Proton-recoil detectors for time-of-flight measurements of neutrons with kinetic energies from some tens of keV to a few MeV
Proton-recoil detectors for time-of-flight measurements of neutrons with kinetic energies from some tens of keV to a few MeV
Beyer, R.; Grosse, E.; Heidel, K.; Hutsch, J.; Junghans, A. R.; Klug, J.; Legrady, D.; Nolte, R.; Röttger, S.; Sobiella, M.; Wagner, A.
For experiments at the superconducting electron accelerator ELBE, where neutrons in the kinetic energy region from some tens of keV to a few MeV will be produced by bremsstrahlung, neutron-time-of-flight detectors have been developed. These detectors are made from the plastic scintillator material EJ-200. Efficiency calibration showed more than 10% efficiency for kinetic energies down to 30 keV. The calibration was done at the accelerator facility for fast neutron research at Physikalisch-Technische Bundesanstalt in Braunschweig, using pulsed quasi-monoenergetic neutron fields with a well-determined fluence. The low detection threshold was obtained by coincident readout of two Hamamatsu R2059-01 photomultiplier tubes per scintillator and by triggering just below the single-photo-electron peak of these photomultiplier tubes, which additionally gives a well-reproduceable detection threshold.
Keywords: neutron detector proton-recoil detector; fast neutrons; neutron time of flight; nELBE
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Nuclear Instruments and Methods in Physics Research A 575(2007), 449-455
DOI: 10.1016/j.nima.2007.02.096
Cited 32 times in Scopus -
Poster
2008 Nuclear Science Symposium, 12.-25.10.2008, Dresden, Deutschland -
Contribution to proceedings
2008 IEEE Nuclear Science Symposium, 19.-25.10.2008, Dresden, Deutschland
Nuclear Science Symposium Conference Record, 2008. NSS '08.
DOI: 10.1109/NSSMIC.2008.4774625
Permalink: https://www.hzdr.de/publications/Publ-9761