POZZATO, M.; ACERBI, F.; BALLERINI, G.; BERRA, A.; BONESINI, M.; BRANCA, A.; BRIZZOLARI, C.; BRUNETTI, G.; CALVIANI, M.; CAPELLI, S.; CARTURAN, S.; CATANESI, M.G.; CECCHINI, S.; CHARITONIDIS, N.; CINDOLO, F.; COLLAZUOL, G.; CONTI, E.; DAL CORSO, F.; DELOGU, C.; DE ROSA, G.; FALCONE, A.; GOLA, A.; JOLLET, C.; KAIN, V.; KLICEK, B.; KUDENKO, Y.; LAVEDER, M.; LONGHIN, A.; LUDOVICI, L.; LUTSENKO, E.; MAGALETTI, L.; MANDRIOLI, G.; MARGOTTI, A.; MASCAGNA, V.; MAURI, N.; MEAZZA, L.; MEREGAGLIA, A.; MEZZETTO, M.; NESSI, M.; PAOLONI, A.; PARI, M.; PAROZZI, E.G.; PASQUALINI, L.; PATERNOSTER, G.; PATRIZII, L.; PREST, M.; PUPILLI, F.; RADICIONI, E.; RICCIO, C.; RUGGIERI, A.C.; SCIAN, C.; SIRRI, G.; SOLDANI, M.; STIPCEVIC, M.; TENTI, M.; TERRANOVA, F.; TORTI, M.; VALLAZZA, E.; VELOTTI, F.; VESCO, M.; VOTANO, L.

doi:10.1016/j.nima.2020.164482

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Nucl.Instrum.Meth.A, Nucl.Instrum.Meth.A, 2019-10-02, Bari. 2020, vol. 983, p. 164482

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The goal of the ENUBET project is to demonstrate that a precision of ∼1% on measurement of the absolute neutrino cross section at GeV scale can be achieved by monitoring the positron production in the decay tunnel coming from the three-body semileptonic decays of kaons. The baseline option for the tunnel instrumentation employs a fine-grained shashlik calorimeter with a 4.3 X 0 longitudinal segmentation to separate positrons and pions coming from other decay modes of kaons. The system is complemented by rings of plastic scintillator doublets below the calorimeter acting as a photon veto to suppress the π 0 background and to provide timing informations. SiPMs instrumenting the detector will be exposed to sizeble amounts of neutrons arising in hadronic showers. In order to reproduce such a working environment, SiPMs with different cell size (from 12 to 20 μm ) were irradiated at the INFN-LNL CN Van Der Graaf with neutron fluences up to 2×10 11 n/cm 2 (1 MeV-eq.). The exposed light sensors were characterized in terms of I–V curves at different irradiation levels, and their response tested by exposing a prototype on beam at CERN. In this contribution we will report the results of the described tests on SiPMs, together with the advances in their integration with the ENUBET detectors.< Réduire

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photomultiplier: silicon

neutrino: particle source

calorimeter

scintillation counter: plastics

n: irradiation

monitoring

CERN Lab

performance

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Silicon Photomultipliers for the decay tunnel instrumentation of the ENUBET neutrino beam

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