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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. Prompt atmospheric neutrinos in the quark–gluon string model

Author

S. I. Sinegovsky and M. N. Sorokovikov

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract We calculate the atmospheric flux of prompt neutrinos, produced in decays of the charmed particles at energies beyond 1 TeV. Cross sections of the D mesons and $${\Lambda }^{+}_{c}$$ Λc+ baryons production in pA and $$\pi A$$ πA collisions are calculated in the phenomenological quark–gluon string model (QGSM) which is updated using recent measurements of cross sections of the charmed meson production in the LHC experiments. A new estimate of the prompt atmospheric neutrino flux is obtained and compared with the limit from the IceCube experiment, and with predictions of other charm production models.

Published
2020
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5. 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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6. 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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7. 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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8. 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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9. 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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10. 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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11. 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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12. 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

13. Production of Charmed Particles in the Quark-Gluon String Model and Estimate of Their Contributions to Atmospheric Neutrino Fluxes

Author

M. N. Sorokovikov and S. I. Sinegovsky

Subjects
Quark, Physics, Particle physics, Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, 01 natural sciences, String (physics), Gluon, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Charm (quantum number), Ultra-high-energy cosmic ray, Neutrino, Nuclear Experiment, 010306 general physics
Abstract

An estimate of the flux of prompt atmospheric neutrinos produced in decays of charmed particles is obtained. Cross sections of the production of charmed particles (D, Λ c ) in pA and πA collisions are calculated in the quark-gluon string model (QGSM) for the energy range 1 TeV – 100 PeV. New data on the cross sections of charmed meson production at high energies, obtained in experiments at the Large Hadron Collider, make it possible to refine the values of the free parameters of the QGSM and obtain a preliminary estimate of the prompt atmospheric neutrino flux. A comparison is made with the results of other neutrino flux calculations carried out for other charm production models – the dipole model and SIBYLL 2.3rc1.

Published
2017
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14. Simulation of structure formation of austenitic steel weld

Author

M S Tsyganova, V. A. Chaika, M M Mustafin, L. A. Savina, A G Ivashko, V. V. Savin, A M Kalikulov, and M N Sorokovikov

Subjects
Austenite, Structure formation, Materials science, law, Phase (matter), Metallurgy, engineering, Welding, Austenitic stainless steel, engineering.material, Residual, law.invention
Abstract

An integrated model of phase transformations is proposed, which unites the model of changes in the temperature fields of the workpiece during welding and subsequent cooling, as well as a simulation model of phase transformations that occur during cooling of the steel. The developed method allows predicting the amount of residual δ-ferrite in the structure of the weld of austenitic stainless steel, which is necessary to justify the welding conditions.

Published
2019
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