Title of article
Measurement of the contribution of neutrons to hadron calorimeter signals
Author/Authors
Akchurin، نويسنده , , N. and Berntzon، نويسنده , , L. and Cardini، نويسنده , , A. and Ferrari، نويسنده , , R. M. Gaudio، نويسنده , , G. and Hauptman، نويسنده , , J. and Kim، نويسنده , , H. and La Rotonda، نويسنده , , L. and Livan، نويسنده , , M. and Meoni، نويسنده , , E. and Paar، نويسنده , , H. and Penzo، نويسنده , , A. and Pinci، نويسنده , , D. and Policicchio، نويسنده , , A. and Popescu، نويسنده , , S. and Susinno، نويسنده , , G. and Roh، نويسنده ,
Pages
8
From page
643
To page
650
Abstract
The contributions of neutrons to hadronic signals from the DREAM calorimeter are measured by analyzing the time structure of these signals. The neutrons, which mainly originate from the evaporation stage of nuclear breakup in the hadronic shower development process, contribute through elastic scattering off protons in the plastic scintillating fibers which provide the d E / d x information in this calorimeter. This contribution is characterized by an exponential tail in the pulse shape, with a time constant of ∼ 25 ns . The relative contribution of neutrons to the signals increases with the distance from the shower axis. As expected, the neutrons do not contribute to the DREAM Cherenkov signals.
Keywords
Cherenkov light , Calorimetry , Neutron signals , optical fibers
Journal title
Astroparticle Physics
Record number
2030956
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