The calorimeter system of the new muon g-2 experiment at Fermilab

The electromagnetic calorimeter for the new muon (g-2) experiment at Fermilab will consist of arrays of PbF2 Cerenkov crystals read out by large-area silicon photo-multiplier (SiPM) sensors. We report here the requirements for this system, the achieved solution and the results obtained from a test beam using 2.0-4.5 GeV electrons with a 28-element prototype array. (C) 2015 Elsevier B.V. All rights reserved.