Speaker
Erik Vallazza
(INFN Trieste (Italy))
Description
In recent years many devices have been proposed as an alternative to the photomultipliers tubes (PMTs) for the readout of scintillating detectors. Silicon Photomultipliers (SiPMs) are silicon devices composed by a matrix of pixels joined together in a common silicon substrate. Each pixel can be considered as a diode reverse biased above the breakdown voltage working in Geiger discharge mode: the analog response of the device is
obtained considering the number of fired pixels. The main advantages with respect to the PMTs are the small dimensions, the simple readout and the insensitivity to magnetic fields. This contribution presents the performances of two different types of SiPMs with a sensitive area of 1mm^2 and 9mm^2 manufactured by FBK-Irst used to read two different shashlik calorimeters composed by lead and scintillator tiles for a total of 24 and 19 radiation lengths and readout by 64 and 144 WLS fibers grouped in bundles for a total of 16 channels each. The main feature of the experimental setup is the fact that it represents the first feasibility study of non-amplified SiPMs in a typical HEP scenario.
The performances of the two calorimeters have been analyzed in terms of linearity, energy and spatial resolution using both low and high energy particles in three beam tests performed at the CERN PS T10, T9 and SPS H4 beamlines.
Summary (Additional text describing your work. Can be pasted here or give an URL to a PDF document):
http://www.ts.infn.it/~prest/vienna_conference/summary_vallazza.pdf
Author
Erik Vallazza
(INFN Trieste (Italy))
Co-authors
Prof.
Aldo Penzo
(INFN Trieste (Italy))
Dr
Alessandro Berra
(Univ. of Insubria + INFN Milano-Bicocca (Italy))
Dr
Andrea Mattera
(Univ. of Insubria + INFN Milano-Bicocca (Italy))
Dr
Anna Driutti
(Univ. of Udine + INFN Trieste (Italy))
Dr
Daniela Lietti
(Univ. of Insubria + INFN Milano-Bicocca (Italy))
Mr
Dario Iugovaz
(INFN Trieste (Italy))
Dr
Davide Bolognini
(Univ. of Insubria + INFN Milano-Bicocca (Italy))
Dr
Diego Cauz
(Univ. of Udine + INFN Trieste (Italy))
Dr
Federica Scarpino
(Univ. of Insubria + INFN Milano-Bicocca (Italy))
Prof.
Giovanni Pauletta
(Univ. of Udine + INFN Trieste (Italy))
Dr
Irina Rashevskaya
(INFN Trieste (Italy))
Prof.
Luciano Bosisio
(Univ. of Trieste + INFN Trieste (Italy))
Dr
Michela Prest
(Univ. of Insubria + INFN Milano-Bicocca (Italy))
Dr
Said Hasan
(Univ. of Insubria + INFN Milano-Bicocca (Italy))
Mr
Stefano Reia
(INFN Trieste (Italy))
Dr
Valter Bonvicini
(INFN Trieste (Italy))
