Performance of the PADME calorimeter prototype at the DA$Φ$NE BTF
physics.ins-det
/ Authors
M. Raggi, V. Kozhuharov, P. Valente, F. Ferrarotto, E. Leonardi, G. Organtini, L. Tsankov, G. Georgiev, J. Alexander, B. Buonomo
and 3 more authors
/ Abstract
The PADME experiment at the DA$Φ$NE Beam-Test Facility (BTF) aims at searching for invisible decays of the dark photon by measuring the final state missing mass in the process $e^+e^- \to γ+ A'$, with $A'$ undetected. The measurement requires the determination of the 4-momentum of the recoil photon, performed using a homogeneous, highly segmented BGO crystals calorimeter. We report the results of the test of a 5$\times$5 crystals prototype performed with an electron beam at the BTF in July 2016.