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Hadron calorimeter with MAPD readout in the NA61/SHINE experiment

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arxiv 1205.4864 v2 pith:YJ67N6WE submitted 2012-05-22 physics.ins-det hep-ex

A. Ivashkin , F. Akhmadov , R. Asfandiyarov , A. Bravar , A. Blondel , W. Dominik , Z. Fodor , M. Gazdzicki
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M. Golubeva F. Guber A. Hasler A. Korzenev S. Kuleshov A. Kurepin A. Laszlo V. Marin Yu. Musienko O. Petukhov D. Röhrich A. Sadovsky Z. Sadygov T. Tolyhi F. Zerrouk
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classification physics.ins-dethep-ex
keywords calorimeterreadoutexperimenthadronindependentmapdna61scintillator
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The modular hadron calorimeter with micro-pixel avalanche photodiodes readout for the NA61/SHINE experiment at the CERN SPS is presented. The calorimeter consists of 44 independent modules with lead-scintillator sandwich structure. The light from the scintillator tiles is captured by and transported with WLS-fibers embedded in scintillator grooves. The construction provides a longitudinal segmentation of the module in 10 sections with independent MAPD readout. MAPDs with pixel density of $~10^{4}$/mm$^2$ ensure good linearity of calorimeter response in a wide dynamical range. The performance of the calorimeter prototype in a beam test is reported.

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