sokolov, Y. Suvorkin, L. Sveshnikova, V. A. Tabolenko, B. Tarashchansky, L. Tkachev, M. Tluczykont, A. Tonaev, N. Ushakov, P. Volchugov, D. Voronin, R. Wischnewski, A. Zagorodnikov, D. Zhurov, and I. Yashin
Published: 2019
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28. Tunka-Grande and TAIGA-Muon scintillation arrays: status and prospects

Author: A. Porelli, Evgeny Postnikov, V. Chernykh, A. Petrukhin, E. A. Kravchenko, A. V. Skurikhin, E. E. Korosteleva, A. Pushnin, Y. Sagan, V. A. Poleschuk, Y. Suvorkin, Konstantin Ustinov, R. D. Monkhoev, R. P. Kokoulin, K. G. Kompaniets, Yu. Lemeshev, B. M. Sabirov, I. I. Astapov, V. V. Kindin, R. Mirzoyan, M. Popesku, Roman Raikin, Dieter Horns, M. Tluczykont, L. G. Tkachev, V. Samoliga, O. Grishin, A. A. Grinyuk, S. Kiryuhin, V. V. Prosin, V.A. Tabolenko, V. Slunecka, Grigory Rubtsov, N. N. Kalmykov, A. Chiavassa, BayarJon Paul Lubsandorzhiev, I. I. Yashin, V. S. Ptuskin, N. Ushakov, E. A. Osipova, Andrey Sokolov, N. B. Lubsandorzhiev, D. Zhurov, M. Ternovoy, M. Brueckner, Pavel Bezyazeekov, R. Wischnewski, D. Voronin, Yulia Kazarina, L. V. Pankov, A.V. Igoshin, O. A. Gress, A. Garmash, Alexander Kryukov, A. Pan, A. Sidorenkov, V. A. Kozhin, L. G. Sveshnikova, A. Ivanova, Aleksandr Gafarov, N. M. Budnev, B. A. Tarashchansky, A. Vaidyanathan, A. A. Silaev, A. V. Zagorodnikov, A. N. Dyachok, Anatoly Lagutin, P. Volchugov, L. A. Kuzmichev, A. L. Pakhorukov, V. M. Grebenyuk, Mikhail Panasyuk, A. Tanaev, E. Popova, R. R. Mirgazov, Oleg Fedorov, A. Borodin, T. I. Gress, and E. V. Ryabov
Subjects: Physics, History, Scintillation, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Taiga, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Computer Science Applications, Education
Abstract: The Tunka-Grande and TAIGA-Muon arrays are the part of a single experimental complex, which also includes the Tunka-133 and TAIGA-HiSCORE (High Sensitivity COsmic Rays and gamma Explorer) wide-angle Cherenkov arrays, TAIGA-IACT array (Imaging Atmospheric Cherenkov Telescope) and Tunka-Rex radio antennas array (Tunka Radio Extension). This complex is located in the Tunka Valley (Buryatia Republic, Russia), 50 km from Lake Baikal. It is aimed at investigating the energy spectrum and mass composition of charged cosmic rays in the energy range 100 TeV - 1000 PeV, searching for diffuse gamma rays above 100 TeV and studying local sources of gamma rays with energies above 30 TeV. This report outlines 3 key points. The first is a description of the Tunka-Grande and TAIGA-Muon scintillation arrays. The second part presents preliminary results of the search for diffuse gamma rays with energies above 50 PeV according to the Tunka-Grande data. The third part is devoted to the prospects of the search for diffuse gamma rays with energies above 100 TeV using the TAIGA-Muon array.
Published: 2020
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29. Data acquisition system for the Baikal-GVD neutrino telescope

Author: R. R. Mirgazov, V. M. Aynutdinov, O. N. Gaponenko, A. A. Doroshenko, Sergey Yakovlev, D.Yu. Bogorodsky, A.V. Korobchenko, B. A. Tarashchansky, Zh.-A.M. Dzhilkibaev, I. A. Belolaptikov, Konstantin Kebkal, V.A. Tabolenko, A. V. Skurikhin, V.B. Brudanin, R. Bannasch, A.A. Smagina, S.V. Fialkovsky, K.V. Golubkov, A.D. Avrorin, Zdenek Hons, V. A. Zhukov, G.V. Domogatsky, N. M. Budnev, E.N. Pliskovsky, A.A. Sheifler, I. A. Danilchenko, A. I. Panfilov, D.A. Kuleshov, Valery Zurbanov, O.G. Kebkal, F.K. Koshel, A. N. Dyachok, K.V. Konischev, M.I. Rozanov, T. I. Gress, E. V. Ryabov, Olga Suvorova, L. V. Pankov, A.P. Koshechkin, A.V. Avrorin, B. A. Shaibonov, Aleksandr Gafarov, M.B. Milenin, A. V. Zagorodnikov, V.F. Kulepov, E. A. Osipova, V. A. Kozhin, and V. I. Lyashuk
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Neutrino telescope, Detector, Volume (computing), Astrophysics, 01 natural sciences, Data acquisition, Neutrino detector, 0103 physical sciences, Neutrino, 010306 general physics, Digitization, Remote sensing, Data transmission
Abstract: The objective of the Baikal-GVD project is the construction of a km3-scale neutrino telescope in Lake Baikal. The Gigaton Volume Detector consists of a large three-dimensional array of photo-multiplier tubes. The first GVD-cluster has been deployed and commissioned in April 2015. The data acquisition system (DAQ) of the detector takes care of the digitization of the photo-multiplier tube signals, data transmission, filtering and storage. The design and the implementation of the data acquisition system are described.
Published: 2016
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30. TAIGA—A hybrid array for high-energy gamma astronomy and cosmic-ray physics

Author: A. A. Petrukhin, E. A. Osipova, A. V. Skurikhin, A. Grinyuk, E. A. Kravchenko, D. Chernykh, E. E. Korosteleva, A. Garmash, R. P. Kokoulin, Dmitry Zhurov, Pavel Bezyazeekov, R. R. Mirgazov, B. A. Tarashchansky, Dieter Horns, Evgeny Postnikov, M. Popesku, Y. Suvorkin, Martin Tluczykont, S. Kiryuhin, Razmik Mirzoyan, O. Fedorov, V.A. Tabolenko, Konstantin Ustinov, A. Pakhorukov, A. Borodin, Aleksey Zagorodnikov, A. Chiavassa, V. Prosin, Valery Zurbanov, Bayarto Lubsandorzhiev, M. Slunecka, Y. Kazarina, L. G. Sveshnikova, I. V. Yashin, V. S. Ptuskin, Yaroslav Sagan, A. Pushnin, R. D. Monkhoev, Victor Grebenyuk, T. I. Gress, Dmitriy Kostunin, O. A. Gress, V. A. Poleschuk, N. M. Budnev, A. Silaev junior, E.G. Popova, A. Pan, D. Voronin, V. A. Kozhin, E. V. Ryabov, I. I. Astapov, V. V. Kindin, L. Tkachev, Roman Raikin, V. Samoliga, Ralf Wischnewski, L. A. Kuzmichev, A. Porelli, A. N. Dyachok, O. G. Grishin, Grigory Rubtsov, N. N. Kalmykov, Ch. Spiering, N. B. Lubsandorzhiev, A. Vaidyanathan, N. Ushakov, L. V. Pankov, K. Komponiets, A. Ivanova, Mikhail Panasyuk, Aleksandr Gafarov, A. A. Silaev, Alexander Kryukov, A. Sidorenkov, M. Brückner, Anatoly Lagutin, and A. Sokolov
Subjects: Physics, Nuclear and High Energy Physics, High energy, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, 7. Clean energy, 01 natural sciences, Observatory, Hybrid array, 0103 physical sciences, 010306 general physics, Instrumentation, Cherenkov radiation
Abstract: The combination of a wide angle timing Cherenkov array and Imaging Atmospheric Cherenkov Telescopes operated in mono mode offers a cost-effective way to construct a few square kilometers array for ultrahigh-energy gamma astronomy. The first stage of the TAIGA Observatory (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) is described here. It will comprise TAIGA-HiSCORE - 120 wide angle Cherenkov stations distributed over an area of 1.0 km2 and three IACTs (TAIGA-IACT).
Published: 2020
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31. Data acquisition system of the NT1000 Baikal neutrino telescope

Author: S. V. Fialkovskii, K.V. Golubkov, A. A. Perevalov, T. I. Gress, A. N. Dyachok, R. R. Mirgazov, N. M. Budnev, V. A. Kozhin, E. N. Pliskovskii, E. N. Konstantinov, A.V. Avrorin, A. V. Skurikhin, G. V. Domogatskii, E. V. Ryabov, M.B. Milenin, A.D. Avrorin, D.A. Kuleshov, F.K. Koshel, V. A. Poleshchuk, I. A. Belolaptikov, Konstantin Kebkal, B. A. Tarashchanskii, B. A. Shaibonov, Olga Suvorova, O. N. Gaponenko, L. V. Pankov, A. I. Lolenko, A. I. Panfilov, R. Bannasch, E. A. Osipova, K. V. Konishchev, O.G. Kebkal, V.B. Brudanin, V. I. Lyashuk, M.I. Rozanov, A.P. Koshechkin, V. A. Zhukov, A.V. Korobchenko, Sergey Yakovlev, A.A. Sheifler, V. M. Ainutdinov, Zdenek Hons, Aleksey Zagorodnikov, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, Valery Zurbanov, V. Yu. Rubtsov, A.A. Smagina, I. A. Danilchenko, D.Yu. Bogorodsky, Aleksandr Gafarov, and V.F. Kulepov
Subjects: Physics, Data acquisition, Neutrino detector, Neutrino telescope, Astronomy, Continuous exposure, Instrumentation
Abstract: In April of 2013, the first stage of the experimental cluster of the NT1000 deep-water neutrino telescope consisting of three strings with 24 optical modules in each was installed at Lake Baikal and switched on in the continuous exposure mode. The detection and data acquisition systems of this setup are described.
Published: 2014
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32. A hydroacoustic positioning system for the experimental cluster of the cubic-kilometer-scale neutrino telescope at Lake Baikal

Author: A. I. Panfilov, M.I. Rozanov, V. Karnaukhov, O. N. Gaponenko, A. A. Perevalov, D.A. Kuleshov, F.K. Koshel, I. A. Danilchenko, D. P. Petukhov, S. G. Yakovlev, A. V. Skurikhin, V. A. Poleschuk, A.V. Korobchenko, B.A. Tarashansky, V.F. Kulepov, D.Yu. Bogorodsky, V. I. Dobrynin, R. Bannasch, V. A. Kozhin, S.V. Fialkovsky, A. A. Doroshenko, A. G. Kebkal, B. A. Shaibonov, Zh.-A.M. Dzhilkibaev, T. I. Gress, A. A. Sheifler, A.V. Avrorin, E. A. Osipova, V. A. Zhukov, G.V. Domogatsky, Olga Suvorova, R. R. Mirgazov, M.B. Milenin, V. M. Aynutdinov, L. V. Pankov, E.N. Pliskovsky, A. M. Klabukov, K.V. Konischev, V.B. Brudanin, L. A. Kuzmichev, V. Yu. Rubtzov, A. N. Dyachok, E. V. Ryabov, I. A. Belolaptikov, Konstantin Kebkal, A.P. Koshechkin, Aleksandr Gafarov, A. V. Zagorodnikov, G. Pan'kov, Valery Zurbanov, V. I. Lyashuk, N. M. Budnev, and K.V. Golubkov
Subjects: Physics, Photomultiplier, Positioning system, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Scale (descriptive set theory), Field tests, law.invention, Telescope, Neutrino detector, law, Cluster (physics), Instrumentation, Remote sensing
Abstract: The NT1000 deep-water neutrino telescope with an effective volume of ∼2 km3 is currently being developed at Lake Baikal by the BAIKAL collaboration. The telescope will be composed of functionally independent setups—clusters of strings of optical modules based on photomultiplier tubes (with eight strings in each cluster). Since 2011, field tests of the basic elements and systems of the future telescope included in autonomous measuring complexes—prototypes of the NT1000 cluster—have been performed at Lake Baikal. The basic elements and the layout of one of the currently considered versions of the acoustic positioning system for the NT1000 telescope are described, and results of tests of the system prototype included as a component in the experimental cluster of the year 2012 are presented.
Published: 2013
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33. Asp-15—A stationary device for the measurement of the optical water properties at the NT200 neutrino telescope site

Author: V. Rubtzov, V. A. Poleschuk, K.V. Golubkov, O. G. Grishin, E. A. Osipova, R. R. Mirgazov, B.A. Tarashansky, I. A. Belolaptikov, V. I. Lyashuk, L. A. Kuzmichev, A. A. Perevalov, M.B. Milenin, T. I. Gress, A. A. Sheifler, A. Rastegin, D. Bogorodsky, A.D. Avrorin, V.F. Kulepov, E. V. Ryabov, I. A. Danilchenko, O. A. Gress, G.V. Domogatsky, S.V. Fialkovsky, A. Pan'kov, V. A. Zhukov, A.V. Korobchenko, V. M. Aynutdinov, E.N. Pliskovsky, B. Shoibonov, A. M. Klabukov, R. Wischnewski, A. I. Panfilov, M.I. Rozanov, A. V. Zagorodnikov, N. M. Budnev, D. P. Petukhov, O. N. Gaponenko, D.A. Kuleshov, F.K. Koshel, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, A.P. Koshechkin, V. Karnaukhov, K.V. Konischev, A. N. Dyachok, Ch. Spiering, Olga Suvorova, L. V. Pankov, and A. S. Yagunov
Subjects: Physics, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics, Solar neutrino problem, Computational physics, law.invention, Telescope, Neutrino detector, law, Measurements of neutrino speed, ddc:530, Neutrino astronomy, Neutrino, Neutrino oscillation, Instrumentation
Abstract: The operation of large underwater neutrino telescopes requires the precise knowledge of the water parameters governing light absorption and scattering, as well as a continuous monitoring of these parameters. For this purpose, a stationary underwater device, ASP-15, has been developed by the Baikal collaboration. We describe the basic assumptions and formulae behind ASP-15, the methods how absorption length, scattering length and phase functions are determined, the design of the device, and give some results obtained over many years of operation in conjuction with the Baikal telescope NT200.
Published: 2012
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34. Search for astrophysical neutrinos in the Baikal neutrino project

Author: M.B. Milenin, S. P. Mikheev, A.V. Avrorin, E. A. Osipova, O. A. Gress, A. Pan'kov, A. I. Panfilov, K.V. Golubkov, A.P. Koshechkin, M.I. Rozanov, V. I. Lyashuk, O. N. Gaponenko, Olga Suvorova, V. A. Zhukov, A. I. Klimov, N. M. Budnev, L. V. Pankov, R. Wisznewski, I. A. Belolaptikov, B. A. Shaibonov, R. R. Mirgazov, D. A. Petukhov, V. Yu. Rubtsov, A.V. Korobchenko, A. N. Shirokov, A. S. Yagunov, A. N. Dyachok, B. A. Tarashchanskii, D.A. Kuleshov, E.G. Popova, E. N. Pliskovskii, D. Yu. Bogorodskii, G. V. Domogatskii, S. I. Sinegovskii, S. V. Fialkovskii, A. M. Klabukov, A. A. Perevalov, L. A. Kuzmichev, O. G. Grishin, T. I. Gress, A. A. Sheifler, V. M. Ainutdinov, E. V. Ryabov, V. Poleshchuk, E. Middell, K. V. Konishchev, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, V. V. Prosin, Ch. Spiering, V.F. Kulepov, I. A. Danilchenko, and A. V. Zagorodnikov
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Radiation, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Astrophysics::Instrumentation and Methods for Astrophysics, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Cosmic neutrino background, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Radiology, Nuclear Medicine and imaging, Neutrino astronomy, Neutrino, Neutrino oscillation
Abstract: The currently running NT200 and NT200+ Baikal neutrino telescopes and the prospects for development of the Baikal Neutrino Project are briefly descr⇊ed. Preliminary results of the search for neutrino events correlated with cosmological gamma-ray bursts at the NT200 are presented. The feasibility of developing a method for acoustic detection of ultrahigh-energy neutrinos in the Baikal Neutrino Project is discussed. The calculation results for the energy spectrum and zenith-angle distributions of atmospheric neutrinos in the energy range from 10 to 107 GeV obtained within various high-energy hadron-nucleus interaction models are presented.
Published: 2011
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35. Monitoring of optical properties of water near the Baikal neutrino telescope with the use of a submerged device ASP-15: Methods and results

Author: R. R. Mirgazov, A. S. Yagunov, E. V. Ryabov, B. A. Tarashchanskii, and Grigorii P. Kokhanenko
Subjects: Physics, Atmospheric Science, Properties of water, Physics::Instrumentation and Detectors, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Continuous monitoring, Astrophysics::Instrumentation and Methods for Astrophysics, Oceanography, Laser, Atomic and Molecular Physics, and Optics, law.invention, chemistry.chemical_compound, Optics, chemistry, law, Recovery techniques, Photonics, business, Physics::Atmospheric and Oceanic Physics, Light field, Earth-Surface Processes
Abstract: Some spectral and angular dependences of optical parameters measured at different depths are presented. The submerged device ASP-15, designed for continuous monitoring of inherent optical properties of Baikal water in southern Lake Baikal near the Neutrino Telescope NT200+ at a depth of 1200 m, is described. Light field measurement and hydrooptical parameter recovery techniques are described.
Published: 2011
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36. Baikal neutrino project: history and prospects

Author: I. A. Portyanskaya, D. Yu. Bogorodskii, V.F. Kulepov, R. Vishnevskii, T. I. Gress, A. I. Panfilov, M.I. Rozanov, A. M. Klabukov, K. Shpiring, A. I. Klimov, E. Middell, L. V. Pankov, E. V. Ryabov, A. V. Shirokov, V. A. Zhukov, D. P. Petukhov, K.V. Golubkov, I. A. Belolaptikov, B. A. Tarashchanskii, O. N. Gaponenko, A.V. Avrorin, P. G. Pokhil, A.V. Korobchenko, Yu. A. Semenei, V. Yu. Rubtsov, A. A. Doroshenko, A. Pan'kov, Zh.-A.M. Dzhilkibaev, V. V. Prosin, S. I. Sinegovsky, V. M. Aynutdinov, V. Poleshchuk, N. M. Budnev, E. N. Pliskovskii, S. V. Fialkovskii, B. Shaibonov, Aleksey Zagorodnikov, R. R. Mirgazov, G. V. Domogatskii, I. A. Danilchenko, S. P. Mikheev, L. A. Kuzmichev, T. Mikolaiskii, K. V. Konishchev, A.P. Koshechkin, E. A. Osipova, M.B. Milenin, O. I. Grishin, O. A. Gress, A. P. D’yachok, V. A. Balkanov, and E.G. Popova
Subjects: Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Astronomy, Solar neutrino problem, Cosmic neutrino background, ddc:370, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino astronomy, Neutrino, Neutrino oscillation
Abstract: The history, current status, and prospects for the development of the Baikal Neutrino Project are considered. The main physical results obtained with the help of NT200 and NT200+ neutrino telescopes are presented.
Published: 2010
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37. Contact electrization of natural diamond crystals

Author: Yu. S. Mukhachev and E. V. Ryabov
Subjects: Materials science, Physics and Astronomy (miscellaneous), chemistry.chemical_element, Electric charge, Natural diamonds, Metal, chemistry, Aluminium, visual_art, visual_art.visual_art_medium, Relative humidity, Composite material, Diamond crystal, Triboelectric effect
Abstract: Recently, we proposed (1) to enrich diamondcon� taining ores using a triboelectrometric method for sep� arating natural diamonds. This method is based on detecting an electric charge that is acquired by dia� mond as a result of its electrization in contact with the surface of a metal vibrating wash pan. This Letter pre� sents the results of an investigation of the possible mechanisms of triboelectric charging of diamond crystals that occur repeatedly in contact with the metal surface. The triboelectric charge accumulated on natural diamond crystals in the course of their motion over the surface of an aluminum vibrating pan was measured under laboratory conditions (temperature, +20 °C; relative humidity, 60%) using a special setup intended for the investigation of triboelectric charging of miner� als. The experiments were performed with a laboratory collection of natural diamond crystals with dimen� sions ranging within 1-7 mm. The electric charge was measured with an error not exceeding 3%. An analysis of the results of measurements led to following con� clusions: (i) All natural diamond crystals in the series studied acquired a positive charge in the course of contact electrization on the surface of an aluminum vibrating pan.
Published: 2010
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38. Towards high energy neutrino acoustic detector in Lake Baikal: Current status and perspectives

Author: V.F. Kulepov, R. R. Mirgazov, M.B. Milenin, B. Shoibonov, T. I. Gress, E. V. Ryabov, A. V. Shirokov, V. I. Lyashuk, Olga Suvorova, I. A. Danilchenko, L. A. Kuzmichev, E. Middell, S. Mikheyev, E. A. Osipova, L. V. Pankov, A. Pan'kov, B.A. Tarashansky, V. M. Aynutdinov, Ch. Spiering, A.D. Avrorin, A.P. Koshechkin, V. A. Poleschuk, V. Rubtzov, A. A. Perevalov, G.V. Domogatsky, A. V. Zagorodnikov, A. N. Dyachok, D. Bogorodsky, S.V. Fialkovsky, K.V. Golubkov, V. A. Zhukov, I. A. Belolaptikov, E.N. Pliskovsky, A.V. Korobchenko, D.A. Kuleshov, A. M. Klabukov, I. I. Yashin, R. Wischnewski, A. I. Klimov, O. N. Gaponenko, N. M. Budnev, O. Grishin, A. S. Yagunov, A.A. Sheifler, D. P. Petukhov, K.V. Konischev, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, V. V. Prosin, A. I. Panfilov, M.I. Rozanov, I. A. Portyanskaya, V. Karnaukhov, Dmitriy Kostunin, O. A. Gress, and E. Popova
Subjects: Physics, High energy, Astrophysics::High Energy Astrophysical Phenomena, Acoustics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Acoustic sensor, Pulse (physics), law.invention, Nuclear physics, Telescope, Neutrino detector, law, Current (fluid), Neutrino
Abstract: We report on the current state of the Baikal acoustic neutrino detection project. The new results of pulse simulation are presented. The Askarian approach was exploited to calculate the acoustic pulses produced by ultra-high-energy (UHE) particles. Preliminary results of the telescope effective volume estimation are presented. It is described how new Acoustic Sensor Modules are put into operation.
Published: 2013
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39. Acoustic search for high-energy neutrinos in the Lake Baikal:Results and plans

Author: A. I. Panfilov, K.V. Konischev, A. A. Doroshenko, E. A. Osipova, Zh.-A.M. Dzhilkibaev, V. V. Prosin, M.I. Rozanov, V. Karnaukhov, A.D. Avrorin, E.G. Popova, G.V. Domogatsky, I. A. Portyanskaya, L. A. Kuzmichev, S. Mikheyev, A. I. Klimov, N. M. Budnev, D. P. Petukhov, A.P. Koshechkin, V. A. Poleschuk, Dmitriy Kostunin, O. A. Gress, I. V. Yashin, A. N. Dyachok, A. Pan'kov, B. Shoibonov, V. I. Lyashuk, D. Bogorodsky, K.V. Golubkov, B.A. Tarashansky, V. M. Aynutdinov, Ch. Spiering, A. S. Yagunov, R. Wischnewski, E. Middell, E.N. Pliskovsky, A. M. Klabukov, I. A. Belolaptikov, O. N. Gaponenko, V.F. Kulepov, A. A. Perevalov, A.V. Korobchenko, Olga Suvorova, L. V. Pankov, I. A. Danilchenko, D.A. Kuleshov, A. V. Zagorodnikov, M.B. Milenin, V. Rubtzov, S.V. Fialkovsky, V. A. Zhukov, A. Kochanov, R. R. Mirgazov, O. G. Grishin, T. I. Gress, A. A. Sheifler, E. V. Ryabov, and A. V. Shirokov
Subjects: Physics, Nuclear and High Energy Physics, High energy, COSMIC cancer database, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Acoustic sensor, Astronomy, Astrophysics, Computer Science::Sound, High Energy Physics::Experiment, ddc:530, Neutrino, Instrumentation
Abstract: We report the present status and perspectives of the feasibility study to detect cosmic neutrinos acoustically in the Lake Baikal. The results of background studies are presented. It was shown that most of the detected neutrino-like pulses come from the lake surface. This fact has been used in the project of an acoustic prototype detector that consists of compact Acoustic Sensor Modules with 4-channel antennas each, arranged above the Baikal Neutrino Telescope at shallow depths and “listening” the deep-water layers of the lake.
Published: 2012
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40. The Gigaton Volume Detector in Lake Baikal

Author: I. A. Belolaptikov, M.B. Milenin, B. Shoibonov, I. A. Danilchenko, K.V. Golubkov, V. A. Poleschuk, A. I. Panfilov, A. Pan'kov, A. A. Perevalov, M.I. Rozanov, A. N. Dyachok, V. I. Lyashuk, E. A. Osipova, Ch. Spiering, N. M. Budnev, T.I. Gres, D. P. Petukhov, V. M. Aynutdinov, O. G. Grishin, S.V. Fialkovsky, O. N. Gaponenko, V. A. Zhukov, V.F. Kulepov, A.D. Avrorin, E.G. Popova, Olga Suvorova, A. A. Sheifler, A. I. Klimov, G.V. Domogatsky, E.N. Pliskovsky, L. V. Pankov, O. Gres, A. M. Klabukov, A. Kochanov, R. R. Mirgazov, E. Middell, E. V. Ryabov, A. V. Shirokov, B.A. Tarashansky, S. F. Berezhnev, R. Wischnewski, A.P. Koshechkin, Aleksey Zagorodnikov, D. Bogorodsky, K.V. Konischev, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, V. V. Prosin, N. Grishin, G. Ermakov, A.V. Korobchenko, V. Rubtzov, D.A. Kuleshov, A. S. Yagunov, L. A. Kuzmichev, and S. Mikheyev
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Volume (computing), Astronomy, law.invention, Telescope, Observatory, law, ddc:530, Sensitivity (control systems), Neutrino, Nonlinear Sciences::Pattern Formation and Solitons, Instrumentation, Underwater acoustic communication
Abstract: The objective of the Baikal Project is the creation of a kilometer-scale high-energy neutrino observatory: the Gigaton Volume Detector (GVD) in Lake Baikal. Basic elements of the GVD – new optical modules, FADC readout units, and underwater communication systems – were investigated and tested in Lake Baikal with prototype strings in 2008–2010. We describe the results of prototype strings operation and review the preliminary design and expected sensitivity of the GVD telescope.
Published: 2011
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41. An experimental string of the NT1000 Baikal neutrino telescope

Author: A.P. Koshechkin, V.F. Kulepov, I. A. Belolaptikov, V. M. Aynutdinov, E.N. Pliskovsky, A. M. Klabukov, A. V. Zagorodnikov, L. A. Kuzmichev, A.V. Avrorin, A. N. Dyachok, O. G. Grishin, S. Mikheyev, T. I. Gress, A. A. Sheifler, I. A. Danilchenko, R. R. Mirgazov, A. S. Yagunov, D. P. Petukhov, E. A. Osipova, V. Yu. Rubtzov, E. V. Ryabov, K.V. Konischev, A. I. Klimov, A. V. Shirokov, M.B. Milenin, Ch. Spiering, A. I. Panfilov, K.V. Golubkov, G. Pan'kov, M.I. Rozanov, A. A. Doroshenko, B. A. Shaibonov, O. A. Gress, R. Wischnewski, Zh.-A.M. Dzhilkibaev, Olga Suvorova, V. V. Prosin, E.G. Popova, L. V. Pankov, G.V. Domogatsky, D.Yu. Bogorodsky, O. N. Gaponenko, V. I. Lyashuk, B.A. Tarashansky, A.V. Korobchenko, D.A. Kuleshov, S.V. Fialkovsky, V. A. Zhukov, V. A. Poleschuk, N. M. Budnev, A. A. Perevalov, and E. Middell
Subjects: Physics, Photomultiplier, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Field tests, Astrophysics, String (physics), law.invention, Telescope, law, ddc:620, Effective volume, Instrumentation
Abstract: A project of the NT1000 deep-water neutrino telescope with an effective volume of ∼1 km3 is currently being developed by the BAIKAL collaboration. The telescope will be located in Lake Baikal in close vicinity of the NT200+ detector, which is currently in operation. The telescope will be composed of 12 clusters with 8 similar strings of optical modules in each (each string has two sections of the NT1000 optical modules). The section of the NT1000 optical modules has been developed using higher-efficiency photomultiplier tubes and state-of-the-art electronics. The field tests of the experimental string consisting of two sections with six optical modules in each have been performed. The results of these investigations are used in the project of the NT1000 neutrino telescope and in the hydrological study of Lake Baikal.
Published: 2011
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42. Experience of developing x-ray radiators based on low-power tubes with through-type target

Author: S. Y. Borzenko, B. I. Kitov, E. V. Ryabov, and Yu. S. Mukhachyov
Subjects: Physics, Air cooling, Optical isolator, business.industry, Optical engineering, Amplifier, Transistor, Electrical engineering, Radiation, law.invention, Optics, law, Tube (fluid conveyance), business, Transformer
Abstract: The experience of constructing lowpower sources of X-ray radiation based on tubes with through-type target and air cooling. A number of problems arising when developing the source for feeding the circuit of the X-ray tube target are considered.© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Published: 2005
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43. Using small section x-ray radiation in roentgen-radiometric separation of ores

Author: E. M. Shlufman, B. I. Kitov, S. Y. Borzenko, E. V. Ryabov, and Yu. S. Mukhachyov
Subjects: Physics, business.industry, Optical engineering, Separation (aeronautics), X-ray, Roentgen, Radiation, symbols.namesake, Optics, Section (archaeology), symbols, Radiometric dating, business, Intensity (heat transfer)
Abstract: The paper offers a new way of roentgen-radiometric separation of lump material. The technique is based on measuring the intensity of X-ray radiation scattered by particles at small angle. The measurement is done in free fall of the particles of compound substance through the radiation zone.© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Published: 2005
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44. FACTORS OF SUSTAINABLE GROWTH OF RUSSIAN COMPANIES

Author: E. V. Ryabova and M. A. Samodelkina
Subjects: sustainable growth, models of sustainable growth, growth factors, growth in sales, non-financial indicators, Finance, HG1-9999
Abstract: Topic. The article discusses the growth of the Russian companies, which became today for many of them a priority. The growth of the company is associated with many challenges. Thus it is required to assess many factors that influence company’s growth. However, until now, we have not a unified approach regarding the content of the term “company’s growth”, nor the defining factors of growth. Therefore, it is possible to highlight two outstanding issues in this area. The first is the choice of the indicator, characterizing the growth of the company. The second is the study of the factors that can have sustainable impact on growth. These are the questions we try to answer in this study. The real and sustainable growth of the companies acts in this study as subjects on the example of the 112 largest Russian companies on the Forbes list.Methods. As research methods we used general scientific methods (analysis, synthesis, comparison, graphics), and special ones (statistical analysis methods, the coefficient method).Results. We proved in this study that the composition and the degree of influence of financial and non-financial factors on the real and sustainable growth of the company are different. The financing structure for large companies is not significant factor. Therefore, it not matter what kind of resources the company uses for the growth of its business. The presence of the Board of Directors is an essential condition for the effectiveness of the current activities that impact on actual sales growth. In the strategic plan, the sustainable growth is due to the presence of independent members in the Board of Directors. Investments in long-term assets demonstrated their importance, with a certain time lag, for both the real growth and sustainability of the company.Implementation of the results. The proposed method can be useful for both external and internal analysts developing investment and financial management decisions.
Published: 2018
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