В статті розглядаються особливості організації науки в Україні в першій половині ХІХ століття. Зокрема, наголошується на особливій ролі у поширенні наукових знань перших українських університетів та ...наукових товариств. Доводиться, що перша половина ХІХ ст. стала періодом вагомих здобутків вітчизняних вчених у природничих науках. Висвітлюються основні досягнення українських вчених в таких науках, як ботаніка, хімія, геологія, фізика, математика та ін.
The Baikal Gigaton Volume Detector (Baikal-GVD) is a km
3
-scale neutrino detector currently under construction in Lake Baikal, Russia. The detector consists of several thousand optical sensors ...arranged on vertical strings, with 36 sensors per string. The strings are grouped into clusters of 8 strings each. Each cluster can operate as a stand-alone neutrino detector. The detector layout is optimized for the measurement of astrophysical neutrinos with energies of
∼
100 TeV and above. Events resulting from charged current interactions of muon (anti-)neutrinos will have a track-like topology in Baikal-GVD. A fast
χ
2
-based reconstruction algorithm has been developed to reconstruct such track-like events. The algorithm has been applied to data collected in 2019 from the first five operational clusters of Baikal-GVD, resulting in observations of both downgoing atmospheric muons and upgoing atmospheric neutrinos. This serves as an important milestone towards experimental validation of the Baikal-GVD design. The analysis is limited to single-cluster data, favoring nearly-vertical tracks.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
A specialist in the field of transport systems must have high educational and professional independence, in the process of his future professional activity, constantly develop his competencies and ...master new ones. In particular, he needs to possess developed research skills, to be ready to solve new problems constantly arising in transport. The article proposes the author's approach to the formation of educational and professional independence of future transport specialists, aimed at the development of research skills. Based on the competence-activity approach, the authors propose a system of work on the formation of a research component in the competences of a future transport specialist as part of the formation of his educational and professional independence. The materials of the article contain a description of the pedagogical experiment and the results of the pedagogical experiment on introducing the proposed ideas into the educational process of the railway university. The study was carried out on the basis of the Federal State Budgetary Educational Institution of Higher Education "Irkutsk State University of Railways".
The Gigaton Volume Detector in Lake Baikal Avrorin, A.; Aynutdinov, V.; Belolaptikov, I. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
05/2011, Letnik:
639, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The objective of the Baikal Project is the creation of a kilometer-scale high-energy neutrino observatory: the Gigaton Volume Detector (GVD) in Lake Baikal. Basic elements of the GVD – new optical ...modules, FADC readout units, and underwater communication systems – were investigated and tested in Lake Baikal with prototype strings in 2008–2010. We describe the results of prototype strings operation and review the preliminary design and expected sensitivity of the GVD telescope.
The Baikal neutrino experiment Avrorin, A.; Aynutdinov, V.; Balkanov, V. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
01/2011, Letnik:
626
Journal Article
Recenzirano
Odprti dostop
We review the status of the Lake Baikal Neutrino Experiment. Preparation towards a km
3-scale Gigaton Volume Detector (GVD) in Lake Baikal is currently a central activity. As an important milestone, ...a km
3-prototype string comprising of 12 optical modules and based on a completely new technology, has been installed and was put in operation together with NT200+ in April, 2009. We also present recent results from the long-term operation of NT200, including an improved limit on the diffuse astrophysical neutrino flux.
The operation of large underwater neutrino telescopes requires the precise knowledge of the water parameters governing light absorption and scattering, as well as a continuous monitoring of these ...parameters. For this purpose, a stationary underwater device, ASP-15, has been developed by the Baikal collaboration. We describe the basic assumptions and formulae behind ASP-15, the methods how absorption length, scattering length and phase functions are determined, the design of the device, and give some results obtained over many years of operation in conjuction with the Baikal telescope NT200.
In the article features of the organization of science in Ukraine in the first half of the 19th century are considered. In particular, it points to a special role in the dissemination of scientific ...knowledge of the first Ukrainian universities and scientific societies. It is proved that the first half of the 19th century became a period of significant achievements of scientists in the natural sciences. The main achievements of Ukrainian scientists in such sciences as botany, chemistry, geology, physics, mathematics and others are covered.
Tunka-133: Results of 3 year operation Prosin, V.V.; Berezhnev, S.F.; Budnev, N.M. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
08/2014, Letnik:
756
Journal Article
Recenzirano
Odprti dostop
The EAS Cherenkov light array Tunka-133, with ~3km2 geometric area, is taking data since 2009. The array permits a detailed study of cosmic ray energy spectrum and mass composition in the PeV energy ...range. After a short description of the methods of EAS parameter reconstruction, we present the all-particle energy spectrum and results of studying CR composition, based on 3 seasons of array operation. In the last part of the paper, we discuss possible interpretations of the obtained results.
We present a current status of the Baikal-GVD Project. The objective of this project is a construction of a km3-scale neutrino telescope in the Baikal lake. Set of prototype arrays which were ...installed and operated during 2009-2011 in Lake Baikal allowed to study all basic elements of the future full detector and to finalize the GVD technical design. We discuss the configuration and the design of the engineering arrays as well as DAQ performance and the preliminary results.
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