Published in
Elsevier, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, (728), p. 47-52
DOI: 10.1016/j.nima.2013.06.037
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Construction and calibration of the multi-neutron correlation spectrometer at Peking University
,
J. Xiao,
R. Qiao,
Z. Y. Tian,
Y. L. Sun,
H. N. Liu,
J. Chen,
J. Wu ,
B. Yang
and other authors.
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Abstract
a b s t r a c t A Multi-Neutron Correlation Spectrometer (MuNCoS) composed of 80 detector modules was constructed at Peking University. A position resolution of less than 3 cm (FWHM) for a typical long scintillation module was obtained based on cosmic ray tests. A calibration method using an unstable nucleus beam of 11 Be, together with the fragment identification by using a zero degree telescope, has been successfully developed. Neutron detection efficiencies of 15(1)% and 17(2)% were achieved for neutron energy intervals of 30–40 MeV and 40–60 MeV, respectively, and at a signal charge threshold of 4 MeVee. The experimentally determined neutron detection efficiencies agree well with the simulation based on the GEANT4 code. & 2013 Elsevier B.V. All rights reserved.