ANTARES alternative event reconstruction strategies
msra(2007)
摘要
The ANTARES Collaboration is building a high-energy neutrino telescope at
2500 m depth in the Mediterranean Sea. The experiment aims to search for
high-energy cosmic neutrinos through the detection of Cerenkov light induced by
muons and showers resulting from neutrino interactions with the surrounding
medium. The detector will consist of a three-dimensional array of 900 optical
modules housing photomultipliers. It will be composed of 12 strings, 5 of them
being already in operation since January 2007. The muon track is reconstructed
from the arrival time and the charge of the signals obtained from the
photomultipliers, whose positions are known by means of an acoustic positioning
system. The reconstruction strategies include several steps among which there
are: optical background filtering, algorithms for first estimations of the
track parameters, and a final fit aiming to reach an angular resolution better
than 0.3 degree above 10 TeV in the full detector. Different reconstruction
strategies will be presented and their application to the present real data
analysis will be reviewed.
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关键词
three dimensional,optical modulator,data analysis
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