The MACRO experiment has been running as a supernova neutrino detector since 1989 and is sensitive to the whole galaxy since the beginning of 1992. A galactic supernova would produce some hundreds of v̄e events in the detector. We describe our stellar gravitational collapse online monitors and alarm system, and present the results of a search for neutrino bursts from supernovae during a period of 1.5 yr.
Bibliographical noteFunding Information:
We gratefully acknowledge the support of the director and of the staff of the Laboratori Nazionali de1 Gran Sasso and the invaluable assistanceo f the technical staff of the Institutions participating in the experiment.W e thank the Istituto Nazionale di Fisica Nucleare (INFN), the US Departmento f Energy and the US National Science Foundation for their gener- ous support of the MACRO experiment. We thank INFN, ICTP (Trieste) and NATO for providing fellowships and grants for non-Italian citizens.
- Stellar gravitational collapse