CERN Accelerating science

Article
Report number	arXiv:1605.09630
Title	A compact light readout system for longitudinally segmented shashlik calorimeters
Related title	A compact light readout system for longitudinally segmented shashlik calorimeters
Author(s)	Berra, A. (INFN, Milan Bicocca ; Insubria U., Como) ; Brizzolari, C. (INFN, Milan Bicocca ; Insubria U., Como) ; Cecchini, S. (INFN, Bologna) ; Cindolo, F. (INFN, Bologna) ; Jollet, C. (Strasbourg, IPHC ; Louis Pasteur U., Strasbourg I) ; Longhin, A. (Frascati ; INFN, Padua ; Frascati ; INFN, Padua) ; Ludovici, L. (INFN, Rome) ; Mandrioli, G. (INFN, Bologna) ; Mauri, N. (INFN, Bologna ; Bologna U. ; INFN, Bologna ; Bologna U. ; INFN, Bologna) ; Meregaglia, A. (Strasbourg, IPHC ; Louis Pasteur U., Strasbourg I) ; Paoloni, A. (Frascati) ; Pasqualini, L. (INFN, Bologna ; Bologna U. ; INFN, Bologna ; Bologna U. ; INFN, Bologna) ; Patrizii, L. (INFN, Bologna) ; Pozzato, M. (INFN, Bologna ; Bologna U. ; INFN, Bologna ; Bologna U. ; INFN, Bologna) ; Pupilli, F. (Frascati) ; Prest, M. (Insubria U., Como ; INFN, Milan Bicocca ; Insubria U., Como) ; Sirri, G. (INFN, Bologna) ; Terranova, F. (INFN, Milan Bicocca ; Milan Bicocca U. ; INFN, Milan Bicocca ; Milan Bicocca U.) ; Vallazza, E. (INFN, Trieste) ; Votano, L. (Frascati ; Gran Sasso)
Publication	2016-09-11
Imprint	31 May 2016
Number of pages	16
Note	Comments: To appear in Nuclear Instruments and Methods in Physics Research, A To appear in Nuclear Instruments and Methods in Physics Research, A
In:	Nucl. Instrum. Methods Phys. Res., A 830 (2016) 345-354
DOI	10.1016/j.nima.2016.05.123
Subject category	hep-ex ; Particle Physics - Experiment ; physics.ins-det ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN PS CERN PS
Test beam	T9
Abstract	The longitudinal segmentation of shashlik calorimeters is challenged by dead zones and non-uniformities introduced by the light collection and readout system. This limitation can be overcome by direct fiber-photosensor coupling, avoiding routing and bundling of the wavelength shifter fibers and embedding ultra-compact photosensors (SiPMs) in the bulk of the calorimeter. We present the first experimental test of this readout scheme performed at the CERN PS-T9 beamline in 2015 with negative particles in the 1-5 GeV energy range. In this paper, we demonstrate that the scheme does not compromise the energy resolution and linearity compared with standard light collection and readout systems. In addition, we study the performance of the calorimeter for partially contained charged hadrons to assess the $e/\pi$ separation capability and the response of the photosensors to direct ionization.
Copyright/License	Elsevier B.V. (License: arXiv nonexclusive-distrib. 1.0)

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