Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2006-08-29
Physics
High Energy Physics
High Energy Physics - Experiment
Prepared for the proceedings of the Vulcano Workshop 2006 "Frontier Objects in Astrophysics and Particle Physics", F. Giovanne
Scientific paper
The Large Volume Detector (LVD) in the INFN Gran Sasso National Laboratory, Italy, is a $\nu$ observatory mainly designed to study low energy neutrinos from the gravitational collapse of galactic objects. The experiment has been monitoring the Galaxy since June 1992, under increasing larger configurations: in January 2001 it has reached its final active mass M=1 kt. LVD is one of the largest liquid scintillator apparatus in the world for the detection of stellar collapses and, besides SNO, SuperKamiokande and Amanda, it is a charter member of the SNEWS network, that has become fully operational since July 1st, 2005. No gravitational core-collapse has been detected by LVD during 14 years of data acquisition; this allows to put an upper limit of 0.18 events y$^{-1}$ in our galaxy at the 90% C.L. The LVD tracking system allows the detection and the recontruction of the cosmic muon tracks in a large fraction of the whole solid angle, in particular also horizontal tracks can be reconstructed. The results of the muon depth--intensity relation and of the flux of neutrino--induced muons are presented. Moreover, during 2006, the CNGS beam will start its operation: the performances of LVD as a beam monitor are described.
for the LVD Collaboration
Selvi Marco
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