2011 Article Detectors Dosimetry ICNCT14 Physics

Bonner sphere spectrometer for characterization of BNCT beam

Applied Radiation and Isotopes, 2011

Authors:   Milan Marek,Ladislav Viererbl,
Journal: Applied Radiation and Isotopes
Abstract: The characterization of the epithermal beam is performed by different dosimetry techniques that give information on neutron flux as well as neutron and photon doses. One of the possible methods is based on the measurement of thermal neutrons in a moderation environment, which enables the evaluation of neutron flux in a group structure and also neutron dose. The advantage of such a spectrometer consists of the fact that 90% response intervals of the spheres continuously cover the epithermal part of the neutron energy range. The method has been applied to characterize the epithermal neutron beams at several research centers in USA, Finland, the Netherlands and Czech Republic. The comparison of the MIT FCB, HFR HB11, VTT FiR, and LVR-15 beam parameters is presented in this paper.