Author/Authors :
Akchurin، نويسنده , , N. and Berntzon، نويسنده , , L. and Cardini، نويسنده , , A. and Ferrari، نويسنده , , R. M. Gaudio، نويسنده , , G. and Hauptman، نويسنده , , J. and Kim، نويسنده , , H. and La Rotonda، نويسنده , , L. and Livan، نويسنده , , M. and Meoni، نويسنده , , E. and Paar، نويسنده , , H. and Penzo، نويسنده , , A. and Pinci، نويسنده , , D. and Policicchio، نويسنده , , A. and Popescu، نويسنده , , S. and Susinno، نويسنده , , G. and Roh، نويسنده , , Y. and Vandelli، نويسنده , , W. and Wigmans، نويسنده , , R.، نويسنده ,
Abstract :
Results are presented of beam tests in which a small electromagnetic calorimeter consisting of lead tungstate crystals was exposed to 50 GeV electrons and pions. This calorimeter was backed up by the DREAM Dual-Readout calorimeter, which measures the scintillation and Cherenkov light produced in the shower development, using two different media. The signals from the crystal calorimeter were analyzed in great detail in an attempt to determine the contributions from these two types of light to the signals, event by event. This information makes it possible to eliminate the dominating source of fluctuations and thus achieve an important improvement in hadronic calorimeter performance.
Keywords :
Calorimetry , Cherenkov light , Lead tungstate crystals , optical fibers
