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1. Problems of modern diagnostics of choledocholithiasis

Author

S. G. Shapoval’yants, T. B. Ardasenov, D. A. Freydovich, A. G. Mylnikov, A. G. Pan’kov, S. A. Budzinsky, and A. A. Nikonov

Subjects
choledocholithiasis, obstructive jaundice, risk factors of choledocholithiasis, Diseases of the digestive system. Gastroenterology, RC799-869
Abstract

The aim of review. To discuss issues of diagnostics of choledocholithiasis at the present time.Original positions. The relevance of early recognition of choledocholithiasis is determined by high frequency at patients with cholelithiasis and risk of development of life-threatening complications. Diagnostics of choledocholithiasis is based on clinical data, laboratory and instrumental tests. Instrumental methods of investigation differ by their information value and invasiveness. So, it is important to define prognostic criteria (clinical, biochemical and ultrasound), determining necessity of additional more invasive and expensive investigation of bile ducts. However estimation of diagnostic criteria suggested by different authors and their threshold values is ambiguous. Discordant opinions frequently lead both to underestimation of the role of clinical and laboratory data, and to unjustified application of invasive diagnostic methods.Conclusion. Further studies are necessary to develop more rational and objective systems of diagnostics of choledocholithiasis.

Published
2011

2. A hydroacoustic positioning system for the experimental cluster of the cubic-kilometer-scale neutrino telescope at Lake Baikal

Author

A. I. Panfilov, M.I. Rozanov, V. Karnaukhov, O. N. Gaponenko, A. A. Perevalov, D.A. Kuleshov, F.K. Koshel, I. A. Danilchenko, D. P. Petukhov, S. G. Yakovlev, A. V. Skurikhin, V. A. Poleschuk, A.V. Korobchenko, B.A. Tarashansky, V.F. Kulepov, D.Yu. Bogorodsky, V. I. Dobrynin, R. Bannasch, V. A. Kozhin, S.V. Fialkovsky, A. A. Doroshenko, A. G. Kebkal, B. A. Shaibonov, Zh.-A.M. Dzhilkibaev, T. I. Gress, A. A. Sheifler, A.V. Avrorin, E. A. Osipova, V. A. Zhukov, G.V. Domogatsky, Olga Suvorova, R. R. Mirgazov, M.B. Milenin, V. M. Aynutdinov, L. V. Pankov, E.N. Pliskovsky, A. M. Klabukov, K.V. Konischev, V.B. Brudanin, L. A. Kuzmichev, V. Yu. Rubtzov, A. N. Dyachok, E. V. Ryabov, I. A. Belolaptikov, Konstantin Kebkal, A.P. Koshechkin, Aleksandr Gafarov, A. V. Zagorodnikov, G. Pan'kov, Valery Zurbanov, V. I. Lyashuk, N. M. Budnev, and K.V. Golubkov

Subjects
Physics, Photomultiplier, Positioning system, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Scale (descriptive set theory), Field tests, law.invention, Telescope, Neutrino detector, law, Cluster (physics), Instrumentation, Remote sensing
Abstract

The NT1000 deep-water neutrino telescope with an effective volume of ∼2 km3 is currently being developed at Lake Baikal by the BAIKAL collaboration. The telescope will be composed of functionally independent setups—clusters of strings of optical modules based on photomultiplier tubes (with eight strings in each cluster). Since 2011, field tests of the basic elements and systems of the future telescope included in autonomous measuring complexes—prototypes of the NT1000 cluster—have been performed at Lake Baikal. The basic elements and the layout of one of the currently considered versions of the acoustic positioning system for the NT1000 telescope are described, and results of tests of the system prototype included as a component in the experimental cluster of the year 2012 are presented.

Published
2013
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3. High energy neutrino acoustic detection activities in Lake Baikal: Status and results

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Astrophysics::Instrumentation and Methods for Astrophysics, Geophysics, Astrophysics, Solar neutrino problem, Noise, Neutrino detector, Computer Science::Sound, Measurements of neutrino speed, Neutrino, Underwater, Neutrino astronomy, Instrumentation
Abstract

We review the status of high-energy acoustic neutrino detection activities in Lake Baikal. The Baikal collaboration constructed a hydro-acoustic device which may be regarded as a prototype subunit for a future underwater acoustic neutrino telescope. The device is capable of common operation with the Baikal neutrino telescope NT200+, and is operating at a depth of about 150 m on the “NT200+ instrumentation string”. Our measurements show that the integral noise power in the frequency band 20–40 kHz can reach levels as low as about 1 mPa, i.e. one of the lowest noise levels measured at the currently considered acoustic neutrino sites. At the same time, short acoustic pulses with different amplitudes and shapes have been observed. Low sound absorption in Baikal freshwater and absence of strong acoustic noise sources do motivate further activities towards a large-scale acoustic neutrino detector in Lake Baikal.

Published
2009
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4. The BAIKAL neutrino experiment—Physics results and perspectives

Author

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

Subjects
Astroparticle physics, Physics, Nuclear and High Energy Physics, Solar neutrino, Astrophysics (astro-ph), Detector, Neutrino telescope, FOS: Physical sciences, Astronomy, Solar neutrino problem, Astrophysics, Neutrino detector, ddc:530, Neutrino, Neutrino astronomy, Instrumentation
Abstract

We review the status of the Lake Baikal Neutrino Experiment. The Neutrino Telescope NT200 has been operating since 1998 and has been upgraded to the 10 Mton detector NT200+ in 2005. We present selected astroparticle physics results from long-term operation of NT200. Also discussed are activities towards acoustic detection of UHE-energy neutrinos, and results of associated science activities. Preparation towards a km3-scale (Gigaton volume) detector in Lake Baikal is currently a central activity. As an important milestone, a km3-prototype string, based on completely new technology, has been installed and is operating together with NT200+ since April, 2008., Comment: 8 pages, 12 figures; presented at VLVNT08 (Very Large Volume Neutrino Telescope) Workshop, Toulon, France, April, 2008; to appear in NIM-A

Published
2009
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5. Baikal neutrino telescope—An underwater laboratory for astroparticle physics and environmental studies

Author

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

Subjects
Astroparticle physics, Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Solar neutrino problem, Physics::Geophysics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Underwater, Neutrino, Neutrino astronomy, Instrumentation
Abstract

We review the status of the Baikal Neutrino Experiment. The Neutrino Telescope NT200 is operating in Lake Baikal since 1998 and has been upgraded to the 10 Mton detector NT200+ in 2005. We present selected results concerning astroparticle physics as well as results of environmental studies. We describe the strategy of creating a Gigaton (km3) scale neutrino detector at Lake Baikal. First steps of activities towards a km3 Baikal neutrino telescope, including the development of acoustic high energy neutrino detection method are discussed.

Published
2009
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6. Search for relativistic magnetic monopoles with the Baikal neutrino telescope

Author

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

Subjects
Astrophysics::High Energy Astrophysical Phenomena, ddc:540, Astronomy and Astrophysics
Published
2008
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7. Baikal neutrino telescope: Status, results, and prospects of development

Author

E. A. Osipova, O. N. Gaponenko, K. V. Konishchev, D. P. Petukhov, I. A. Belolaptikov, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, L. A. Kuzmichev, V. V. Prosin, V. A. Balkanov, E.G. Popova, T. Mikolaiskii, I. V. Yashin, V. Poleshchuk, A. I. Panfilov, K. Antipin, M.I. Rozanov, V. Yu. Rubtsov, E. N. Pliskovskii, D. A. Borshchev, O. A. Gress, A. M. Klabukov, S. V. Fialkovskii, S. P. Mikheev, A. P. D’yachok, M.B. Milenin, V.F. Kulepov, N. M. Budnev, B. Shaibonov, R. Vishnevskii, G. Pan'kov, O. I. Grishin, A. Kochanov, R. R. Mirgazov, A.P. Koshechkin, Yu. A. Semenei, T. I. Gress, G. V. Domogatskii, E. Middel, I. A. Danilchenko, A. V. Shirokov, P. G. Pokhil, A.A. Sheifler, V. M. Ainutdinov, K. Spiring, K.V. Golubkov, R. V. Vasil’ev, V. A. Zhukov, L. V. Pankov, B. A. Tarashchanskii, and A. I. Klimov

Subjects
Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, General Physics and Astronomy, Astrophysics, Solar neutrino problem, Neutrino detector, Weakly interacting massive particles, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino astronomy, Neutrino oscillation
Abstract

The main physical results obtained with the Baikal neutrino telescope NT200 during the period 1998–2003 are reviewed: the limits for the diffuse flux of high-energy neutrinos, high-energy muons, and magnetic monopoles and the results of search for neutrinos from the center of the Earth due to annihilation of weakly interacting massive particles and from local neutrino sources. In April, 2005, the neutrino telescope NT200 was extended by introduction of three new strings, located at a distance of 100 m from the NT200 center. The new deep-water complex NT200+ has an effective volume for detecting cascades from high-energy neutrinos larger than that of NT200 by a factor of 4. At a cascade energy of 10 PeV, the effective volume of the new complex is 107 m3. Further development of the Baikal neutrino experiment is related to the design and fabrication of a detector with a volume of about 1 km3.

Published
2007
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8. The Baikal Neutrino experiment: NT200+ and beyond

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, Solar neutrino problem, law.invention, Telescope, Neutrino detector, law, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino astronomy, Neutrino oscillation, Instrumentation
Abstract

The 10 Mton scale Neutrino telescope NT 200 + is operating in Lake Baikal since April, 2005. It's main physics goal is the detection of high energy neutrino cascades in the 10 2 – 10 5 TeV energy range. The NT 200 + sensitivity to astrophysical diffuse neutrinos is four times that of it's predecessor NT200 the telescope that has been operating since 1998, yielding a variety of physics results. A km-scale (Gigaton Volume) Neutrino telescope in Lake Baikal is planned, the R&D phase has started in 2006. We give the basic layout of this Baikal km3-detector, which will be made of building blocks similar to NT 200 + .

Published
2007
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9. The BAIKAL neutrino experiment: From NT200 to NT200+

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy, Solar neutrino problem, Astrophysics, law.invention, Telescope, Neutrino detector, law, Measurements of neutrino speed, ddc:530, High Energy Physics::Experiment, Neutrino, Neutrino astronomy, Neutrino oscillation, Instrumentation
Abstract

The Baikal neutrino telescope NT200 takes data since 1998. In 2005, the deployment of three additional strings for common operation with NT200 was finished. We describe the physics program and the design of the new telescope named NT200+ and present selected physical results obtained with NT200. First results from NT200+ will be presented at the conference., Comment: 4 pages, 5 figures, Proceedings of 29th International Cosmic Ray Conference (ICRC) 2005, Pune, India

Published
2006
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10. BAIKAL experiment: Main results obtained with the neutrino telescope NT200

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Solar neutrino, Astrophysics (astro-ph), Neutrino telescope, FOS: Physical sciences, Astronomy, Astrophysics, Solar neutrino problem, Particle detector, Neutrino detector, ddc:530, Neutrino astronomy, Neutrino, Instrumentation, Lepton
Abstract

The Baikal Neutrino Telescope NT200 takes data since April 1998. On April 9th, 2005, the 10 Mton scale detector NT200$+$ was put into operation in Lake Baikal. Selected results obtained during 1998-2002 with the neutrino telescope NT200 are presented., 6 pages, 7 figures, presented at 2nd VLVNT Workshop on Very Large Volume Neutrino Telescope (VLVNT2), Catania, Italy, 8-11 Nov. 2005

Published
2006
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11. Hydroacoustic coordinate-measuring system of the NT-200 Baikal neutrino telescope

Author

O. A. Gress, S. I. Polityko, V.F. Kulepov, A. A. Doroshenko, Zh.-A.M. Dzhilkibaev, V. V. Prosin, A. N. Dyachok, S. A. Nikiforov, M.B. Milenin, N. I. Moseiko, Dmitry Chernov, A. I. Panfilov, Ch. Spiering, A. V. Rzhetsichkii, I. A. Danilchenko, V. A. Balkanov, E.G. Popova, Yu. V. Parfenov, I. A. Belolaptikov, G. V. Domogatskii, E. Vyatchin, B. A. M. Shaibonov, Bayarto Lubsandorzhiev, M.I. Rozanov, A. G. Chenskii, A. A. Pavlov, V. Poleshchuk, E. A. Osipova, S. V. Lovtsov, A.P. Koshechkin, T. Mikolajski, Yu. A. Semenei, V. A. Primin, N. M. Budnev, L. V. Pankov, B. A. Tarashchanskii, A. I. Klimov, K. V. Konishchev, A. M. Klabukov, Alexander Moroz, L. B. Bezrukov, V. E. Kuznetsov, L. A. Kuzmichev, R. Wischnewski, E. N. Pliskovskii, O. N. Gaponenko, Yu. B. Lanin, S. V. Fialkovskii, S. P. Mikheev, V. M. Ainutdinov, E. O. Kozakov, V. A. Zhukov, I. V. Yashin, P. G. Pokhil, Valery Zurbanov, V. Yu. Rubtsov, T. I. Gress, R. V. Vasil’ev, S. I. Klimushin, G. Pan'kov, and R. R. Mirgazov

Subjects
Physics, Observational error, Acoustics and Ultrasonics, Neutrino telescope, Mode (statistics), Astronomy, Ranging, Remote sensing
Abstract

The hydroacoustic coordinate-measuring system of the NT-200 Baikal neutrino telescope is described. It is a ranging long-base hydroacoustic system constantly operating in an automated or interactive mode and capable of measuring the coordinates of the detecting modules of the NT-200 to within 20 cm. Special attention is given to the justification of the estimate of the coordinate measurement errors. As an illustration, some results of measuring the coordinates of the elements of the NT-200 and the hydrophysical characteristics of lake Baikal are presented.

Published
2005
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12. The BAIKAL neutrino project: status, results and perspectives

Author

Zh.-A.M. Dzhilkibaev, V. V. Prosin, A.G. Chensky, E. A. Osipova, Dmitry Chernov, V. M. Aynutdinov, A.P. Koshechkin, B.A. Tarashansky, P. G. Pokhil, R. R. Mirgazov, A. N. Dyachok, K. Kazakov, E. Vyatchin, S.V. Fialkovsky, I. I. Yashin, Ch. Spiering, N. M. Budnev, T. I. Gress, V. A. Zhukov, M.B. Milenin, B. A. M. Shaibonov, I. A. Danilchenko, V. Rubtzov, E.N. Pliskovsky, A. M. Klabukov, A. I. Klimov, BayarJon Paul Lubsandorzhiev, L. V. Pankov, O. A. Gress, G.V. Domogatsky, A. A. Pavlov, A. I. Panfilov, V.F. Kulepov, V. Polecshuk, Ole Streicher, G. Pan'kov, L. A. Kuzmichev, S. Mikheyev, R. Vasiliev, Yu. V. Parfenov, K.V. Konischev, Yu. A. Semeney, L. B. Bezrukov, V.A. Balkanov, S. I. Klimushin, M. I. Rosanov, R. Wischnewski, I. A. Belolaptikov, Vy. Kuznetzov, O. N. Gaponenko, and E.G. Popova

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Upgrade, Scale (ratio), Detector, Neutrino, Atomic and Molecular Physics, and Optics
Abstract

We review the present status of the Baikal Neutrino Project and present selected results obtained from data taken in 1998 - 2000 (780 live days). We describe the moderate upgrade of NT-200 planned for the next years and discuss a possible detector on the Gigaton scale.

Published
2005
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13. Status of the Baikal neutrino project

Author

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

Subjects
Physics, Nuclear physics, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Hadron, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Flux, High Energy Physics::Experiment, Neutrino, Charged current
Abstract

The status of the Baikal neutrino experiment is briefly reviewed and the results of the search for the natural flux of high-energy neutrinos are reported.

Published
2009
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14. Physics Results from the Baikal Neutrino Telescope

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics, Atomic and Molecular Physics, and Optics, Physics::Geophysics, law.invention, Telescope, law, ddc:530, High Energy Physics::Experiment
Abstract

The Baikal neutrino telescope NT200 is in operation since April, 1998. We present physics results obtained with this detector during 1998–2002. Since April 2005, the upgraded 10-Mton scale telescope NT200+ is operating. For a km3-scale neutrino telescope in Lake Baikal, the R&D phase has started in 2006.

Published
2007
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15. [Recurrent choledocholithiasis. Diagnosis, prevention and treatment]

Author

S G, Shapoval'iants, A G, Myl'nikov, A G, Pan'kov, A A, Nikonov, T B, Ardasenov, and V S, Veselova

Subjects
Adult, Aged, 80 and over, Cholangiopancreatography, Endoscopic Retrograde, Common Bile Duct, Male, Time Factors, Middle Aged, Sphincterotomy, Endoscopic, Choledocholithiasis, Treatment Outcome, Secondary Prevention, Drainage, Humans, Cholecystectomy, Female, Aged, Follow-Up Studies, Retrospective Studies
Abstract

For the period of 6 years we have 110 patients with recurrent bile duct stones (BDS). Were evaluated the changes of the bile duct and bile papilla (BP), predisposing to the recurrence of BDS; the causes of recurrent BDS after endoscopic papillosphincterotomy (EPST). To improve the treatment results in patients with recurrent BDS is necessary: at the primary operation to estimate the changes of the BP and periampulyarnuyu area, in patients with completed EPST to prescribe litolitic therapy; in patients with a complex BDS after unsuccessful attempt of EPST to do holedoholitotomy with a blind stitch or in combination with the drainage of Pikovsky.

Published
2013

16. Second bogolyubov theorem for systems of difference equations

Author

V. Ya. Danilov, D. I. Martynyuk, and V. G. Pan’kov

Subjects
Algebra, Condensed Matter::Other, Differential equation, General Mathematics, Nuclear Theory, Mathematical analysis, System of difference equations, Physics::Atomic Physics, Algebra over a field, Mathematics
Abstract

We establish an analog of the second Bogolyubov theorem for a system of difference equations.

Published
1996
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18. [The enteral tube feeding and selective intestinal decontamination for the treatment of the acute pancreatitis]

Author

A G, Myl'nikov, S G, Shapoval'iants, A G, Pan'kov, and S V, Korolev

Subjects
Adult, Aged, 80 and over, Intestines, Male, Young Adult, Enteral Nutrition, Pancreatitis, Acute Disease, Humans, Female, Middle Aged, Aged
Abstract

The treatment results of 174 patients with the acute pancreatitis were analyzed. 51 (29.5%) patients were on total parenteral feeding (the 1st group); 93 (53%) patients received the early enteral feeding through the nasoenteral tube (the 2nd group); 30 (17.5%) patients received the enteral feeding together with the selective intestinal decontamination ( the 3rd group). The combination of enteral feeding together with the selective intestinal decontamination proved to have the positive influence and prevent the infectious complications of the acute pancreatits. Therefore, they should be used in the treatment of such patients.

Published
2012

19. [Unsolved questions of treatment of choledocholithiasis]

Author

S G, Shapoval'iynts, T B, Ardasenov, A G, Pan'kov, A G, Myl'nikov, S A, Budzinskiĭ, and A A, Nikonov

Subjects
Cholangiopancreatography, Endoscopic Retrograde, Common Bile Duct, Biliary Tract Surgical Procedures, Choledocholithiasis, Drug Therapy, Recurrence, Risk Factors, Lithotripsy, Drainage, Humans, Prognosis
Published
2012

20. [The surgical tactics of treatment of the choledocholithiasis, complicated by the obstructive jaundice, in patients with the altered bilioduodenal anatomy]

Author

S G, Shapoval'iants, T B, Ardasenov, E D, Fedorov, A G, Myl'nikov, A G, Pan'kov, S A, Budzinskiĭ, E V, Ivanova, and A N, Bachurin

Subjects
Aged, 80 and over, Male, Palliative Care, Bile Duct Diseases, Constriction, Pathologic, Middle Aged, Decompression, Surgical, Jaundice, Obstructive, Choledocholithiasis, Postoperative Complications, Treatment Outcome, Humans, Female, Stents, Duodenal Diseases, Digestive System Surgical Procedures, Aged
Abstract

The treatment results of 69 patients with the altered bilioduodenal anatomy and choledocholithiasis, complicated by the obstructive jaundice, were analyzed. The anatomic changes were determined by the previous gastric resection or gastrectomy, biliodigestive anastomosis, bile duct strictures, pyloric stenosis, duodenal diverticulum or the Mirizzi syndrome. The surgical approach depended on the type and extent of anatomic changes. The endoscopic common bile duct decompression was possible in 82,6% of patients. The endoscopic bile duct stone removal was achieved only in 44,9% of patients, the other 8,7% with non-removable stones had the endoscopic bile duct stenting as a means of palliative surgery. Percutaneous transhepatic lithoextraction was performed in 1,5% of cases. The differential approach provided the decrease of postoperative complication rate and lethality to 14,5 and 2,9%, respectively.

Published
2012

21. [Clinico-morphological characteristics of major duodenal papilla benign neoformations of patients with postcholecystectomy syndrome]

Author

L M, Mikhaleva, S G, Shapoval'iants, N A, Gracheva, S Iu, Orlov, A G, Pan'kov, S A, Budzinskiĭ, E N, Orlova, and T B, Adrasenov

Subjects
Adult, Aged, 80 and over, Male, Ampulla of Vater, Common Bile Duct Neoplasms, Humans, Intestinal Polyps, Female, Middle Aged, Postcholecystectomy Syndrome, Aged
Abstract

The article is devoted to a problem of diagnosis and treatment of postcholecystectomy syndrome caused by benign neoformations of the major duodenal papilla. The material of study was formed by 76 patients; among them 53 ones had isolated benign neoformations of the major duodenal papilla. The medical-diagnostic algorithm applied by authors for the examination of patients with postcholecystectomy syndrome is presented. It's been defined, that benign neoformations of the major duodenal papilla take an essential place in the structure of postcholecystectomy syndrome and make 13.5% of the reasons of its occurrence. Thus, the most widespread morphological substratum of these benign neoformations is the hyperplastic polyp.

Published
2012

22. 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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23. 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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24. 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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25. 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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26. A DEVICE FOR DETECTION OF ACOUSTIC SIGNALS FROM SUPER HIGH ENERGY NEUTRINOS

Author

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

Subjects
Physics, Nuclear and High Energy Physics, High energy, High energy particle, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, High Energy Physics::Experiment, ddc:530, Neutrino
Abstract

We present the design of a device for detection of acoustic signals from high energy particle showers. The module will be stationary installed above the Baikal Neutrino Telescope NT-200+.

Published
2006
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27. 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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28. 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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29. 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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30. 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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31. 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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32. [The use of decompressive endoscopic operations in the complicated course of cholelithiasis]

Author

Iu M, Pantsyrev, A Iu, Konovalov, A G, Pan'kov, and A A, Budzinskiĭ

Subjects
Male, Cholestasis, Middle Aged, Peritonitis, Sphincterotomy, Endoscopic, Postoperative Complications, Pancreatitis, Cholelithiasis, Acute Disease, Cholecystitis, Humans, Female, Cholecystostomy, Aged
Abstract

The article is based on an analysis of observation of 853 patients with complicated forms of cholelithiasis. The average age of patients was 73.5 years, two thirds of them had critical coexistent diseases. The system of treatment proposed by the authors allowed achievement of good results (lethality is less than 5%) while the methods of treatment generally accepted in surgical practice is followed by higher lethality achieving 40%. The work analyzes errors and complications of endoscopic decompressing operations and gives recommendations for their prevention.

Published
1992

35. The Baikal Neutrino project: Status and perspectives

Author

K.V. Konischev, I. A. Belolaptikov, Yu. A. Semeney, R. Vasiliev, V.A. Balkanov, A. N. Dyachok, Ole Streicher, Yu. V. Parfenov, Vy. Kuznetzov, Dmitry Chernov, R. R. Mirgazov, V. M. Aynutdinov, L. B. Bezrukov, O. A. Gress, V.F. Kulepov, V. A. Zhukov, N. I. Moseiko, A.P. Koshechkin, E. Vyatchin, B. A. M. Shaibonov, L. V. Pankov, V. Rubtzov, E. Popova, E.N. Pliskovsky, G.V. Domogatsky, A. M. Klabukov, M.B. Milenin, M. I. Rosanov, BayarJon Paul Lubsandorzhiev, R. Wischnewski, A. A. Pavlov, A. I. Klimov, E. A. Osipova, N. M. Budnev, V. Polecshuk, O. N. Gaponenko, A.G. Chensky, S. I. Klimushin, Ch. Spiering, A. I. Panfilov, I. I. Yashin, I. A. Danilchenko, G. Pan'kov, T. I. Gress, P. G. Pokhil, B. Tarashanky, L. A. Kuzmichev, Zh.-A.M. Dzhilkibaev, V. V. Prosin, and S. Mikheyev

Subjects
Physics, High energy, Particle physics, Range (particle radiation), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino telescope, Diffuse flux, Magnetic monopole, High Energy Physics::Experiment, Atmospheric neutrino, Neutrino, Neutrino oscillation
Abstract

We review the present status of the Baikal Neutrino Project and present results of a search for upward going atmospheric neutrinos, WIMPs and magnetic monopoles obtained with the detector NT-200. Also, the results of a search for very high energy neutrinos are presented. An upper limit on the v e+v μ+v T neutrino diffuse flux of E 2 · F(E) < 1.3 · 10 -6 cm-2 s-1 sr-1 GeV within a neutrino energy range 104 ÷ 107 GeV is obtained, assuming an E -2 behaviour of the neutrino spectrum and flavor ratio v e+v μ+v T = 1: 1: 1- We describe the moderate upgrade of NT-200 planned for the next years and discuss a possible detector on the Gigaton scale.

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