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López, D.

Paper Title Page
MOPD026 Radiological Hazards Assessment for the Beam Dump of High Intensity Deuteron Accelerators 502
 
  • D. López, M. Garcia, A. Mayoral, F. Ogando, J. Sanz, P. Sauvan
    UNED, Madrid
 
  Several of the most important aspects with regards to the radiological potential hazards assessment in the beam dump of a high intensity deuteron accelerator are analyzed. Deuteron and neutron induced activation as well as neutron production for the beam dump cartridge, in order to select low activation materials; evaluation of the tritium production due to the implanted deuterium in the material and the presence of water in the cooling and local shielding systems, relevant for the associated radiotoxicity; estimation of gamma dose rate in beam-off phase in the vicinity of the cartridge, important issue for accessibility and maintenance works of the system. All these points are assessed both for normal operation and commissioning phase in the IFMIF-EVEDA accelerator prototype. Several materials are studied according to neutron production using transport codes (MCNPX and PHITS) and EAF2007 libraries. Activation calculations with ACAB code use irradiation fluxes obtained with MCNPX. Evaluation of tritium production due to implanted deuterium is calculated with SRIM-TMAP7 coupled code. Tritium in water is calculated by activation procedures. Gamma dose rate is computed with MCNPX.