The optical module for the NESTOR neutrino telescope

NESTOR is a deep-sea water Cherenkov neutrino detector now under construction for deployment in the Mediterranean off Greece. Its key component is an optical module employing a photomultiplier tube with a 15 in. hemispherical photocathode in a transparent glass pressure housing. Extensive tests have been made on the sensitivity, uniformity, time resolution, noise rates and mechanical properties of the module: several test deployments have been made at sea

The optical module for the NESTOR neutrino telescope

NESTOR is a deep-sea water Cherenkov neutrino detector now under construction for deployment in the Mediterranean off Greece. Its key component is an optical module employing a photomultiplier tube with a 15 in. hemispherical photocathode in a transparent glass pressure housing. Extensive tests have been made on the sensitivity, uniformity, time resolution, noise rates and mechanical properties of the module: several test deployments have been made at sea. © 2002 Elsevier Science B.V. All rights reserved

A measurement of the cosmic-ray muon flux with a module of the NESTOR neutrino telescope

A module of the NESTOR underwater neutrino telescope was deployed at a depth of 3800 m in order to test the overall detector performance and particularly that of the data acquisition systems. A prolonged period of running under stable operating conditions made it possible to measure the cosmic ray muon flux, I-0 (.) cos(alpha)(theta), as a function of the zenith angle theta. Measured values of index alpha and the vertical intensity I-0 (Graphics) are in good agreement with previous measurements and phenomenological predictions. (c) 2005 Elsevier B.V. All rights reserved

Operation and performance of the NESTOR test detector

NESTOR is a deep-sea neutrino telescope that is under construction in the Ionian Sea off the coast of Greece at a depth of about 4000 m. This paper briefly reviews the detector structure and deployment techniques before describing in detail the calibration and engineering run of a test detector carried out in 2003. The detector was operated for more than I month and data was continuously transmitted to shore via an electro-optical cable laid on the sea floor. The performance of the detector is discussed and analysis of the data obtained shows that the measured cosmic ray muon flux is in good agreement with previous measurements and with phenomenological cosmic ray models. (c) 2005 Published by Elsevier B.V

NESTOR experiment in 2003

NESTOR is a submarine high-energy muon and neutrino telescope, now under construction for deployment in the Mediterranean close to Greek shores. The first floor of NESTOR with 12 optical modules was deployed successfully in March 2003 together with the electronics system. All systems and the associated environmental monitoring units are operating properly and data are being recorded. The status of the NESTOR project is presented. We outline briefly the construction of the deepwater neutrino telescope, properties of the NESTOR site, infrastructure of the project, the deployment of the first floor, and its current operation. The first data are presented and plans for the next steps are summarized. © 2004 MAIK "Nauka/Interperiodica"

KM3NeT: Technical design report.

KM3NeT is a deep‐sea multidisciplinary observatory in the Mediterranean Sea that will provide innovative science opportunities spanning Astroparticle Physics and Earth and Sea Science. This is possible through the synergy created by the use of a common infrastructure allowing for long term continuous operation of a neutrino telescope and marine instrumentation. The present KM3NeT Design Study concludes with this Technical Design Report which develops the ideas put forward in the Conceptual Design Report published in April 2008

KM3NeT. Conceptual Design Report for a Deep-Sea Research Infrastructure Incorporating a Very Large Volume Neutrino Telescope in the Mediterranean Sea

The scientific case for a neutrino telescope of a cubic kilometre scale is overwhelming. The infra‐structure it requires can easily be shared by a host of other, associated, sciences, making long‐term measurements in the area of oceanography, clima‐tology, geophysics, geotechnics and marine bio‐logical sciences possible. This combination of neu‐trino telescope and multidisciplinary undersea ob‐servatory, KM3NeT, is the subject of this Design Report. It summarises goals for the design and the options for its technical implementation