Speaker
Harold Yepes Ramirez
(IFIC-ANTARES)
Description
ANTARES is a neutrino detector based on a three dimensional grid of photomultipliers tubes (PMTs) arranged in several detection lines anchored to the seabed at 2.5 km of deep into the Mediterranean Sea (40 km o of the Toulon coast in France), being its main goal the reconstruction and identication of high energy neutrinos from extra-terrestrial origin. The PMTs collect the Cherenkov light induced by relativistic charged leptons produced by the interaction of neutrinos with the detector surroundings. Light propagation strongly depends on the optical properties of the sea water, being crucial their understanding in order to get the expected detector performance. To reach the ANTARES physics goals, a good time and positioning calibration systems are required. In this sense, several devices have been implemented being possible to achieve their expected time and space resolution.
The ANTARES Optical Beacon system consists of a set of pulsed light sources strategically located throughout the detector mainly used for time calibration but which can also be used as a tool to study the water optical properties and their stability. In this contribution we will present the current status of our measurements of light velocity and transmission length of light carried out between 2008 and 2011. A water model proposal at different wavelengths will be discussed, supported by some preliminary results on its impact on track reconstruction.
Primary author
Harold Yepes Ramirez
(IFIC-ANTARES)
Peer reviewing
Paper
Paper files:
