Year: 2019
Type: conference-paper
Abstract: In April 2019, the Baikal-GVD collaboration finished the installation of the fourth and fifth clusters of the neutrino telescope Baikal-GVD. Momentarily, 1440 Optical Modules (OM) are installed in the largest and deepest freshwater lake in the world, Lake Baikal, instrumenting 0.25 km3 of sensitive volume. The Baikal-GVD is thus the largest neutrino telescope on the Northern Hemisphere. The first phase of the detector construction is going to be finished in 2021 with 9 clusters, 2592 OMs in total, however the already installed clusters are stand-alone units which are independently operational and taking data from their commissioning. Huge number of channels as well as strict requirements for the precision of the time and charge calibration (ns, p.e.) make calibration procedures vital and very complex tasks. The inter cluster time calibration is performed with numerous calibration systems. The charge calibration is carried out with a Single Photo-Electron peak. The various data acquired during the last three years in regular and special calibration runs validate successful performance of the calibration systems and of the developed calibration techniques. The precision of the charge calibration has been improved and the time dependence of the obtained calibration parameters have been cross-checked. The multiple calibration sources verified a 1.5 - 2.0 ns precision of the in-situ time calibrations. The time walk effect has been studied in detail with in situ specialized calibration runs.
DOI: 10.22323/1.358.0878
Authors: Lukas Fajt, Zh.-A. M. Dzhilkibaev, M. D. Shelepov, A D Avrorin, A V Avrorin, V M Aynutdinov, R. Bannash, I A Belolaptikov, V B Brudanin, N M Budnev, G V Domogatsky, Rastislav Dvornicky, A A Doroshenko, A N Dyachok, Stanislav Vasilevich Fialkovsky, A R Gafarov, K V Golubkov, N S Gorshkov, T I Gress, R. Ivanov, K G Kebkal, O G Kebkal, E V Khramov, M M Kolbin, K V Konischev, A V Korobchenko, A P Koshechkin, A V Kozhin, M V Kruglov, M K Kryukov, V F Kulepov, M B Milenin, R A Mirgazov, V. Nazari, A I Panfilov, D P Petukhov, E N Pliskovsky, M I Rozanov, E V Rjabov, V D Rushay, G B Safronov, B A Shaybonov, Fedor Šimkovic, A V Skurikhin, A G Solovjev, M N Sorokovikov, Ivan Štekl, E O Sushenok, O V Suvorova, V A Tabolenko, B A Tarashansky, S A Yakovlev
Institutions: Czech Technical University in Prague, Comenius University Bratislava, Russian Academy of Sciences, Institute for Nuclear Research, EvoLogics GmbH (Germany), Joint Institute for Nuclear Research, Irkutsk State University, Nizhny Novgorod State Technical University, Lomonosov Moscow State University, State Marine Technical University of St. Petersburg
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Awards: G4450621668, G5641063287
OpenAlex ID: W3138915760