The HPS electromagnetic calorimeter
| Autor: | Balossino, Ilaria, Baltzell, Nathan, Battaglieri, Marco, Bondi, Mariangela, Buchanan, Emma, Calvo, Daniela, Celentano, Andrea, Charles, Gabriel, Colaneri, Luca, D'Angelo, Annalisa, De Napoli, Marzio, De Vita, Raffaella, Dupre, Raphael, Egiyan, Hovanes, Ehrhart, Mathieu, Filippi, Alessandra, Garcon, Michel, Gevorgyan, Nerses, Girod, Francois-Xavier, Guidal, Michel, Holtrop, Maurik, Iurasov, Volodymyr, Kubarovsky, Valery, Livingston, Kenneth, McCarty, Kyle, McCormick, Jeremy, McKinnon, Bryan, Osipenko, Mikhail, Paremuzyan, Rafayel, Randazzo, Nunzio, Rauly, Emmanuel, Raydo, Benjamin, Rindel, Emmanuel, Rizzo, Alessandro, Rosier, Philippe, Sipala, Valeria, Stepanyan, Stepan, Szumila-Vance, Holly, Weinstein, Lawrence |
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| Rok vydání: | 2016 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.nima.2017.02.065 |
| Popis: | The Heavy Photon Search experiment (HPS) is searching for a new gauge boson, the so-called "heavy photon." Through its kinetic mixing with the Standard Model photon, this particle could decay into an electron-positron pair. It would then be detectable as a narrow peak in the invariant mass spectrum of such pairs, or, depending on its lifetime, by a decay downstream of the production target. The HPS experiment is installed in Hall-B of Jefferson Lab. This article presents the design and performance of one of the two detectors of the experiment, the electromagnetic calorimeter, during the runs performed in 2015-2016. The calorimeter's main purpose is to provide a fast trigger and reduce the copious background from electromagnetic processes through matching with a tracking detector. The detector is a homogeneous calorimeter, made of 442 lead-tungstate (PbWO4) scintillating crystals, each read out by an avalanche photodiode coupled to a custom trans-impedance amplifier. Comment: 34 pages, 25 figures |
| Databáze: | arXiv |
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