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Neutrino telescope KM3Net: features of the acoustic system

A. A. Brusnitcyn$^1$, E. V. Shirokov$^{1,2}$

Memoirs of the Faculty of Physics 2018. N 2.

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The high energy astronomy studies fundamental questions and also allows to explore galactic and extragalactic objects. KM3NeT is the largest neutrino telescope in the Northern hemisphere being construction. Its intended volume will be 5 km3, with final construction date deemed to be in 2020. The detector is placed in 3500 m depth, 100 km from Capo Passero’s coast and consists of two types of structures: strings and towers. Acoustic positioning of detector structure will be provided by detection of the acoustic signals developed on LongBaseLine, by five fixed acoustic beacons being placed on a seabed. System of the acoustic sensors is used as receivers moving together with a mechanical design of the block of detection. Exact knowledge of speed of distribution of an acoustic wave is required to find the exact position of each detector. Modules finding conductivity, temperature and depth, as well as module for definition salinity of water areinstalled for this purpose. The analysis of data will be carried out in real time. The program for calibration of location of all elements of the detector has been created and tested by this time.

Received: 2018 April 2
Approved: 2018 June 28
PACS:
29.85.Ca Data acquisition and sorting
29.85.Fj Data analysis
Authors
A. A. Brusnitcyn$^1$, E. V. Shirokov$^{1,2}$
$^1$Department of Nuclear Physics, Faculty of Physics, M.V.Lomonosov Moscow State University.\
$^2$D.V. Skobeltsyn Institute of Nuclear Physics, M.V.Lomonosov Moscow State University.
Issue 2, 2018

Moscow University Physics Bulletin

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