Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1997-01-27
Nucl.Instrum.Meth.A394:121-135,1997
Physics
High Energy Physics
High Energy Physics - Experiment
45 pages, 22 Encapsulated Postscript figures, submitted to Nuclear Instruments and Methods
Scientific paper
10.1016/S0168-9002(97)00647-5
A lead scintillator sandwich sampling calorimeter has been installed in the HERA tunnel 105.6 m from the central ZEUS detector in the proton beam direction. It is designed to measure the energy and scattering angle of neutrons produced in charge exchange ep collisions. Before installation the calorimeter was tested and calibrated in the H6 beam at CERN where 120 GeV electrons, muons, pions and protons were made incident on the calorimeter. In addition, the spectrum of fast neutrons from charge exchange proton-lucite collisions was measured. The design and construction of the calorimeter is described, and the results of the CERN test reported. Special attention is paid to the measurement of shower position, shower width, and the separation of electromagnetic showers from hadronic showers. The overall energy scale as determined from the energy spectrum of charge exchange neutrons is compared to that obtained from direct beam hadrons.
Bhadra Sampa
Bohnet I.
Cardy M.
Dosselli U.
Fagerstroem C.-P.
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