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29 March 2024
 
  » arxiv » 1701.7975

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The calorimeter of the Mu2e experiment at Fermilab
N. Atanov ; V. Baranov ; J. Budagov ; F. Cervelli ; F. Colao ; M. Cordelli ; G. Corradi ; E. Dané ; Yu.I. Davydov ; S. Di Falco ; E. Diociaiuti ; S. Donati ; R. Donghia ; B. Echenard ; K. Flood ; S. Giovannella ; V. Glagolev ; F. Grancagnolo ; F. Happacher ; D.G. Hitlin ; M. Martini ; S. Miscetti ; T. Miyashita ; L. Morescalchi ; P. Murat ; G. Pezzullo ; F. Porter ; F. Raffaelli ; T. Radicioni ; M. Ricci ; A. Saputi ; I. Sarra ; F. Spinella ; G. Tassielli ; V. Tereshchenko ; Z. Usubov ; R.Y. Zhu ;
Date 27 Jan 2017
AbstractThe Mu2e experiment at Fermilab looks for Charged Lepton Flavor Violation (CLFV) improving by 4 orders of magnitude the current experimental sensitivity for the muon to electron conversion in a muonic atom. A positive signal could not be explained in the framework of the current Standard Model of particle interactions and therefore would be a clear indication of new physics. In 3 years of data taking, Mu2e is expected to observe less than one background event mimicking the electron coming from muon conversion. Achieving such a level of background suppression requires a deep knowledge of the experimental apparatus: a straw tube tracker, measuring the electron momentum and time, a cosmic ray veto system rejecting most of cosmic ray background and a pure CsI crystal calorimeter, that will measure time of flight, energy and impact position of the converted electron. The calorimeter has to operate in a harsh radiation environment, in a 10-4 Torr vacuum and inside a 1 T magnetic field. The results of the first qualification tests of the calorimeter components are reported together with the energy and time performances expected from the simulation and measured in beam tests of a small scale prototype.
Source arXiv, 1701.7975
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