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Aguiló, E.; Ballabriga, R.; Calvo, M.; Garrido, L.; Gascón, D.; Graciani, R.; Graugés, E.; Peralta, D.; Vilasís, X.; Xirgu, X.
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 07/2005, Letnik: 546, Številka: 3Journal Article
The Scintillator Pad Detector (SPD) of the LHCb experiment 1 is positioned just before the preshower subdetector (PS), in front of the electromagnetic calorimeter (ECAL). It has been designed to complete the calorimeter information performing an e / γ identification for the experiment level-0 trigger system. Backscattered particles produced in the PS and the ECAL might introduce inefficiencies in the e / γ separation performed by the SPD. A testbeam with electrons and pions, at different energies, has allowed an experimental study of this effect.
