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Characterization of a scintillating fibers read by MPPC detectors trigger prototype for the AMADEUS experiment | | A.Scordo
; M.Bazzi
; C.Berucci
; C.Curceanu
; A.D'Uffizi
; K.Piscicchia
; M.Poli Lener
; A.Romero Vidal
; E.Sbardella
; O.Vazquez Doce
; | | Date: |
30 Jan 2013 | | Abstract: | Multi-Pixel Photon Counters (MPPC) consist of hundreds of micro silicon
Avalanche PhotoDiodes (APD) working in Geiger mode. The high gain and the low
noise, typical of these devices, together with their good performance in
magnetic field, make them ideal readout detectors for scintillating fibers as
trigger detectors in particle and nuclear physics experiments like AMADEUS,
where such detectors are planned to be used to trigger on charged kaon pairs.
In order to investigate the detection efficiency of such a system, a prototype
setup consisting of 32, 1 mm diameter scintillating fibers, arranged in two
double layers of 16 fibers each, and read out by 64 MPPCs with an ad-hoc built
readout electronics, was tested at the piM-1 line of the Paul Scherrer
Institute (PSI) in Villigen, Switzerland. The detection efficiency and the
trigger capability were measured on a beam containing protons, electrons, muons
and pions with a momentum of 440 MeV/c. The measured average efficiency for
protons for a double layer of scintillating fibers (96.9 +/-1.2%) represents a
guarantee of the good performance of this system as a trigger for the AMADEUS
experiment. | | Source: | arXiv, 1301.7268 | | Services: | Forum | Review | PDF | Favorites | |
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