Abstract
Different versions of the design of a neutron dosemeter for high energy accelerators based on a fast scintillation lithium glass detector of thermal neutrons are considered. The detector is placed at the center of a polyethylene moderator shaped as a sphere, a cylinder, or a truncated cylinder with a lead insert used to increase the dosemeter sensitivity to neutrons with energies above 20 MeV. Calculations of the design parameters have been performed to optimize the angular and energy dependences of the response at energies ranging from the thermal energy to 1 GeV. The best results have been obtained for dosemeter versions comprising a boron filter along with the lead insert. In this case, the instrument has the lowest mass. The dosemeter has been developed for use in the radiation monitoring systems of the IHEP U-70 accelerator complex and other accelerators. It can also be used outside shields of reactors and other low-energy facilities.
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Original Russian Text © V.N. Peleshko, E.N. Savitskaya, A.V. Sannikov, 2015, published in Pribory i Tekhnika Eksperimenta, 2015, No. 4, pp. 24–31.
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Peleshko, V.N., Savitskaya, E.N. & Sannikov, A.V. Optimizing the design of a neutron dosemeter with an extended energy range for high energy accelerators. Instrum Exp Tech 58, 465–472 (2015). https://doi.org/10.1134/S0020441215040089
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DOI: https://doi.org/10.1134/S0020441215040089