S. Bhadra et al., TEST OF A FORWARD-NEUTRON-CALORIMETER FOR THE ZEUS EXPERIMENT AT HERA, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 354(2-3), 1995, pp. 479-486
A Forward Neutron Calorimeter (FNC) for ZEUS is being constructed to d
etect high energy neutrons produced in the proton direction in ep coll
isions at HERA. To investigate the feasibility of such studies, a smal
l iron-scintillator sandwich calorimeter was placed on the zero degree
line 102 m downstream of the main ZEUS detector. The calorimeter was
calibrated by studying proton beam-gas interactions during the HERA ac
celeration cycle. The design and construction of the calorimeter are d
escribed and the results of the test studies presented.