Author/Authors :
Alemi، نويسنده , , A.G. and Bellunato، نويسنده , , T and Braem، نويسنده , , A and Calvi، نويسنده , , M and Chesi، نويسنده , , E and Duane، نويسنده , , A and Joram، نويسنده , , C and Liko، نويسنده , , D and Matteuzzi، نويسنده , , C and Negri، نويسنده , , P and Neufeld، نويسنده , , N and Paganoni، نويسنده , , M and Seguinot، نويسنده , , J and Voillat، نويسنده , , D and Wotton، نويسنده , , S and Ypsilantis، نويسنده , , T، نويسنده ,
Abstract :
We present the results obtained by testing in a beam sample of silica aerogel which is foreseen as one of the radiators for the Ring Imaging Cherenkov counter of LHCb. Pion and proton beams with momenta ranging from 6 to 10 GeV/c traversed different thickness of aerogel. Two large diameter (12 cm) Hybrid Photodiodes with 2048 channels, produced at CERN, were used as photodetectors. The number of photoelectrons and the radius of the Cherenkov rings allowed pion–proton separation over the whole considered momentum range.
Keywords :
Hybrid photodiode , Large hadron collider , rich , Particle identification
