Electron beam test of the large area Mu2e calorimeter prototype

Journal Article · 30 April 2019 · Journal of Physics. Conference Series

DOI: https://doi.org/10.1088/1742-6596/1162/1/012027 · OSTI ID:1523418

Atanov, N. ^[1]; Baranov, V. ^[1]; Budagov, J. ^[1]; Caiulo, D. ^[2]; Cervelli, F. ^[2]; Colao, F. ^[3]; Cordelli, M. ^[3]; Corradi, M. ^[3]; Davydov, Yu. I. ^[1]; Di Falco, S. ^[2]; Diociaiuti, E. ^[4]; Donati, S. ^[5]; Donghia, R. ^[6]; Echenard, B. ^[7]; Giovannella, S. ^[3]; Glagolev, V. ^[1]; Grancagnolo, F. ^[8]; Happacher, F. ^[3]; Hitlin, D. ^[7]; Martini, M. ^[9] ; Miscetti, S. ^[3]; Miyashita, T. ^[7]; Morescalchi, L. ^[2]; Murat, P. ^[10]; Pedreschi, E. ^[2]; Pezzullo, G. ^[11]; Porter, F. ^[7]; Raffaelli, F. ^[2]; Ricci, M. ^[9]; Saputi, A. ^[3]; Sarra, I. ^[3]; Spinella, F. ^[2]; Tassielli, G. ^[8]; Tereshchenko, V. ^[1]; Usubova, Z. ^[1]; Vasilyev, I. I. ^[1]; Zhu, R. Y. ^[7]

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1. Joint Institute for Nuclear Research, Dubna (Russia)
2. INFN Sezione di Pisa, Pisa (Italy)
3. Lab Nazionali di Frascati dell’INFN, Frascati (Italy)
4. Lab Nazionali di Frascati dell’INFN, Frascati (Italy); Univ. Tor Vergata, Rome (Italy)
5. INFN Sezione di Pisa, Pisa (Italy); Dipartimento di Fisica dell’Universit`a di Pisa, Pisa (Italy)
6. Lab Nazionali di Frascati dell’INFN, Frascati (Italy); Univ. Roma Tre, Rome (Italy)
7. California Inst. of Technology (CalTech), Pasadena, CA (United States)
8. INFN Sezione di Lecce, Lecce (Italy)
9. Lab Nazionali di Frascati dell’INFN, Frascati (Italy); Univ. Guglielmo Marconi, Rome (Italy)
10. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
11. Yale Univ., New Haven, CT (United States)

The Mu2e calorimeter consists of 1348 pure CsI crystals coupled to two large area UV-extended Silicon Photomultipliers (SiPMs) organized in two separate annular disks. An intense R&D phase has been pursued to check if this configuration satisfies the Mu2e requirements. In May 2017, a dedicated test has been performed at the Beam Test Facility (BTF) in Frascati (Italy) where the large calorimeter prototype (Module-0) has been exposed to an electron beam in the energy range between 60 and 120 MeV. The prototype consists of 51 crystals, each one readout by two Mu2e SiPMs. We present results for timing and energy resolution both for electrons at normal incidence (0°) and at a grazing impact angle (50°) more similar to the experiment configuration. At 100 MeV, an energy resolution of 5.4% (7.4%) at normal (grazing) incidence has been achieved in good agreement with Monte Carlo expectation. In the same energy range, a time resolution of ~XX ps (~YY ps) has been measured at normal incidence with 1 GHz (250 MHz) sampling rate. Dependence of time and energy resolutions as a function of beam energy and impinging angle are also presented.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Grant/Contract Number: AC02-07CH11359
• OSTI ID: 1523418
• Report Number(s): FERMILAB-CONF-18-766-E; 1733068
• Journal Information: Journal of Physics. Conference Series, Vol. 1162, Issue 1; Conference: 18th International Conference on Calorimetry in Particle Physics, Eugene, OR (United States), 21-25 May 2018; ISSN 1742-6588
• Publisher: IOP PublishingCopyright Statement
• Country of Publication: United States
• Language: English