Speaker
Description
The baseline calorimeter configuration consists of 1348 undoped CsI crystals coupled to 2 large area UV-extended Silicon Photomultipliers (SiPMs) and divided in two annular disks.
An intense R\&D program has been pursued in order to control if this configuration satisfies the Mu2e requirements.
In May 2017, a dedicated test has been performed at the Beam Test Facility (BTF) in Frascati (Italy) where
a large calorimeter prototype, dubbed Module-0, has been exposed to an electron beam in the energy range between 60 and 120 MeV.
The prototype consisted of 51 crystals, each one readout by 2 Mu2e SiPMs.
The analog signals were acquired with a CAEN waveform digitiser.
Here we present results for calibration methods and timing and energy resolution performance.
With the beam at normal incidence, a time resolution of ~97 ps (~130 ps) was measured at
100 MeV beam energy when using 1 GHz (250 MHz) sampling rate.
In the same configuration, an energy resolution of about 5\% was achieved, in good agreement with Monte Carlo expectations.
Dependence of time and energy resolutions response as a function of the beam impinging angle and energy will be also presented.
Secondary topics
Data reconstruction and test beam
| Applications | Design concepts for future calorimeter at the intensity frontier |
|---|---|
| Primary topic | Other |
