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1. The Tunka-Grande scintillation array: Current results

Author

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

Subjects
Physics, QC1-999
Abstract

The Tunka-Grande experiment is a scintillation array with about 0.5 km$^2$ sensitive area at Tunka Valley, Siberia, for measuring charged particles and muons in extensive air showers (EASs). Tunka-Grande is optimized for cosmic ray studies in the energy range 10 PeV to about 1 EeV, where exploring the composition is of fundamental importance for understanding the transition from galactic to extragalactic origin of cosmic rays. This paper attempts to provide a synopsis of the current results of the experiment. In particular, the reconstruction of the all-particle energy spectrum in the range of 10 PeV to 1 EeV based on experimental data from four observation seasons is presented.

Published
2023
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2. TAIGA - An advanced hybrid detector complex for astroparticle physics and high energy gamma-ray astronomy

Author

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

Subjects
Physics, QC1-999
Abstract

The physical motivations, present status, main results in study of cosmic rays and in the field of gamma-ray astronomy as well future plans of the TAIGA-1 (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) project are presented. The TAIGA observatory addresses ground-based gamma-ray astronomy and astroparticle physics at energies from a few TeV to several PeV, as well as cosmic ray physics from 100 TeV to several EeV. The pilot TAIGA-1 complex is located in the Tunka valley, 50 km west from the southern tip of the lake Baikal.

Published
2023
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3. Primary cosmic ray energy spectrum and mean mass composition using data from the TAIGA astrophysical complex

Author

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

Subjects
Physics, QC1-999
Abstract

The corrected dependence of the mean depth of the EAS maximum $X_{max}$ on the energy was obtained from the data of the Tunka-133 array for 7 years and the TAIGA-HiSCORE array for 2 years. The parameter $\langle\ln A\rangle$, characterizing the mean mass compositon was derived from these results. The differential energy spectrum of primary cosmic rays in the energy range of $2\cdot 10^{14}$ – $2\cdot 10^{16}$ eV was reconstructed using the new parameter $Q_{100}$ the Cherenkov light flux at the core distance 100 m. Change of the parameter for the energy reconstuction for the TAIGA-HiSCORE from $Q_{200}$ to $Q_{100}$ provides a decreasing energy threshold for the spectrum to about 200 TeV.

Published
2023
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4. Nanoantenna structures for the detection of phonons in nanocrystals

Author

Alexander G. Milekhin, Sergei A. Kuznetsov, Ilya A. Milekhin, Larisa L. Sveshnikova, Tatyana A. Duda, Ekaterina E. Rodyakina, Alexander V. Latyshev, Volodymyr M. Dzhagan, and Dietrich R. T. Zahn

Subjects
localized surface plasmon resonance, metal nanoclusters, nanoantenna, phonons, semiconductor nanocrystals, surface-enhanced infrared absorption, Technology, Chemical technology, TP1-1185, Science, Physics, QC1-999
Abstract

We report a study of the infrared response by localized surface plasmon resonance (LSPR) modes in gold micro- and nanoantenna arrays with various morphologies and surface-enhanced infrared absorption (SEIRA) by optical phonons of semiconductor nanocrystals (NCs) deposited on the arrays. The arrays of nano- and microantennas fabricated with nano- and photolithography reveal infrared-active LSPR modes of energy ranging from the mid to far-infrared that allow the IR response from very low concentrations of organic and inorganic materials deposited onto the arrays to be analyzed. The Langmuir–Blodgett technology was used for homogeneous deposition of CdSe, CdS, and PbS NC monolayers on the antenna arrays. The structural parameters of the arrays were confirmed by scanning electron microscopy. 3D full-wave electromagnetic simulations of the electromagnetic field distribution around the micro- and nanoantennas were employed to realize the maximal SEIRA enhancement for structural parameters of the arrays whereby the LSPR and the NC optical phonon energies coincide. The SEIRA experiments quantitatively confirmed the computational results. The maximum SEIRA enhancement was observed for linear nanoantennas with optimized structural parameters determined from the electromagnetic simulations. The frequency position of the feature’s absorption seen in the SEIRA response evidences that the NC surface and transverse optical phonons are activated in the infrared spectra.

Published
2018
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5. Surface-enhanced Raman scattering by colloidal CdSe nanocrystal submonolayers fabricated by the Langmuir–Blodgett technique

Author

Alexander G. Milekhin, Larisa L. Sveshnikova, Tatyana A. Duda, Ekaterina E. Rodyakina, Volodymyr M. Dzhagan, Ovidiu D. Gordan, Sergey L. Veber, Cameliu Himcinschi, Alexander V. Latyshev, and Dietrich R. T. Zahn

Subjects
CdSe nanocrystals, dimers, localized surface plasmon resonance, metal nanoclusters, phonons, surface-enhanced Raman spectroscopy, Technology, Chemical technology, TP1-1185, Science, Physics, QC1-999
Abstract

We present the results of an investigation of surface-enhanced Raman scattering (SERS) by optical phonons in colloidal CdSe nanocrystals (NCs) homogeneously deposited on both arrays of Au nanoclusters and Au dimers using the Langmuir–Blodgett technique. The coverage of the deposited NCs was less than one monolayer, as determined by transmission and scanning electron microscopy. SERS by optical phonons in CdSe nanocrystals showed a significant enhancement that depends resonantly on the Au nanocluster and dimer size, and thus on the localized surface plasmon resonance (LSPR) energy. The deposition of CdSe nanocrystals on the Au dimer nanocluster arrays enabled us to study the polarization dependence of SERS. The maximal SERS signal was observed for light polarization parallel to the dimer axis. The polarization ratio of the SERS signal parallel and perpendicular to the dimer axis was 20. The SERS signal intensity was also investigated as a function of the distance between nanoclusters in a dimer. Here the maximal SERS enhancement was observed for the minimal distance studied (about 10 nm), confirming the formation of SERS “hot spots”.

Published
2015
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6. Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures

Author

Alexander G. Milekhin, Nikolay A. Yeryukov, Larisa L. Sveshnikova, Tatyana A. Duda, Ekaterina E. Rodyakina, Victor A. Gridchin, Evgeniya S. Sheremet, and Dietrich R. T. Zahn

Subjects
copper sulfide (CuS) nanocrystals, interference-enhanced Raman spectroscopy, phonons, surface-enhanced Raman spectroscopy, Technology, Chemical technology, TP1-1185, Science, Physics, QC1-999
Abstract

We present the results of a Raman study of optical phonons in CuS nanocrystals (NCs) with a low areal density fabricated through the Langmuir–Blodgett technology on nanopatterned Au nanocluster arrays using a combination of surface- and interference-enhanced Raman scattering (SERS and IERS, respectively). Micro-Raman spectra of one monolayer of CuS NCs deposited on a bare Si substrate reveal only features corresponding to crystalline Si. However, a new relatively strong peak occurs in the Raman spectrum of CuS NCs on Au nanocluster arrays at 474 cm−1. This feature is related to the optical phonon mode in CuS NCs and manifests the SERS effect. For CuS NCs deposited on a SiO2 layer this phonon mode is also observed due to the IERS effect. Its intensity changes periodically with increasing SiO2 layer thickness for different laser excitation lines and is enhanced by a factor of about 30. CuS NCs formed on Au nanocluster arrays fabricated on IERS substrates combine the advantages of SERS and IERS and demonstrate stronger SERS enhancement allowing for the observation of Raman signals from CuS NCs with an ultra-low areal density.

Published
2015
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7. Possibilities of the Tunka-Grande and TAIGA-Muon scintillation arrays with the TAIGA-HiSCORE Cherenkov array joint operation in the research of cosmic and gamma rays

Author

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

Subjects
Physics, History, Scintillation, Muon, COSMIC cancer database, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Taiga, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Astronomy, Computer Science Applications, Education, Joint (geology), Cherenkov radiation
Abstract

The Tunka-Grande scintillation array is part of the TAIGA Gamma Observatory. It is intended for investigation of energy spectrum and mass composition of primary cosmic rays in the energy range 10 PeV–10 EeV and the search for diffuse cosmic gamma rays. The TAIGA-HiSCORE Cherenkov array aims at observing gamma-rays with the energy from 1 TeV. TAIGA-Muon low-threshold scintillation detector array is a network of surface and underground detectors for registration charge particles of EAS. Currently, 3 clusters have been deployed. The first cluster is running in test mode. It is planed that in the future the total area of the TAIGA-Muon will be about 2000 sq. m. and it will search astrophysical gamma-rays in the energy range from 100 TeV together with the Tunka-Grande scintillation array and the Cherenkov experiments of the TAIGA Gamma Observatory. To evaluate the possibility of join operation Tunka-Grande, TAIGA-Muon and TAIGA-HiSCORE, a simulation was performed using the CORSIKA and Geant4 software packages. The status of model-based studies is presented and assessed the prospects for joint operation of the arrays.

Published
2020
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8. 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
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9. 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

10. Tunka-HiSCORE – A new array for multi-TeV γ-ray astronomy and cosmic-ray physics

Author

O. Gress, M. Brüeckner, S. Berezhnev, N. Budnev, M. Buker, O. Chvalaev, A. Dyachok, U. Einhaus, S. Epimakhov, D. Hampf, D. Horns, N. Kalmykov, N. Karpov, E. Konstantinov, E. Korosteleva, M. Kunnas, V. Kozhin, L. Kuzmichev, B. Lubsandorzhiev, N. Lubsandorzhiev, R. Mirgazov, R. Monkhoev, R. Nachtigall, A. Pakharukov, M. Panasyuk, L. Pankov, E. Popova, A. Porelli, V. Prosin, V. Ptuskin, G. Rowell, Yu Semeney, B. Shaibonov, A. Silaev, A. Silaev(ju), A. Skurikhin, C. Spiering, D. Spitschan, L. Sveshnikova, M. Tluczykont, R. Wischnewski, I. Yashin, A. Zagorodnikov, and V. Zirakashvili

Subjects
Physics, Nuclear and High Energy Physics, COSMIC cancer database, Sky, media_common.quotation_subject, Detector, Astronomy, Cosmic ray, Astrophysics, Instrumentation, Cherenkov radiation, media_common
Abstract

Tunka-HiSCORE (HiSCORE: Hundred Square-km Cosmic Origin Explorer) is a new Cherenkov EAS arrayfor multi-TeV γ ray astronomy and cosmic ray studies. The array will consist of wide-angle (0.6 sr)optical stations with 150 m distance between individual stations. The array will be constructed in severalstages: beginning with a 1 km 2 array at the first stage up to 100 km at the last stage. The first threestations have been installed during 2012 in Tunka Valley (50 km from the Southern tip of Lake Baikal) atthe site of the Tunka-133 array. We describe the construction of the optical stations and the array DAQ,and present the first results of common operation of the new optical stations with the Tunka-133 array.& 2013 Elsevier B.V. All rights reserved. 1. IntroductionWe propose to explore the so far poorly measured cosmic ray andγ ray sky in the energy region from 20 TeV to 100 PeV with thelarge area wide-angle cosmic ray and γ ray detector Tunka-HiSCORE[1,2]. Tunka-HiSCORE will be a non-imaging Cherenkov light-frontsampling array with large sensitive area (0.5 m

Published
2013
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11. 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

12. The wide-aperture gamma-ray telescope TAIGA-HiSCORE in the Tunka Valley: Design, composition and commissioning

Author

O. Gress, I. Astapov, N. Budnev, P. Bezyazeekov, A. Bogdanov, V. Boreyko, M. Brückner, A. Chiavassa, O. Chvalaev, A. Dyachok, T. Gress, S. Epimakhov, E. Fedoseev, A. Gafarov, N. Gorbunov, V. Grebenyuk, A. Grinuk, O. Grishin, D. Horns, A. Ivanova, A. Kalinin, N. Karpov, N. Kalmykov, Yu. Kazarina, N. Kirichkov, S. Kiryuhin, R. Kokoulin, K. Komponiest, E. Korosteleva, V. Kozhin, 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. Petrukhin, V. Platonov, V. Poleschuk, E. Popova, A. Porelli, V. Prosin, G. Rubtsov, A. Pushnin, V. Samoliga, A. Saunkin, Yu. Semeney, B. Shaibonov(ju), A. Silaev, A. Silaev(ju), A. Skurikhin, V. Slucka, C. Spiering, L. Sveshnikova, V. Tabolenko, B. Tarashchansky, A. Tkachenko, L. Tkachev, M. Tluczykont, D. Voronin, R. Wischnewski, A. Zagorodnikov, V. Zurbanov, I. Yashin, Shaibonov, B., and Silaev, A.

Subjects
Data acquisition system, Nuclear and High Energy Physics, Cherenkov light, Cherenkov detector, Cosmic ray, 01 natural sciences, Particle detector, law.invention, Optics, law, 0103 physical sciences, ddc:530, 010306 general physics, Instrumentation, Cherenkov radiation, Physics, Gamma-ray sources, 010308 nuclear & particles physics, business.industry, Detector, Gamma ray, Cherenkov Telescope Array, business, Fermi Gamma-ray Space Telescope
Abstract

Nuclear instruments & methods in physics research / A 845, 367 - 372 (2017). doi:10.1016/j.nima.2016.08.031, The new TAIGA-HiSCORE non-imaging Cherenkov array aims to detect air showers induced by gamma rays above 30 TeV and to study cosmic rays above 100 TeV. TAIGA-HiSCORE is made of integrating air Cherenkov detector stations with a wide field of view (0.6 sr), placed at a distance of about 100 m. They cover an area of initially ∼0.25 km$^2$ (prototype array), and of ∼5 km$^2$ at the final phase of the experiment. Each station includes 4 PMTs with 20 or 25 cm diameter, equipped with light guides shaped as Winstone cones. We describe the design, specifications of the read-out, DAQ and control and monitoring systems of the array. The present 28 detector stations of the TAIGA-HiSCORE engineering setup are in operation since September 2015., Published by North-Holland Publ. Co., Amsterdam

Published
2017
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13. 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

14. Nonradiative exciton transfer by the Förster mechanism from InAs/AlAs quantum dots to dye molecules in hybrid structures

Author

Dmitriy V. Dmitriev, L. L. Sveshnikova, P. Tronc, and T. S. Shamirzaev

Subjects
Physics, Physics and Astronomy (miscellaneous), Solid-state physics, Condensed Matter::Other, Exciton, Physics::Optics, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Resonance (chemistry), Molecular physics, Condensed Matter::Materials Science, chemistry.chemical_compound, Dipole, chemistry, Quantum dot, Molecule, sense organs, Physics::Chemical Physics, Cyanine, Atomic physics, skin and connective tissue diseases, Biexciton
Abstract

Forster resonance transfer of excitons from self-assembled InAs/AlAs quantum dots to cyanine dye molecules deposited on the structure surface is investigated. It is shown that the efficiency of the exciton transfer changes upon the interaction of cyanine dye molecules with chloroform due to a change in the molecule dipole moment.

Published
2012
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15. Method of Separation Between Light and Heavy Groups of Primary CR Nuclei by LDF of Cherenkov Light in the Range 300–3000 TeV

Author

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

Subjects
Physics, Range (particle radiation), Distribution function, Primary (astronomy), Astrophysics::High Energy Astrophysical Phenomena, Separation (aeronautics), Measurement uncertainty, Energy (signal processing), Cherenkov radiation, Computational physics, Parametric statistics
Abstract

The problem of chemical composition below the knee in the cosmic-ray energy spectrum has not yet been solved due to low statistics collected from direct experiments. In the HiSCORE experiment the lateral distribution functions (LDF) of Cherenkov light of EASs with energy greater than hundreds of TeV can be measured in detail for millions of individual events. A full steepness of LDF is sensitive to the depth of shower maximum and as a result to primary particle type. In this paper, we developed a parametric method of separation between heavy and light groups of nuclei using the ’knee-like’ approximation of LDF and taking into account measurement uncertainty.

Published
2018
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16. The Tunka detector complex: from cosmic-ray to gamma-ray astronomy

Author

N Budnev, I Astapov, N Barbashina, A Bogdanov, D Bogorodskii, V Boreyko, M Büker, M Brückner, A Chiavassa, O Chvalaev, O Gress, T Gress, A Dyachok, S Epimakhov, A Gafatov, N Gorbunov, V Grebenyuk, A Grinuk, A Haungs, R Hiller, D Horns, T Huege, A Ivanova, A Kalinin, N Karpov, N Kalmykov, Y Kazarina, V Kindin, N Kirichkov, S Kiryuhin, M Kleifges, R Kokoulin, K Komponiest, A Konstantinov, E Konstantinov, A Korobchenko, 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 Petrukhin, V Platonov, V Poleschuk, E Popova, A Porelli, V Prosin, V Ptuskin, G Rubtsov, C Rühle, V Samoliga, P Satunin, V Savinov, A Saunkin, F Schröder, Yu Semeney, B Shaibonov, A Silaev, A Skurikhin, V Slucka, C Spiering, L Sveshnikova, V Tabolenko, A Tkachenko, L Tkachev, M Tluczykont, D Voronin, R Wischnewski, A Zagorodnikov, V Zurbanov, and I Yashin

Subjects
Physics, History, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Knee region, Astrophysics, Gamma-ray astronomy, Cherenkov Telescope Array, Computer Science Applications, Education, ddc:530, Cherenkov radiation
Abstract

TAIGA stands for "Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy" and is a project to build a complex, hybrid detector system for ground-based gamma- ray astronomy from a few TeV to several PeV, and for cosmic-ray studies from 100 TeV to 1 EeV. TAIGA will search for "PeVatrons" (ultra-high energy gamma-ray sources) and measure the composition and spectrum of cosmic rays in the knee region (100 TeV - 10 PeV) with good energy resolution and high statistics. TAIGA will include Tunka-HiSCORE (an array of wide-angle air Cherenkov stations), an array of Imaging Atmospheric Cherenkov Telescopes, an array of particle detectors, both on the surface and underground, and the TUNKA-133 air Cherenkov array.

Published
2015
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17. Simulation of the hybrid Tunka Advanced International Gamma-ray and Cosmic ray Astrophysics (TAIGA)

Author

M Kunnas, I Astapov, N Barbashina, S Beregnev, A Bogdanov, D Bogorodskii, V Boreyko, M Brückner, N Budnev, A Chiavassa, O Chvalaev, A Dyachok, S Epimakhov, T Eremin, A Gafarov, N Gorbunov, V Grebenyuk, O Gress, T Gress, A Grinyuk, O Grishin, D Horns, A Ivanova, N Karpov, N Kalmykov, Y Kazarina, V Kindin, N Kirichkov, S Kiryuhin, R Kokoulin, K Kompaniets, E Konstantinov, A Korobchenko, E Korosteleva, V Kozhin, 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, M Popescu, E Popova, A Porelli, S Porokhovoy, V Prosin, V Ptuskin, V Romanov, G I Rubtsov, null Müger, E Rybov, V Samoliga, P Satunin, A Saunkin, V Savinov, Yu Semeney, B Shaibonov, A Silaev, A Skurikhin, M Slunecka, C Spiering, L Sveshnikova, V Tabolenko, A Tkachenko, L Tkachev, M Tluczykont, A Veslopopov, E Veslopopova, D Voronov, R Wischnewski, I Yashin, K Yurin, A Zagorodnikov, V Zirakashvili, and V Zurbanov

Subjects
Physics, History, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, Cosmic ray, Astrophysics, Hybrid approach, Wide field, Computer Science Applications, Education, Angular resolution, ddc:530, Cherenkov radiation
Abstract

Up to several 10s of TeV, Imaging Air Cherenkov Telescopes (IACTs) have proven to be the instruments of choice for GeV/TeV gamma-ray astronomy due to their good reconstrucion quality and gamma-hadron separation power. However, sensitive observations at and above 100 TeV require very large effective areas (10 km2 and more), which is difficult and expensive to achieve.The alternative to IACTs are shower front sampling arrays (non-imaging technique or timing-arrays) with a large area and a wide field of view. Such experiments provide good core position, energy and angular resolution, but only poor gamma-hadron separation. Combining both experimental approaches, using the strengths of both techniques, could optimize the sensitivity to the highest energies.The TAIGA project plans to combine the non-imaging HiSCORE [8] array with small (~10m2) imaging telescopes. This paper covers simulation results of this hybrid approach.

Published
2015
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18. Towards gamma-ray astronomy with timing arrays

Author

M Tluczykont, I Astapov, N Barbashina, S Beregnev, A Bogdanov, D Bogorodskii, V Boreyko, M Brückner, N Budnev, A Chiavassa, O Chvalaev, A Dyachok, S Epimakhov, T Eremin, A Gafarov, N Gorbunov, V Grebenyuk, O Gress, T Gress, A Grinyuk, O Grishin, D Horns, A Ivanova, N Karpov, N Kalmykov, Y Kazarina, V Kindin, N Kirichkov, S Kiryuhin, R Kokoulin, K Kompaniets, E Konstantinov, A Korobchenko, E Korosteleva, V Kozhin, 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, M Popescu, E Popova, A Porelli, S Porokhovoy, V Prosin, V Ptuskin, V Romanov, G Rubtsov, M Rueger, E Rybov, V Samoliga, P Satunin, A Saunkin, V Savinov, Yu Semeney, B Shaibonov, A Silaev, A Skurikhin, M Slunecka, C Spiering, L Sveshnikova, V Tabolenko, A Tkachenko, L Tkachev, A Veslopopov, E Veslopopova, D Voronov, R Wischnewski, I Yashin, K Yurin, A Zagorodnikov, V Zirakashvili, and V Zurbanov

Subjects
Physics, History, Range (particle radiation), Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cosmic ray, Gamma-ray astronomy, Astrophysics, Computer Science Applications, Education, law.invention, Telescope, Crab Nebula, law, ddc:530, Cherenkov radiation, Energy (signal processing)
Abstract

The gamma-ray energy regime beyond 10 TeV is crucial for the search for the most energetic Galactic accelerators. The energy spectra of most known gamma-ray emitters only reach up to few 10s of TeV, with 80 TeV from the Crab Nebula being the highest energy so far observed significantly. Uncovering their spectral shape up to few 100 TeV could answer the question whether some of these objects are cosmic ray Pevatrons, i.e. Galactic PeV accelerators.Sensitive observations in this energy range and beyond require very large effective detector areas of several 10s to 100 square-km. While imaging air Cherenkov telescopes have proven to be the instruments of choice in the GeV to TeV energy range, very large area telescope arrays are limited by the number of required readout channels per instrumented square-km (due to the large number of channels per telescope). Alternatively, the shower-front sampling technique allows to instrument large effective areas and also naturally provides large viewing angles of the instrument. Solely measuring the shower front light density and timing (hence timing- arrays), the primary particle properties are reconstructed on the basis of the measured lateral density function and the shower front arrival times. This presentation gives an overview of the technique, its goals, and future perspective.

Published
2015
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19. 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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20. TAIGA observatory: IACT fabrication and tests

Author

Yaroslav Sagan, I. Astapov, Pavel Bezyazeekov, A. Borodin, M. Brueckner, N. M. Budnev, 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. Ivanova, N. Kalmykov, Y. Kazarina, V. Kindin, P. Kirilenko, S. Kiryuhin, R. Kokoulin, K. Kompaniets, E. Korosteleva, Vladimir V Kozhin, E. Kravchenko, M. Kunnas, L. Kuzmichev, Yu. Lemeshev, V. Lenok, N. Lubsandorzhiev, B. Lubsandorzhiev, R. R. Mirgazov, R. Mirzoyan, R. Monkhoev, R. Nachtigall, E. Osipova, A. Pakhorukov, A. Pan, M. I. Panasyuk, L. Pankov, A. Petrukhin, V. Poleschuk, E. Popescu, E. Popova, A. Porelli, E. Postnikov, V. Prosin, V. Ptuskin, A. Pushnin, E. Rjabov, G. Rubtsov, B. Sabirov, V. Samoliga, Andrei Sidorenkov, A. Silaev, A. Silaev(junior), V. Slunecka, A. V. Skurikhin, A. Sokolov, Y. Suvorkin, L. Sveshnikova, V. A. Tabolenko, A. Tanaev, B. Tarashansky, L. Tkachev, M. Tluczykont, R. Wishnevski, I. Yashin, A. Zagorodnikov, and D. Zhurov

Subjects
Physics, Fabrication, Observatory, Gamma ray, Astronomy, Cosmic ray, IACT, Cherenkov radiation
Abstract

Imaging Atmospheric Cherenkov Telescopes (IACTs) are one of the key parts of the TAIGA observatory, which is designed to study gamma rays and charged cosmic rays in the energy range of 10^13 eV – 10^18 eV. The current prototype phase comprises three IACTs. The first IACT was fabricated at JINR, Dubna, and started its first commissioning season in the Tunka valley in 2017. The second one has been assembled there in fall 2018, the third structure one is ready for installation in autumn 2019. This report presents the main TAIGA IACT characteristics and results from pointing performance studies in the last 2 seasons. We also describe R&D activities started to fabricate focusing glass mirrors at JINR, and give results for the first prototypes measurements.

21. Camera of the first TAIGA-IACT: Construction and calibration

Author

Nima Lubsandorzhiev, I. Astapov, Pavel Bezyazeekov, V. Boreyko, A. Borodin, M. Brueckner, N. M. Budnev, A. Chiavassa, Aleksei Nikolaevich Dyachok, O. Fedorov, Aleksandr Gafarov, A. Garmash, N. Gorbunov, Victor Grebenyuk, O. Gress, T. I. Gress, O. Grishin, A. Grinyuk, 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, M. Kunnas, L. Kuzmichev, Yu. Lemeshev, V. Lenok, B. Lubsandorzhiev, Rashid Mirgazov, Razmik Mirzoyan, R. Monkhoev, R. Nachtigall, E. Osipova, A. Pakhorukov, M. I. Panasyuk, Leonid Pankov, A. Petrukhin, V. Poleschuk, E. Popescu, E. Popova, A. Porelli, E. Postnikov, V. Prosin, V. Ptuskin, Evgenii V Rjabov, G. Rubtsov, A. Pushnin, Yaroslav Sagan, B. Sabirov, V. Samoliga, Yu. Semeney, A. Silaev, A. Silaev(junior), Andrei Sidorenkov, Aleksandr Vasilevich Skurihin, V. Slunecka, A. V. Sokolov, C. Spiering, L. Sveshnikova, V. A. Tabolenko, B. Tarashansky, A. Tkachenko, L. Tkachev, M. Tluczykont, R. Wischnewski, Aleksey Zagorodnikov, D. Zhurov, Valery Zurbanov, and I. Yashin

Subjects
Physics, Photomultiplier, business.industry, Detector, IACT, law.invention, Telescope, Data acquisition, Optics, law, Calibration, Focal length, business, Cherenkov radiation
Abstract

The first imaging atmospheric Cherenkov telescope as a part of the TAIGA (Tunka Advanced Instrument for cosmic rays and Gamma Astronomy) detector was put into commission in the Tunka valley in December 2016. The reflector of the telescope follows the Davis-Cotton design. It is composed of 34 glassmirror tiles, each of 60 cm diameter, and has a diameter of 4.3 m. The focal length is 4.75 m. The imaging camera includes 560 photomultiplier-based pixels, providing a FoV of ~10×10 degrees. The imaging camera is made by using a modular principle and includes trigger, data acquisition and processing systems based on MAROC3 chips. The slow control system monitors the count rate and the PMT anode currents as well as controls the high voltage. For monitoring performance of the camera a dedicated calibration system based on nanosecond pulsed LED light source was developed.

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