[en] The problem of high energy neutrino detection on the Earth's surface is discussed. The first results of experimental study of ν-induced muons in Cherenkov water detector on the ground level are considered

[en] Baikal-GVD is a cubic kilometer-scale neutrino telescope currently under construction in Lake Baikal. The detector’s components are mobile and may drift from their initial coordinates or change their spatial orientation. This introduces a reconstruction error, particularly a timing error for PMT hits. This problem is mitigated by a combination of a hydroacoustic positioning system and per-component acceleration and orientation sensors. Under regular conditions, the average positioning accuracy for a GVD component is estimated to be less than 13 cm.

[en] The Cherenkov water detector with volume 2000 m³ for registration of ν-induced muons from the bottom hemisphere on the ground level was constructed. First results of muon detection are described. Methods of atmospheric muon flux suppression and possibility to reach the rejection factor necessary for separation of ν-induced muons are discussed. (orig.)

[en] Short communication

[en] The present status of the Baikal Neutrino Experiment and present results of a search for upward going atmospheric neutrinos and magnetic monopoles are reviewed. The results of a search for very high-energy neutrinos and for their fluxes are presented. The strategy of upgrading the detector NT200 to NT200+ and creating a detector on the Gigaton scale at lake Baikal is described

[en] Present status of the Baikal Neutrino Experiment and results of a search for upward going atmospheric neutrinos, WIMPs, and magnetic monopoles obtained with the detector NT-200 are reviewed. The results of a search for very high-energy neutrinos are presented as well. The moderate upgrade of NT-200 planned for the next years and present a possible detector on the Gigaton scare are described

[en] Next generation cubic kilometer scale neutrino telescope Baikal-GVD is currently under construction in Lake Baikal. The detector is specially designed for search for high energies neutrinos whose sources are not yet reliably identified. Since April 2018 the telescope has been successfully operated in complex of three functionally independent clusters i.e. sub-arrays of optical modules (OMs) where now are hosted 864 OMs on 24 vertical strings. Each cluster is connected to shore by individual electro-optical cables. The effective volume of the detector for neutrino initiated cascades of relativistic particles with energy above 100 TeV has been increased up to about 0.15 km³. Preliminary results obtained with data recorded in 2016 and 2017 are discussed.

[en] Lake Baikal in Siberia is one of the most interesting lakes in the world. It is the world’s largest reservoir of fresh surface water and home to several hundred endemic species. At the same time it harboured the first underwater neutrino telescope NT200, now followed by its successor Baikal-GVD, a cubic-kilometre scale neutrino telescope. Within the Baikal Neutrino project a number of methods and instruments have been designed to study various processes in the Baikal ecosystem. Hundreds of optical, acoustic and other sensors allow for long-term 3D monitoring of water parameters like temperature, inherent optical properties or the intensity of water luminescence, as well as processes like sedimentation or deep water renewal. Here we present selected results of the interdisciplinary environmental studies.

[en] Baikal-GVD is a next generation, kilometer-scale neutrino telescope currently under construction in Lake Baikal. GVD is formed by multi-megaton subarrays (clusters) and is designed for the detection of astrophysical neutrino fluxes at energies from a few TeV up to 100 PeV. The design of Baikal-GVD allows one to search for astrophysical neutrinos with flux values measured by IceCube already at early phases of the array construction. We present here preliminary results of the search for high-energy neutrinos via the cascade mode obtained in 2015 and 2016.

[en] Currently in Lake Baikal a new-generation neutrino telescope is being deployed: Baikal-GVD, a deep underwater Cherenkov detector on the cubic-kilometer scale. This paper presents the status of the detector implementation and the first physical results obtained with the existing configuration.