The HPS electromagnetic calorimeter

Balossino, I. et al. (2017) The HPS electromagnetic calorimeter. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 854, pp. 89-99. (doi: 10.1016/j.nima.2017.02.065)

Abstract

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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: McKinnon, Dr Bryan and Livingston, Dr Kenneth
• Authors: Balossino, I., Baltzell, N., Battaglieri, M., Bondì, M., Buchanan, E., Calvo, D., Celentano, A., Charles, G., Colaneri, L., D'Angelo, A., Napoli, M. D., Vita, R. D., Dupré, R., Egiyan, H., Ehrhart, M., Filippi, A., Garçon, M., Gevorgyan, N., Girod, F.-X., Guidal, M., Holtrop, M., Iurasov, V., Kubarovsky, V., Livingston, K., McCarty, K., McCormick, J., McKinnon, B., Osipenko, M., Paremuzyan, R., Randazzo, N., Rauly, E., Raydo, B., Rindel, E., Rizzo, A., Rosier, P., Sipala, V., Stepanyan, S., Szumila-Vance, H., and Weinstein, L.B.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
• Publisher: Elsevier
• ISSN: 0168-9002
• ISSN (Online): 1872-9576
• Published Online: 22 February 2017
• Copyright Holders: Copyright © 2017 Elsevier
• First Published: First published in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 854:89-99
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher