Author/Authors :
Arnaldi، نويسنده , , R. and Chiavassa، نويسنده , , E. and Cicalٍ، نويسنده , , C. and Cortese، نويسنده , , P. and De Falco، نويسنده , , A. and Dellacasa، نويسنده , , G. and De Marco، نويسنده , , Nora N. and Ferretti، نويسنده , , A. and Gallio، نويسنده , , M. and Gemme، نويسنده , , R. and Masoni، نويسنده , , A. and Mereu، نويسنده , , P. and Musso، نويسنده , , A. and Oppedisano، نويسنده , , C. and Piccotti، نويسنده , , A. and Poggio، نويسنده , , F. and Puddu، نويسنده , , G. and Scomparin، نويسنده , , E. and Serci، نويسنده , , S. and Siddi، نويسنده , , E. and Travaglia، نويسنده , , G. and Usai، نويسنده , , G. and Vercellin، نويسنده , , E.، نويسنده ,
Abstract :
In this paper, we present the performance of the Neutron Zero Degree Calorimeter (ZN) for the ALICE experiment. The ZN is a quartz-fiber spaghetti calorimeter, which will measure the energy of the spectator neutrons in heavy ion collisions at the CERN LHC. Its principle of operation is based on the detection of the Cherenkov light produced by the charged particles of the shower in silica optical fibers, embedded in a W-alloy absorber. The detector was tested at CERN SPS using positive hadron and positron beams with momenta ranging from 50 to 150 GeV / c . The response of the calorimeter, the energy resolution, the localizing capability, the signal uniformity and the transverse profile of the detectable hadronic shower are presented.
