The Digitizer ReAdout Controller (DIRAC) of the Mu2e electromagnetic calorimeter at Fermilab
E. Elena Pedreschi*,
F. Cervelli,
S. Di Falco,
S. Donati,
L. Morescalchi,
F. Raffaelli,
F. Spinella,
S. Ceravolo,
G. Corradi,
E. Diociaiuti,
R. Donghia,
S. Giovannella,
F. Happacher,
M. Martini,
S. Miscetti,
D. Pasciuto and
I. Sarra*: corresponding author
Pre-published on:
March 09, 2020
Published on:
April 21, 2020
Abstract
We report on the design and performance of the Digitizer ReAdout Controller (DIRAC) of the Mu2e electromagnetic calorimeter, which consists of a 670 CsI crystals matrix readout by SiPM. The 20-channels DIRAC performs 200 MHz sampling of the SiPM signals transmitted by the front-end electronics. Operation in the Mu2e hostile environment expected Total Ionizing Dose (TID) of 12 Krad and neutron fluence of 5x10 10 n/cm 2 @ 1 MeV eq (Si)/y, 1T magnetic field, level of vacuum of 10 -4 Torr has made the DIRAC design challenging. We describe design, specifications, architecture and results of the tests performed on the DIRAC prototypes.
DOI: https://doi.org/10.22323/1.370.0119
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