Author: Bereder, J.M.
Paper Title Page
WEPMY041 Development of Mobile Neutron Sources Driven by X-Band Electron Linacs for Infrastructure Maintenance and Nuclear Security 2648
  • Y. Seki, J.M. Bereder, M. Uesaka
    The University of Tokyo, Nuclear Professional School, Ibaraki-ken, Japan
  We are developing a compact neutron source with a 3.95 MeV X-band (9.3 GHz) electron linac based X-ray source. The X-ray source, which included a tungsten target for bremsstrahlung, was originally fabricated for on-site nondestructive inspections for infrastructures such as bridges, expressways and tunnels. Attachment of a photo-neutron target to this X-ray source allows a new mobile neutron source. Main applications of this neutron source are on-site moisture detection in infrastructures, and nuclear materials measurement in fuel debris for decommissioning Fukushima nuclear power plants. Our approach also realizes a mobile X-ray/neutron hybrid source system in the future. The beryllium was employed as target material since it had especially small threshold energy for the photo neutron production. We have developed a 60-cm-cube target station by combining a beryllium block, a graphite reflector, a polyethylene moderator, a boric acid resin layer (neutron shied), and a lead layer (gamma-ray shield). This presentation will report a pilot experiment of neutron generation and discuss the results compared to a Monte Carlo simulation.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMY041  
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