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1. An experimental string of the NT1000 Baikal neutrino telescope

Author

A.P. Koshechkin, V.F. Kulepov, I. A. Belolaptikov, V. M. Aynutdinov, E.N. Pliskovsky, A. M. Klabukov, A. V. Zagorodnikov, L. A. Kuzmichev, A.V. Avrorin, A. N. Dyachok, O. G. Grishin, S. Mikheyev, T. I. Gress, A. A. Sheifler, I. A. Danilchenko, R. R. Mirgazov, A. S. Yagunov, D. P. Petukhov, E. A. Osipova, V. Yu. Rubtzov, E. V. Ryabov, K.V. Konischev, A. I. Klimov, A. V. Shirokov, M.B. Milenin, Ch. Spiering, A. I. Panfilov, K.V. Golubkov, G. Pan'kov, M.I. Rozanov, A. A. Doroshenko, B. A. Shaibonov, O. A. Gress, R. Wischnewski, Zh.-A.M. Dzhilkibaev, Olga Suvorova, V. V. Prosin, E.G. Popova, L. V. Pankov, G.V. Domogatsky, D.Yu. Bogorodsky, O. N. Gaponenko, V. I. Lyashuk, B.A. Tarashansky, A.V. Korobchenko, D.A. Kuleshov, S.V. Fialkovsky, V. A. Zhukov, V. A. Poleschuk, N. M. Budnev, A. A. Perevalov, and E. Middell

Subjects
Physics, Photomultiplier, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Field tests, Astrophysics, String (physics), law.invention, Telescope, law, ddc:620, Effective volume, Instrumentation
Abstract

A project of the NT1000 deep-water neutrino telescope with an effective volume of ∼1 km3 is currently being developed by the BAIKAL collaboration. The telescope will be located in Lake Baikal in close vicinity of the NT200+ detector, which is currently in operation. The telescope will be composed of 12 clusters with 8 similar strings of optical modules in each (each string has two sections of the NT1000 optical modules). The section of the NT1000 optical modules has been developed using higher-efficiency photomultiplier tubes and state-of-the-art electronics. The field tests of the experimental string consisting of two sections with six optical modules in each have been performed. The results of these investigations are used in the project of the NT1000 neutrino telescope and in the hydrological study of Lake Baikal.

Published
2011
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2. The Baikal Experiment: from Megaton to Gigaton

Author

N. M. Budnev, D. P. Petukhov, E. Middell, A. I. Klimov, R. Wischnewski, M.B. Milenin, K.V. Golubkov, I. A. Belolaptikov, A. I. Panfilov, E. A. Osipova, Olga Suvorova, M.I. Rozanov, O. N. Gaponenko, L. V. Pankov, V. A. Poleschuk, I. V. Yashin, B. Shoibonov, A.D. Avrorin, E.G. Popova, G.V. Domogatsky, A. N. Dyachok, L. A. Kuzmichev, A.A. Sheifler, V. M. Aynutdinov, S. Mikheyev, A. Kochanov, R. R. Mirgazov, B.A. Tarashansky, D.A. Kuleshov, S.V. Fialkovsky, Ch. Spiering, O. A. Gress, T. I. Gress, V. A. Zhukov, K.V. Konischev, D. Bogorodsky, A. V. Shirokov, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, E.N. Pliskovsky, V. V. Prosin, A. M. Klabukov, V.A. Balkanov, G. Pan'kov, A.P. Koshechkin, O. G. Grishin, V. Rubtzov, V.F. Kulepov, I. A. Danilchenko, and P. G. Pokhil

Subjects
Nuclear physics, Physics, History, Radiation flux, Neutrino detector, C++ string handling, ddc:530, Neutrino, Particle detector, Computer Science Applications, Education, Lepton
Abstract

We review the status of the Lake Baikal Neutrino Experiment. Preparation towards a km3-scale Gigaton Volume Detector (GVD) in Lake Baikal is currently a central activity. As an important milestone, a km3-prototype string comprising 6 optical modules and based on a completely new technology, has been installed and was put into operation together with NT200+ in April, 2008. An upgraded version of the prototype string, which comprises 12 optical modules, was put into operation in April 2009. We also present new results from the long-term operation of NT200, including an improved limit on the diffuse astrophysical neutrino flux.

Published
2010
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3. The prototype string for the km3-scale Baikal neutrino telescope

Author

A.D. Avrorin, E.G. Popova, M.B. Milenin, G.V. Domogatsky, A. I. Panfilov, G. Pan'kov, V. A. Poleschuk, K.V. Konischev, M.I. Rozanov, E. A. Osipova, O. N. Gaponenko, P. G. Pokhil, V.A. Balkanov, B.A. Tarashansky, I. A. Danilchenko, E. Middell, A. N. Dyachok, V. M. Aynutdinov, E.N. Pliskovsky, K.V. Golubkov, A. M. Klabukov, Ch. Spiering, N. M. Budnev, Olga Suvorova, L. V. Pankov, O. G. Grishin, V. Rubtzov, A. Kochanov, R. R. Mirgazov, T. I. Gress, A.A. Sheifler, A. A. Doroshenko, A. I. Klimov, I. V. Yashin, Zh.-A.M. Dzhilkibaev, A.P. Koshechkin, D. P. Petukhov, V. V. Prosin, D. Bogorodsky, O. A. Gress, I. A. Belolaptikov, A. V. Shirokov, B. Shoibonov, D.A. Kuleshov, Ralf Wischnewski, L. A. Kuzmichev, S. Mikheyev, V.F. Kulepov, S.V. Fialkovsky, and V. A. Zhukov

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Particle physics, Scale (ratio), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, FOS: Physical sciences, Astrophysics, law.invention, Telescope, law, Calibration, C++ string handling, ddc:530, Instrumentation
Abstract

A prototype string for the future km3-scale Baikal neutrino telescope has been deployed in April, 2008 and is fully integrated into the NT200+ telescope. All basic string elements - optical modules (with 12"/13" hemispherical photomultipliers), 200MHz FADC readout and calibration system - have been redesigned following experience with NT200+. First results of in-situ operation of this prototype string are presented., Comment: 8 pages, 15 figures; presented at VLVNT08 (Very Large Volume Neutrino Telescope) Workshop, Toulon, France, April, 2008; to appear in NIM-A

Published
2008
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4. The Baikal neutrino experiment: Status, selected physics results, and perspectives

Author

P. G. Pokhil, A. I. Panfilov, G. Pan'kov, A. A. Doroshenko, V. A. Poleschuk, V.M. Aynutdinov, Zh.-A.M. Dzhilkibaev, A.P. Koshechkin, I. V. Yashin, N. M. Budnev, K.V. Konischev, V. Rubtzov, E.N. Pliskovsky, A. M. Klabukov, V. V. Prosin, M.B. Milenin, V.A. Balkanov, Ralf Wischnewski, L. A. Kuzmichev, G.V. Domogatsky, A. Kochanov, R. R. Mirgazov, S. Mikheyev, O. N. Gaponenko, K.V. Golubkov, E. A. Osipova, M.I. Rozanov, A.A. Sheifler, T. I. Gress, A. I. Klimov, I. A. Danilchenko, B.A. Tarashansky, O. A. Gress, V.F. Kulepov, A.D. Avrorin, E. Middell, A. V. Shirokov, O. G. Grishin, B. Shoibonov, S.V. Fialkovsky, V. A. Zhukov, D. P. Petukhov, L. V. Pankov, A. N. Dyachok, Ch. Spiering, I. A. Belolaptikov, and E.G. Popova

Subjects
Physics, Particle physics, Nuclear and High Energy Physics, Scale (ratio), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Neutrino telescope, Detector, Magnetic monopole, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, Solar neutrino problem, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, ddc:530, Neutrino, Neutrino astronomy, Neutrino oscillation, Instrumentation, Lepton
Abstract

We review the status of the Baikal neutrino telescope, which is operating in Lake Baikal since 1998 and has been upgraded to the 10 Mton detector NT 200 + in 2005. We present selected physics results on searches for upward going neutrinos, relativistic magnetic monopoles and for very high-energy neutrinos. We describe the strategy of creating a detector on the Gigaton ( km 3 ) scale at Lake Baikal. First steps of activities towards a km 3 Baikal neutrino telescope are discussed.

Published
2008
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5. The BAIKAL Neutrino Telescope: From NT200 to NT200+

Author

P. G. Pokhil, R. Vasiliev, A. I. Panfilov, K.V. Golubkov, O. N. Gaponenko, A. N. Dyachok, B.A. Tarashansky, A. I. Klimov, I. A. Danilchenko, K.V. Konischev, Yu. V. Parfenov, Ch. Spiering, G. Pan'kov, L. B. Bezrukov, N. M. Budnev, K. V. Burmistrov, D. P. Petukhov, A. A. Doroshenko, V.F. Kulepov, M. I. Rosanov, V. M. Aynutdinov, R. Wischnewski, I. I. Yashin, Zh.-A.M. Dzhilkibaev, V. V. Prosin, A.P. Koshechkin, S.V. Fialkovsky, M.B. Milenin, V. A. Zhukov, T. I. Gress, I. A. Belolaptikov, E.N. Pliskovsky, A. M. Klabukov, T. Mikolajski, O. A. Gress, A. V. Shirokov, V. A. Balkanov, E.G. Popova, Vy. Kuznetzov, L. V. Pankov, O. G. Grishin, V. A. Poleschuk, A. Kochanov, R. R. Mirgazov, B. A. M. Shaibonov, Bayarto Lubsandorzhiev, G.V. Domogatsky, D. Borschev, L. A. Kuzmichev, S. Mikheyev, V. Rubtzov, Ya. Davidov, E. A. Osipova, and A. A. Pavlov

Subjects
Physics, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, Detector, Neutrino telescope, General Physics and Astronomy, Astronomy, Astrophysics, Solar neutrino problem, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, ddc:530, Neutrino, Neutrino astronomy
Abstract

We review the status of the Baikal Neutrino Telescope, which has recently been upgraded to the 5 Mton detector NT200+. We present results on searches for upward going atmospheric neutrinos and relativistic magnetic monopoles, obtained from 1998-2002 with the predecessor detector NT200. A search for very high energy neutrinos yields an upper limit on the extraterrestrial diffuse neutrino flux for 20 TeV < E < 50 PeV. We describe the strategy of upgrading NT200 to NT200+ and creating a detector on the Gigaton (km3) scale at lake Baikal. R&D activities on that next stage detector have been started.

Published
2006
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6. High-frequency acoustic noise of Lake Baikal

Author

T. I. Gress, E. N. Pliskovskiĭ, Ole Streicher, V. Yu. Rubtsov, V. A. Zhukov, S. I. Klimushin, O. N. Gaponenko, A. G. Chenskiĭ, N. M. Budnev, G. Pan'kov, B. A. Tarashchanskiĭ, O. A. Gress, S. V. Fialkovskiĭ, G. V. Domogatskiĭ, L. A. Kuzmichev, E. A. Osipova, S. P. Mikheev, Bayarto Lubsandorzhiev, A.P. Koshechkin, R. V. Vasil’ev, I. A. Belolaptikov, T. Mikolajskiĭ, V. A. Balkanov, A. N. Dyachok, A. I. Panfilov, E.G. Popova, V. M. Aĭnutdinov, M.B. Milenin, R. Wischnewski, M.I. Rozanov, Ch. Spiering, I. V. Yashin, R. Yu. Gnatovskiĭ, A. M. Klabukov, O. G. Grishin, A. Kochanov, R. R. Mirgazov, L. B. Bezrukov, A. I. Klimov, V. Poleshchuk, B. A. Shaĭbonov, L. V. Pankov, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, V. V. Prosin, K. V. Konishchev, A. A. Pavlov, I. A. Danilchenko, P. G. Pokhil, and V.F. Kulepov

Subjects
Physics, Noise, Noise power, Optics, Amplitude, Acoustics and Ultrasonics, business.industry, Frequency band, Acoustics, ddc:530, Neutrino, business
Abstract

High-frequency noise of Lake Baikal is investigated using a submersible self-contained instrument to determine the noise background for the acoustic detection of superhigh-energy neutrinos. It is found that, under stationary and uniform meteorological conditions, the integral noise power in the frequency band 1–50 kHz is virtually independent of depth and is 10–200 mPa or more, depending on the specific conditions. The noise itself contains multiple short pulses of different amplitudes and shapes.

Published
2006
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7. Status and new results from the BAIKAL detector

Author

N. M. Budnev, D. P. Petukhov, A. I. Panfilov, E. A. Osipova, A.P. Koshechkin, O. N. Gaponenko, B.A. Tarashansky, BayarJon Paul Lubsandorzhiev, V. Rubtzov, D. Borschov, P. G. Pokhil, Ya. Davidov, V.F. Kulepov, M.B. Milenin, T. I. Gress, S. I. Klimushin, E.N. Pliskovsky, I. I. Yashin, V. M. Aynutdinov, A. M. Klabukov, K.V. Golubkov, A. Kochanov, M. I. Rosanov, R. R. Mirgazov, R. Wischnewski, A. A. Doroshenko, L. A. Kuzmichev, A. V. Shirokov, Zh.-A.M. Dzhilkibaev, R. Vasiliev, S. Mikheyev, A. I. Klimov, V. V. Prosin, B. A. M. Shaibonov, V. Polecshuk, S.V. Fialkovsky, O. A. Gress, V. A. Zhukov, A. A. Pavlov, G.V. Domogatsky, G. Pan'kov, L. B. Bezrukov, K Burmistrov, I. A. Danilchenko, O. G. Grishin, K.V. Konischev, T. Mikolajski, I. A. Belolaptikov, Vy. Kuznetzov, Yu. A. Semeney, V.A. Balkanov, E.G. Popova, A. N. Dyachok, Ch. Spiering, and L. V. Pankov

Subjects
Physics, History, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Particle detector, Computer Science Applications, Education, Neutrino detector, High Energy Physics::Experiment, ddc:530, Neutrino, Lepton
Abstract

We review the present status of the Baikal Neutrino Experiment. On April 9th, 2005 the 10 Mton scale detector NT200+ was put into operation in Lake Baikal. We describe the configuration and physics potential of this detector. Selected results obtained during 1998-2002 with the neutrino telescope NT200 are presented.

Published
2006
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8. High frequency noise in Lake Baikal as a background for the acoustic detection of high energy neutrinos

Author

G. Pan'kov, T. I. Gress, A. A. Pavlov, V. Yu. Rubtzov, A. V. Shirokov, A. Kochanov, R. R. Mirgazov, S. V. Fialkovski, V. A. Poleschuk, E. A. Osipova, L. B. Bezrukov, P. G. Pokhil, A.G. Chensky, O. G. Grishin, B. K. Lubsandorzhiev, B.A. Tarashansky, E.G. Popova, Ya. Davidov, R. V. Vasiljev, B. A. M. Shaibonov, I. A. Belolaptikov, E.N. Pliskovsky, I. A. Danilchenko, A. M. Klabukov, G.V. Domogatsky, K.V. Golubkov, I. V. Yashin, Vy. Kuznetzov, D. P. Petuhov, O. N. Gaponenko, A.P. Koshechkin, L. V. Pankov, N. M. Budnev, K. V. Burmistrov, V. M. Aynutdinov, V. A. Zhukov, R. Wischnewski, K.V. Konischev, M.B. Milenin, A. I. Klimov, V.A. Balkanov, Yu. V. Parfenov, O. A. Gress, A. N. Dyachok, Ch. Spiering, A. I. Panfilov, M.I. Rozanov, T. Mikolajski, A. A. Doroshenko, V.F. Kulepov, V. V. Prosin, Zh. A. M. Djilkibaev, L. A. Kuzmichev, S. Mikheyev, and D. Borschev

Subjects
Physics, Nuclear and High Energy Physics, High energy, Physics::Instrumentation and Detectors, Acoustics, Astronomy and Astrophysics, Interference (wave propagation), Atomic and Molecular Physics, and Optics, Noise, Amplitude, Neutrino detector, Correlation analysis, ddc:530, Neutrino, Frequency noise
Abstract

We review the ongoing work of the Baikal Collaboration on acoustic detection of super high energy neutrinos. Some results of the study of high frequency acoustic noise in Lake Baikal are presented. A lot of short impulses with different amplitudes and shapes were detected, which should be considered as a background for acoustic neutrino detection. However, most of the short impulses appear to be due to noise sound waves interference and can be eliminated by a correlation analysis. Only a few detected bipolar impulses probably were produced by quasi local sources.

Published
2006
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9. Search for a Diffuse Flux of High-Energy Extraterrestrial Neutrinos with the NT200 Neutrino Telescope

Author

V. A. Poleschuk, L. B. Bezrukov, I. A. Danilchenko, M.B. Milenin, R. R. Mirgazov, E. Vyatchin, S.V. Fialkovsky, I. I. Yashin, B. A. M. Shaibonov, V. A. Zhukov, T. I. Gress, P. G. Pokhil, B.A. Tarashansky, S. I. Klimushin, V.F. Kulepov, I. A. Belolaptikov, O. G. Grishin, L. A. Kuzmichev, O. A. Gress, S. Mikheyev, G.V. Domogatsky, D. Borschov, R. Wischnewski, A. V. Shirokov, A.G. Chensky, R. Vasiliev, E. A. Osipova, A. I. Klimov, A.P. Koshechkin, G. Pan'kov, B. K. Lubsandorzhiev, E.N. Pliskovsky, A. M. Klabukov, K.V. Konischev, V. M. Aynutdinov, Yu. A. Semeney, O. N. Gaponenko, A. I. Panfilov, V.A. Balkanov, M.I. Rozanov, N. M. Budnev, D. P. Petukhov, Yu. V. Parfenov, A. A. Doroshenko, T. Mikolajski, Zh.-A.M. Dzhilkibaev, V. V. Prosin, A. N. Dyachok, Ch. Spiering, L. V. Pankov, E.G. Popova, A. A. Pavlov, V. Rubtzov, and Ya. Davidov

Subjects
Physics, High energy, Cherenkov detector, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Neutrino telescope, High Energy Physics::Phenomenology, FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, Astrophysics, law.invention, law, Extraterrestrial life, ddc:540, Diffuse flux, High Energy Physics::Experiment, Neutrino, Neutrino astronomy
Abstract

We present the results of a search for high energy extraterrestrial neutrinos with the Baikal underwater Cherenkov detector NT200, based on data taken in 1998 - 2002. Upper limits on the diffuse fluxes of $\nu_e+\nu_{\mu}+\nu_{\tau}$, predicted by several models of AGN-like neutrino sources, are derived. For an $E^{-2}$ behavior of the neutrino spectrum, our limit is $E^2 \Phi_{\nu}(E), Comment: 19 pages, 23 figures, submitted to Astroparticle Physics

Published
2005
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