Speaker
Dr
Umberto Emanuele
(IFIC)
Description
The ANTARES deep-sea neutrino telescope comprises a three-dimensional array of photomultipliers to detect the Cherenkov light induced by upgoing relativistic charged particles originating from neutrino interactions in the vicinity of the detector. It was completed in May 2008 and is taking data smoothly since then. The large scattering length of light in the deep sea allows for an angular resolution of a few tenths of a degree for neutrino energies exceeding 10 TeV. In order to achieve this optimal performance, the
time calibration procedures should ensure a relative time calibration between the photomultipliers at the level of about 1ns.
The time calibration is performed through different system/procedures: an on-shore calibration in a dark room, the echo-based clock system, the internal LEDs, the Optical Beacons nd the potassium-40 present in the water. In this presentation, the methods developed to attain the needed level of precision and the results obtained with the data taken in-situ will be shown.
Author
Dr
Umberto Emanuele
(IFIC)
