Abstract
Measurement of the neutron energy spectrum in the epithermal energy region is very important for accelerator-based Boron Neutron Capture Therapy (BNCT), but the measuring technique is not well established. We developed a new multi-moderator spectrometer using boron-loaded siHcon rubber and polyethylene for epithermal neutrons.In this paper, the response functions of the new multi-moderator neutron spectrometer were calculated with the MCNPX code, and were compared with the measured results in a neutron calibration field using a 252Cf neutron source.This spectrometer can be applied to measure the neutron spectrum to be used in accelerator-based Boron Neutron Capture Therapy.
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