Time, position and orientation calibration using atmospheric muons in KM3NeT
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F24%3A00389354" target="_blank" >RIV/68407700:21670/24:00389354 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.22323/1.444.0218" target="_blank" >https://doi.org/10.22323/1.444.0218</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22323/1.444.0218" target="_blank" >10.22323/1.444.0218</a>
Alternative languages
Result language
angličtina
Original language name
Time, position and orientation calibration using atmospheric muons in KM3NeT
Original language description
The KM3NeT collaboration operates two Cherenkov neutrino telescopes in the deep Mediterranean sea, ORCA and ARCA. Both detectors consist of an array of light-sensitive detectors called Digital Optical Modules (DOMs) assembled along vertical strings anchored to the seafloor. Although the abundant muon flux from cosmic ray air showers is a background for the main scientific objectives of KM3NeT/ORCA and KM3NeT/ARCA, it can be exploited in various ways for calibration purposes. In this contribution, the methods implemented within the KM3NeT calibration workflow which exploit the muon track reconstruction are presented. For the latter, a likelihood fit of a track hypothesis to a set of observed hits on the DOMs is performed. For calibration purposes, the optimal position, time reference and orientation of each string of the detector can be found as the parameters maximizing the overall likelihood of reconstructed muon tracks. The muon track quality method is shown to reach the desired accuracy in time and position, allowing for the determination of the relative time offsets between strings. It also represents an important tool to cross-check position and orientation calibrations obtained by other means. Another muon-based calibration method is used to determine the relative time offsets between DOMs. It is based on the evaluation of the difference between the measured hit time and the one predicted from the fitted muon track’s position.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/LM2023063" target="_blank" >LM2023063: Laboratoire Souterrain de Modane – participation of the Czech Republic</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
38th International Cosmic Ray Conference (ICRC2023)
ISBN
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ISSN
1824-8039
e-ISSN
1824-8039
Number of pages
10
Pages from-to
1-10
Publisher name
PoS - Proceedings of Science, Sissa Medialab srl
Place of publication
Trieste
Event location
Nagoya
Event date
Jul 26, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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