Speaker
Simona Giovannella
(INFN - LNF)
Description
A beam test of the prototype LYSO electromagnetic calorimeter for the
Mu2e experiment at Fermilab has been performed at the beam test
facility, BTF, of the Laboratori Nazionali di Frascati of INFN using
electrons from 100 to 450 MeV. The time resolution of the 25 crystal
matrix, readout by large area APD of Hamamatsu, has been measured
with two techniques and compared with Monte Carlo simulations.
A time resolution of $\sim$ 160 ps is obtained at 100 MeV.
The first technique uses the timing of each single photosensor
as derived by a fit to the signal pulses recorded with a 250 Msps Waveform
Digitizer with respect to the timing provided by two scintillator
counters. A second method uses instead the time difference
between two neighbour cells thus allowing us also to estimate
the timing resolution with the tagged photon beam
of the MAMI (Mainz Microtron) facility.
Primary author
Stefano Roberto Soleti
(INFN - LNF)
