Design, status and perspective of the Mu2e crystal calorimeter

N. Atanov; V. Baranov; J. Budagov; F. Cervelli; F. Colao; E. Diociaiuti; M. Cordelli; G. Corradi; E. Danè; Yu. Davydov; S. Donati; R. Donghia; S. Di Falco; B. Echenard; L. Morescalchi; S. Giovannella; V. Glagolev; F. Grancagnolo; F. Happacher; D. Hitlin; M. Martini; S. Miscetti; T. Miyashita; P. Murat; E. Pedreschi; G. Pezzullo; F. Porter; F. Raffaelli; M. Ricci; A. Saputi; I. Sarra; F. Spinella; G. Tassielli; V. Tereshchenko; R. Y. Zhu

arXiv · 1801.03159

Design, status and perspective of the Mu2e crystal calorimeter

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Abstract

The Mu2e experiment at Fermilab will search for the charged lepton flavor violating process of neutrino-less $\mu \to e$ coherent conversion in the field of an aluminum nucleus. Mu2e will reach a single event sensitivity of about $2.5\cdot 10^{-17}$ that corresponds to four orders of magnitude improvements with respect to the current best limit. The detector system consists of a straw tube tracker and a crystal calorimeter made of undoped CsI coupled with Silicon Photomultipliers. The calorimeter was designed to be operable in a harsh environment where about 10 krad/year will be delivered in the hottest region and work in presence of 1 T magnetic field. The calorimeter role is to perform $\mu$/e separation to suppress cosmic muons mimiking the signal, while providing a high level trigger and a seeding the track search in the tracker. In this paper we present the calorimeter design and the latest R$\&$D results.

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N. Atanov, V. Baranov, J. Budagov, F. Cervelli, F. Colao, E. Diociaiuti, M. Cordelli, G. Corradi, E. Danè, Yu. Davydov, S. Donati, R. Donghia, S. Di Falco, B. Echenard, L. Morescalchi, S. Giovannella, V. Glagolev, F. Grancagnolo, F. Happacher, D. Hitlin, M. Martini, S. Miscetti, T. Miyashita, P. Murat, E. Pedreschi, G. Pezzullo, F. Porter, F. Raffaelli, M. Ricci, A. Saputi, I. Sarra, F. Spinella, G. Tassielli, V. Tereshchenko, R. Y. Zhu. 2018-01-09. Design, status and perspective of the Mu2e crystal calorimeter. https://arxiv.org/abs/1801.03159

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