Andrea Molinario (INFN Torino, IFSI-INAF Torino)
The main goal of the Large Volume Detector (LVD),in the INFN Gran Sasso National Laboratory (Italy), is the study of neutrino bursts from gravitational stellar collapses. Both the detector and the data analysis procedure have been optimized for this purpose. The modularity of the apparatus allows to obtain a duty cycle that is very close to 100%, so that the experiment is continuosly monitoring the Galaxy. The analysis is performed online, with the selection of alarms for SNEWS, and offline. In both cases, LVD is able to disentagle a cluster of neutrino signals from the background, and its sensitivity extends to the whole Galaxy. In the lack of a positive detection the 90% c.l. limit to the rate of Supernova collapses in the Galaxy is discussed.