Author/Authors :
G. and Bergnoli، نويسنده , , A. and Bertolin، نويسنده , , A. and Brugnera، نويسنده , , R. and Carrara، نويسنده , , E. and Candela، نويسنده , , A. BONAMARTINI CORRADI، نويسنده , , G. and Dal Corso، نويسنده , , F. and D’Incecco، نويسنده , , M. and Di Giovanni، نويسنده , , A. and Dusini، نويسنده , , S. and Felici، نويسنده , , G. and Garfagnini، نويسنده , , A. and Gustavino، نويسنده , , C. and Lindozzi، نويسنده , , A. and Longhin، نويسنده , , A. and ، نويسنده ,
Abstract :
OPERA is an underground experiment to search for ντ appearance from a pure νμ beam produced at CERN. To flag the events due to the neutrino interactions with the rock surrounding the OPERA detector, a large VETO system, based on the use of Glass Resistive Plate Chambers (GRPCs) has been realized. We describe the VETO system, the GRPCs, the tests performed on the chambers before their installation. Presently, the VETO is in phase of commissioning. The first results of its underground operation are also presented.
