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1. Experimental Complex TAIGA

Author

N. Ushakov, N. B. Lubsandorzhiev, E. A. Kravchenko, Yu. Lemeshev, D. Chernykh, E. E. Korosteleva, Anatoly Lagutin, L. V. Pankov, A. Garmash, R. P. Kokoulin, A. V. Skurikhin, P. Volchugov, Andrey Sokolov, V. V. Prosin, D. A. Podgrudkov, A. L. Pakhorukov, Dmitry Chernov, M. Blank, A. Tanaev, L. G. Sveshnikova, L. G. Tkachev, E. A. Osipova, M. Slunechka, V.A. Tabolenko, Dieter Horns, M. Tluczykont, R. D. Monkhoev, I. I. Astapov, E. Popova, A. Chiavassa, A. Pushnin, M. Ternovoy, I. I. Yashin, A. N. Dyachok, Grigory Rubtsov, P. Bezyazykov, N. N. Kalmykov, D. Shipilov, M. Popesku, A. A. Petrukhin, A. Ivanova, Alexander Kryukov, Y. Sagan, A. Sidorenkov, Evgenii V Rjabov, V. Poleshchuk, D. Voronin, V. S. Ptuskin, Roman Raikin, B. A. Tarashchansky, Mikhail Panasyuk, O. A. Gress, V. Kiryukhin, A. Bulan, A. A. Grinyuk, V. A. Kozhin, V. V. Kindin, T. I. Gress, M. Brückner, R. R. Mirgazov, A. Pan, V. Samoliga, A. Vaidyanathan, Y. Kazarina, Oleg Fedorov, Dmitry Zhurov, A. Borodin, R. Mirzoyan, A. Porelli, A. Bonvech, K. G. Kompaniets, O. Grishin, Evgeny Postnikov, Aleksandr Gafarov, A. A. Silaev, A. V. Zagorodnikov, Bayarto Lubsandorzhiev, Y. Suvorkin, L. A. Kuzmichev, V. M. Grebenyuk, and R. Wischnewski

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Taiga, Astronomy, 010306 general physics, 01 natural sciences, Atomic and Molecular Physics, and Optics, Cherenkov radiation
Abstract

The astrophysical complex TAIGA (Tunka Advanced Instrument for cosmic-ray physics and Gamma-ray Astronomy), whose first phase is being completed in the Tunka valley 50 km from Lake Baikal, is described. Its research program, first results, and development prospects are discussed.

Published
2020

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

Author

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

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

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

Published
2019

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

Author

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

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

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

Published
2019

4. Background identification algorithm for future self-triggered air-shower radio arrays

Author

Dmitriy Kostunin, Y. Kazarina, Oleg Fedorov, S. Malakhov, Pavel Bezyazeekov, and Vladimir Lenok

Subjects
010308 nuclear & particles physics, Computer science, Astrophysics::High Energy Astrophysical Phenomena, Detector, FOS: Physical sciences, Cosmic ray, 01 natural sciences, Electromagnetic radiation, Electromagnetic interference, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Air shower, Duty cycle, 0103 physical sciences, Broadband, Electronic engineering, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Mathematical Physics, Energy (signal processing)
Abstract

The study of the ultra-high energy cosmic rays, neutrinos and gamma rays is one of the most important challenges in astrophysics. The low fluxes of these particles do not allow one to detect them directly. The detection is performed by the measuring of the air-showers produced by the primary particles in the Earth's atmosphere. A radio detection of ultra-high energy air-showers is a cost-effective technique that provides a precise reconstruction of the parameters of primary particle and almost full duty cycle in comparison with other methods. The main challenge of the modern radio detectors is the development of efficient self-trigger technology, resistant to high-level background and radio frequency interference. Most of the modern radio detectors receive trigger generated by either particle or optical detectors. The development of the self trigger for the radio detector will significantly simplify the operation of existing instruments and allow one to access the main advantages of the radio method as well as open the way to the construction of the next generation of large-scale radio detectors. In the present work we discuss our progress in the solution of this problem, particularly the classification of broadband pulses., Comment: 6 pages, 1 figure

Published
2020
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5. 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

6. 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

7. The Search for Diffuse Gamma Rays Using Data from the Tunka-Grande Experiment

Author

S. Kiryuhin, Valery Zurbanov, O. A. Gress, Aleksandr Gafarov, A. Pushnin, A. Chiavassa, V. Prosin, V. A. Kozhin, A. A. Silaev, E. A. Osipova, D. M. Voronin, A. Pakhorukov, R. D. Monkhoev, T. I. Gress, V. A. Poleschuk, Mikhail Panasyuk, R. R. Mirgazov, A. V. Skurikhin, Bayarto Lubsandorzhiev, L. G. Sveshnikova, N. B. Lubsandorzhiev, L. A. Kuzmichev, V. S. Ptuskin, E.G. Popova, Aleksey Zagorodnikov, V.A. Tabolenko, E. E. Korosteleva, N. N. Kalmykov, V. P. Sulakov, Yu. A. Semeney, C. Spiering, A. N. Dyachok, Y. Kazarina, N. M. Budnev, and L. V. Pankov

Subjects
010302 applied physics, Physics, Range (particle radiation), 010308 nuclear & particles physics, 0103 physical sciences, Hadron, Energy spectrum, Gamma ray, General Physics and Astronomy, Cosmic ray, Astrophysics, Mass composition, 01 natural sciences
Abstract

The Tunka-Grande array is part of an experimental complex located in the Tunka Valley (Republic of Buryatia, Russia) about 50 km from Lake Baikal. This complex also contains the Tunka-133 and Tunka-Rex arrays. The aim of this complex is to study the primary cosmic ray energy spectrum and mass composition in the energy range of 1016–1018 eV, and to search for diffuse gamma rays in the energy range of 5 × 1016–5 × 1017 eV. The design of the Tunka-Grande array and the procedure for reconstructing the parameters of extensive air showers (EASes) are described, and preliminary results are presented from the search for diffuse gamma rays with energies of more than 5 × 1016 eV.

Published
2019

8. First analysis of inclined air showers detected by Tunka-Rex

Author

R. R. Mirgazov, V. V. Prosin, A. Pakhorukov, V. Lenok, Frank G. Schröder, T. Marshalkina, E. A. Osipova, Aleksey Zagorodnikov, R. D. Monkhoev, Pavel Bezyazeekov, R. Hiller, Andreas Haungs, Dmitriy Kostunin, Matthias Kleifges, O. A. Gress, L. V. Pankov, L. A. Kuzmichev, Tim Huege, E. E. Korosteleva, O. Fedorov, N. B. Lubsandorzhiev, D. Chernykh, N. M. Budnev, D. Shipilov, and Y. Kazarina

Subjects
Physics, 010308 nuclear & particles physics, business.industry, Frequency band, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Cosmic ray, 01 natural sciences, Magnetic field, Antenna array, Optics, 0103 physical sciences, Physics::Accelerator Physics, ddc:530, 010306 general physics, business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Zenith
Abstract

The Tunka Radio Extension (Tunka-Rex) is a digital antenna array for the detection of radio emission from cosmic-ray air showers in the frequency band of 30 to 80 MHz and for primary energies above 100 PeV. The standard analysis of Tunka-Rex includes events with zenith angle of up to 50$^\circ$. This cut is determined by the efficiency of the external trigger. However, due to the air-shower footprint increasing with zenith angle and due to the more efficient generation of radio emission (the magnetic field in the Tunka valley is almost vertical), there are a number of ultra-high-energy inclined events detected by Tunka-Rex. In this work we present a first analysis of a subset of inclined events detected by Tunka-Rex. We estimate the energies of the selected events and test the efficiency of Tunka-Rex antennas for detection of inclined air showers., ARENA2018 proceedings

Published
2019
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9. The Tunka-Grande experiment: Status and prospects

Author

N. M. Budnev, R. D. Monkhoev, T. I. Gress, S. Kiryuhin, Aleksandr Gafarov, Evgeny Postnikov, Y. Kazarina, A. A. Silaev, C. Spiering, E. A. Osipova, D. M. Voronin, Yu. A. Fomin, A. N. Dyachok, A. Chiavassa, V. Prosin, V. V. Lenok, Bayarto Lubsandorzhiev, N. B. Lubsandorzhiev, Aleksey Zagorodnikov, V.A. Tabolenko, O. G. Grishin, L. G. Sveshnikova, V. S. Ptuskin, A. Pushnin, Valery Zurbanov, A. V. Skurikhin, E.G. Popova, V. Samoliga, E. E. Korosteleva, A. Pakhorukov, V. P. Sulakov, O. A. Gress, Yu. A. Semeney, A. Ivanova, V. A. Kozhin, R. R. Mirgazov, Oleg Fedorov, V. A. Poleschuk, L. A. Kuzmichev, S. N. Epimakhov, Dmitry Zhurov, N. N. Kalmykov, L. V. Pankov, R. Mirzoyan, and Mikhail Panasyuk

Subjects
Physics, Scintillation, Range (particle radiation), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Cosmic ray, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, Scintillation counter, 010306 general physics, Cherenkov radiation, Radio wave
Abstract

The Tunka-Grande scintillation array is described. The first results from its operation are presented. The prospects for studying primary cosmic rays in the energy range of 1016 to 1018 eV during simultaneous registration of the Cherenkov and charged particle components along with radio emissions from extensive air showers are discussed.

Published
2017

10. TAIGA—an advanced hybrid detector complex for astroparticle physics and high energy gamma-ray astronomy in the Tunka valley

Author

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

Subjects
Astroparticle physics, Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Physics beyond the Standard Model, High Energy Physics::Phenomenology, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Elementary particle, Gamma-ray astronomy, 01 natural sciences, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Observatory, 0103 physical sciences, Instrumentation, Axion, Mathematical Physics
Abstract

The TAIGA observatory addresses ground-based gamma-ray astronomy at energies from a few TeV to several PeV, cosmic ray physics from 100 TeV to several EeV as well as for search for axion-like particles, Lorentz violations and another evidence of New Physics. In 2020 year a one square kilometer TAIGA setup should be put in operation.

Published
2020

11. 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

12. TAIGA - a hybrid array for high energy gamma astronomy and cosmic ray physics

Author

N. Budnev, I. Astapov, P. Bezyazeekov, V. Boreyko, A. Borodin, M. Brueckner, A. Chiavassa, A. Dyachok, O. Fedorov, A. Gafarov, A. Garmash, N. Gorbunov, V. Grebenyuk, O. Gress, T. Gress, O. Grishin, A. Grinyuk, A. Haungs, R. Hiller, D. Horns, T. Huege, N. Kalmykov, Y. Kazarina, V. Kindin, S. Kiryuhin, P. Kirilenko, M. Kleifges, R. Kokoulin, K. Kompaniets, E. Korosteleva, D. Kostunin, V. Kozhin, E. Kravchenko, L. Kuzmichev, Yu. Lemeshev, V. Lenok, B. Lubsandorzhiev, N. Lubsandorzhiev, R. Mirgazov, R. Mirzoyan, R. Monkhoev, E. Osipova, A. Pakhorukov, M. Panasyuk, L. Pankov, A. Petrukhin, V. Poleschuk, M. Popescu, E. Popova, A. Porelli, E. Postnikov, V. Prosin, V. Ptuskin, E. Rjabov, G. Rubtsov, A. Pushnin, Y. Sagan, B. Sabirov, V. Samoliga, F. Schröder, Yu. Semeney, A. Silaev, A. Sidorenkov, A. Skurikhin, V. Slunecka, A. Sokolov, C. Spiering, L. Sveshnikova, V. Tabolenko, B. Tarashansky, A. Tkachenko, L. Tkachev, M. Tluczykont, R. Wischnewski, A. Zagorodnikov, D. Zhurov, V. Zurbanov, and I. Yashin

Subjects
Physics, Range (particle radiation), High energy, 010308 nuclear & particles physics, QC1-999, Taiga, Detector, Gamma ray, Astronomy, Cosmic ray, 01 natural sciences, Galaxy, Hybrid array, 0103 physical sciences, ddc:530, 010303 astronomy & astrophysics
Abstract

The physics motivations and advantages of the new TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) detector are presented. TAIGA aims at gamma-ray astronomy at energies from a few TeV to several PeV, as well as cosmic ray physics from 100 TeV to several EeV. For the energy range 30 – 200 TeV the sensitivity of 10 km2 area TAIGA array for the detection of local sources is expected to be 5 × 10-14 erg cm-2 sec-1 for 300 h of observations. Reconstruction of the given EAS energy, incoming direction and its core position, based on the timing TAIGA-HiSCORE data, allows one to increase a distance between the IACTs up to 600-1000 m. The low investments together with the high sensitivity for energies ≥ 30-50 TeV make this pioneering technique very attractive for exploring the galactic PeVatrons and cosmic rays. At present the TAIGA first stage has been constructed in Tunka valley, 50 km West from the Lake Baikal. The first experimental results of the TAIGA first stage are presented.

Published
2018

13. The TAIGA timing array HiSCORE - first results

Author

M. Tluczykont, N. Budnev, I. Astapov, N. Barbashina, A. Bogdanov, V. Boreyko, M. Brückner, A. Chiavassa, O. Chvalaev, O. Gress, T. Gress, O. Grishin, A. Dyachok, S. Epimakhov, O. Fedorov, A. Gafarov, N. Gorbunov, V. Grebenyuk, A. Grinuk, D. Horns, A. Kalinin, N. Karpov, N. Kalmykov, Y. Kazarina, S. Kiryuhin, R. Kokoulin, K. Kompaniets, A. Konstantinov, E. Korosteleva, V. Kozhin, E. Kravchenko, M. Kunnas, L. Kuzmichev, Yu. Lemeshev, B. Lubsandorzhiev, N. Lubsandorzhiev, R. Mirgazov, R. Mirzoyan, R. Monkhoev, R. Nachtigall, E. Osipova, A. Pakhorukov, M. Panasyuk, L. Pankov, A. Petrukhin, V. Poleschuk, E. Popova, A. Porelli, E. Postnikov, V. Prosin, V. Ptuskin, G. Rubtsov, A. Pushnin, V. Samoliga, P. Satunin, Yu. Semeney, A. Silaev, A. Skurikhin, M. Slunecka, A. Sokolov, C. Spiering, L. Sveshnikova, V. Tabolenko, B. Tarashansky, A. Tkachenko, L. Tkachev, D. Voronin, R. Wischnewski, A. Zagorodnikov, V. Zurbanov, D. Zhurov, and I. Yashin

Subjects
Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Detector, Taiga, Gamma ray, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Astrophysics, 01 natural sciences, Air shower, Sampling (signal processing), 0103 physical sciences, 010303 astronomy & astrophysics, Cherenkov radiation, Remote sensing
Abstract

Observations of gamma rays up to several 100 TeV are particularly important to spectrally resolve the cutoff regime of the long-sought Pevatrons, the cosmic-ray PeV accelerators. One component of the TAIGA hybrid detector is the TAIGA-HiSCORE timing array, which currently consists of 28 wide angle (0.6 sr) air Cherenkov timing stations distributed on an area of 0.25 km2 . The HiSCORE concept is based on (non-imaging) air shower front sampling with Cherenkov light. First results are presented.

Published
2017

14. The TAIGA experiment: From cosmic-ray to gamma-ray astronomy in the Tunka valley

Author

A. Haungs, N. B. Lubsandorzhiev, V. Samoliga, Grigory Rubtsov, N. N. Kalmykov, M. Brückner, A Saunkin, E. A. Osipova, D. Voronin, E.G. Popova, Pavel Bezyazeekov, V. Boreyko, O. G. Grishin, R. Hiller, B. K. Lubsandorzhiev, V. A. Poleschuk, A. N. Dyachok, N. V. Gorbunov, N Kirichkov, E. A. Kravchenko, L. Sveshnikova, E. E. Korosteleva, M. Kunnas, N. Karpov, E. Rybov, A. Pakhorukov, R. P. Kokoulin, R. D. Monkhoev, T. I. Gress, E. Fedoseev, A. V. Tkachenko, A. G. Bogdanov, R. Mirzoyan, A. Pushnin, Aleksandr Gafarov, M. Kleifges, R. R. Mirgazov, V.A. Tabolenko, A. Ivanova, Evgeny Postnikov, N. S. Barbashina, V Platonov, A. A. Silaev, A. V. Zagorodnikov, Oleg Fedorov, Y. Kazarina, K. O. Yurin, L. V. Pankov, A. A. Grinyuk, I. I. Astapov, Dmitriy Kostunin, O. A. Gress, V. Zirakashvili, B. A. Tarashchansky, V. A. Kozhin, O. Chvalaev, S.G. Pivovarov, Yu. A. Tikhonov, V. S. Ptuskin, F.G. Schröder, M. Tluczykont, R. Wischnewski, T. Huege, C. Spiering, Andrey Sokolov, N. M. Budnev, I. I. Yashin, A. Barnyakov, Valery Zurbanov, L. G. Tkachev, K. G. Kompaniets, Yu. A. Semeney, V. V. Lenok, A. Porelli, P. Kirilenko, A. V. Skurikhin, L. A. Kuzmichev, V. M. Grebenyuk, R. Nachtigall, Dieter Horns, A. Chiavassa, A. A. Perevalov, A. A. Petrukhin, S. Epimakhov, S. Kiryuhin, V. V. Prosin, and M. I. Panasyuk

Subjects
Nuclear and High Energy Physics, TAIGA, Physics::Instrumentation and Detectors, Cherenkov detector, Astrophysics::High Energy Astrophysical Phenomena, Cosmic ray, IACT, Astrophysics, 01 natural sciences, law.invention, Observatory, law, 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation, Cherenkov radiation, Physics, Muon, Gamma astronomy, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Astronomy, Gamma-ray astronomy
Abstract

We present physical motivations and advantages of the new gamma-observatory TAIGA (Tunka Advanced Instrument for cosmic ray physics and gamma-ray astronomy). TAIGA will be located in the Tunka valley, 50 km to the west of Lake Baikal, at the same place as the integrating air Cherenkov detector for cosmic rays Tunka-133. The TAIGA array is a complex, hybrid detector for ground-based gamma-ray astronomy for energies from a few TeV to several PeV as well as for cosmic ray studies from 100 TeV to several EeV. The array will consist of a wide angle Cherenkov array – TAIGA-HiSCORE with 5km2 area, a net of 16 IACT telescopes (with FOV of about 9.72°×9.72°) as well as muon and other detectors. We present the current status of the array construction.

Published
2017

15. Signal recognition and background suppression by matched filters and neural networks for Tunka-Rex

Author

E. E. Korosteleva, N. B. Lubsandorzhiev, D. Chernykh, Frank G. Schröder, E. A. Osipova, O. Fedorov, Pavel Bezyazeekov, V. V. Prosin, R. Hiller, T. Marshalkina, Dmitriy Kostunin, O. A. Gress, L. V. Pankov, N. M. Budnev, R. D. Monkhoev, Tim Huege, Y. Kazarina, Andreas Haungs, A. Pakhorukov, V. Lenok, Matthias Kleifges, D. Shipilov, L. A. Kuzmichev, and Aleksey Zagorodnikov

Subjects
Signal Processing (eess.SP), FOS: Computer and information sciences, Computer Science - Machine Learning, Computer science, QC1-999, FOS: Physical sciences, 01 natural sciences, Signal, Machine Learning (cs.LG), Antenna array, 0103 physical sciences, FOS: Electrical engineering, electronic engineering, information engineering, Detection theory, Electrical Engineering and Systems Science - Signal Processing, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010308 nuclear & particles physics, Signal reconstruction, business.industry, Noise (signal processing), Physics, Matched filter, Pattern recognition, White noise, Autoencoder, Artificial intelligence, Astrophysics - Instrumentation and Methods for Astrophysics, business
Abstract

The Tunka Radio Extension (Tunka-Rex) is a digital antenna array, which measures the radio emission of the cosmic-ray air-showers in the frequency band of 30-80 MHz. Tunka-Rex is co-located with TAIGA experiment in Siberia and consists of 63 antennas, 57 of them are in a densely instrumented area of about 1 km\textsuperscript{2}. In the present work we discuss the improvements of the signal reconstruction applied for the Tunka-Rex. At the first stage we implemented matched filtering using averaged signals as template. The simulation study has shown that matched filtering allows one to decrease the threshold of signal detection and increase its purity. However, the maximum performance of matched filtering is achievable only in case of white noise, while in reality the noise is not fully random due to different reasons. To recognize hidden features of the noise and treat them, we decided to use convolutional neural network with autoencoder architecture. Taking the recorded trace as an input, the autoencoder returns denoised trace, i.e. removes all signal-unrelated amplitudes. We present the comparison between standard method of signal reconstruction, matched filtering and autoencoder, and discuss the prospects of application of neural networks for lowering the threshold of digital antenna arrays for cosmic-ray detection., Comment: ARENA2018 proceedings

Published
2019

16. The Tunka radio extension (Tunka-Rex): Radio measurements of cosmic rays in Siberia

Author

Pavel Bezyazeekov, A. Haungs, N. B. Lubsandorzhiev, R. Hiller, Dmitriy Kostunin, O. A. Gress, E. E. Korosteleva, Y. Kazarina, V. V. Prosin, M. Kleifges, F.G. Schröder, R. Wischnewski, Grigory Rubtsov, L. A. Kuzmichev, N. M. Budnev, R. D. Monkhoev, R. R. Mirgazov, A. L. Pakhorukov, E. N. Konstantinov, A. V. Zagorodnikov, T. Huege, L. V. Pankov, and O. Krömer

Subjects
Nuclear and High Energy Physics, Photomultiplier, air, Cosmic ray, primary [cosmic radiation], Baikal, Scintillator, 01 natural sciences, Extension (metaphysics), Observatory, 0103 physical sciences, site, ddc:530, Cherenkov, 010303 astronomy & astrophysics, Instrumentation, Cherenkov radiation, scintillation counter, Physics, radio wave, photomultiplier, 010308 nuclear & particles physics, Detector, Astronomy, showers, observatory, statistics, Radio detection
Abstract

The Tunka observatory is located close to Lake Baikal in Siberia, Russia. Its main detector, Tunka-133, is an array of photomultipliers measuring Cherenkov light of air showers initiated by cosmic rays in the energy range of approximately 10 16 − 10 18 eV . In the last years, several extensions have been built at the Tunka site, e.g., a scintillator array named Tunka-Grande, a sophisticated air-Cherenkov-detector prototype named HiSCORE, and the radio extension Tunka-Rex. Tunka-Rex started operation in October 2012 and currently features 44 antennas distributed over an area of about 3 km 2 , which measure the radio emission of the same air showers detected by Tunka-133 and Tunka-Grande. Tunka-Rex is a technological demonstrator that the radio technique can provide an economic extension of existing air-shower arrays. The main scientific goal is the cross-calibration with the air-Cherenkov measurements. By this cross-calibration, the precision for the reconstruction of the energy and mass of the primary cosmic-ray particles can be determined. Finally, Tunka-Rex can be used for cosmic-ray physics at energies close to 1 EeV, where the standard Tunka-133 analysis is limited by statistics. In contrast to the air-Cherenkov measurements, radio measurements are not limited to dark, clear nights and can provide an order of magnitude larger exposure.

Published
2016

17. TAIGA experiment: present status and perspectives

Author

A. Chiavassa, V. Prosin, A. N. Dyachok, Aleksey Zagorodnikov, K. G. Kompaniets, M. Slunecka, V. Samoliga, Ch. Spiering, Aleksandr Gafarov, Grigory Rubtsov, N. N. Kalmykov, A. A. Petrukhin, A. A. Silaev, A. V. Tkachenko, R. D. Monkhoev, T. I. Gress, Martin Tluczykont, A. V. Skurikhin, R. Nachtigall, E.G. Popova, V. A. Poleschuk, R. R. Mirgazov, Evgenii V Rjabov, V.A. Tabolenko, Yu. Lemeshev, Oleg Fedorov, A. Ivanova, L. G. Sveshnikova, L. Tkachev, T. Huege, B.A. Tarashansky, S. Kiryuhin, A. Borodin, A. Pakhorukov, Evgeny Postnikov, Dieter Horns, L. V. Pankov, A. Grinyuk, I. I. Astapov, F.G. Schröder, E. A. Kravchenko, M. Brückner, E. E. Korosteleva, Bayarto Lubsandorzhiev, R. P. Kokoulin, Ralf Wischnewski, Razmik Mirzoyan, E. A. Osipova, L. A. Kuzmichev, V. V. Lenok, Valery Zurbanov, A. Porelli, Pavel Bezyazeekov, O. G. Grishin, A. Sidorenkov, V. Boreyko, Yu. Semeney, Dmitry Zhurov, M. Popesku, V. S. Ptuskin, Mikhail Panasyuk, Dmitriy Kostunin, O. A. Gress, V. A. Kozhin, V. V. Kindin, A. Haungs, N. B. Lubsandorzhiev, A. Pushnin, M. Kunnas, Victor Grebenyuk, Y. Kazarina, Andrey Sokolov, N. M. Budnev, Y. Sagan, and I. V. Yashin

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Taiga, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Measure (physics), Astronomy, Cosmic ray, Electron, 01 natural sciences, Observatory, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Instrumentation, Mathematical Physics, Cherenkov radiation
Abstract

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 . TAIGA will be located in the Tunka valley, ~ 50 km West from Lake Baikal. The different detectors of the TAIGA will be grouped in 6 arrays to measure Cherenkov and radio emission as well as electron and muon components of atmospheric showers. The combination of the wide angle Cherenkov detectors of the TAIGA-HiSCORE array and the 4-m Imaging Atmospheric Cherenkov Telescopes of the TAIGA-IACT array with their FoV of 10×10 degrees and underground muon detectors offers a very cost effective way to construct a 5 km2 array for gamma-ray astronomy.

Published
2017

18. The TAIGA experiment: from cosmic ray to gamma-ray astronomy in the Tunka valley

Author

N Budnev, I Astapov, P Bezyazeekov, A Bogdanov, V Boreyko, M Büker, M Brückner, A Chiavassa, O Chvalaev, O Gress, T Gress, O Grishin, A Dyachok, S Epimakhov, O Fedorov, A Gafarov, N Gorbunov, V Grebenyuk, A Grinuk, A Haungs, R Hiller, D Horns, T Huege, A Ivanova, A Kalinin, N Karpov, N Kalmykov, Y Kazarina, N Kirichkov, S Kiryuhin, M Kleifges, R Kokoulin, K Komponiest, A Konstantinov, E Korosteleva, D Kostunin, V Kozhin, O Krömer, M Kunnas, L Kuzmichev, V Lenok, B Lubsandorzhiev, N Lubsandorzhiev, R Mirgazov, R Mirzoyan, R Monkhoev, R Nachtigall, A Pakhorukov, M Panasyuk, L Pankov, A Perevalov, A Petrukhin, V Platonov, V Poleschuk, E Popova, A Porelli, V Prosin, V Ptuskin, G Rubtsov, A Pushnin, V Samoliga, P Satunin, F Schröder, Yu Semeney, A Silaev, A Skurikhin, V Slucka, C Spiering, L Sveshnikova, V Tabolenko, B Tarashansky, A Tkachenko, L Tkachev, M Tluczykont, D Voronin, R Wischnewski, A Zagorodnikov, V Zurbanov, and I Yashin

Subjects
Physics, History, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Taiga, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Astrophysics, Gamma-ray astronomy, 01 natural sciences, Computer Science Applications, Education, 0103 physical sciences, High Energy Physics::Experiment, ddc:620, 010306 general physics, Engineering & allied operations, Cherenkov radiation, Muon detector, Lepton
Abstract

The physical motivations and advantages of the new gamma-observatory TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) is presented. The TAIGA array is a complex, hybrid detector for ground-based gamma-ray astronomy for energies from a few TeV to several PeV as well as for cosmic ray studies from 100 TeV to several EeV. The TAIGA will include the wide angle Cherenkov array TAIGA-HiSCORE with ~5 km$^{2}$ area, a net of 16 IACT telescopes (with FOV of about 10x10 degree), muon detectors with a total area of up to 2000-3000 m$^{2}$ and the radio array Tunka-Rex.

Published
2016

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