Towards an improved GELINA neutron target

Marek Flaska, Alessandro Borella, Danny Lathouwers, Liviu C. Mihailescu, Willy Mondelaers, Arjan J.M. Plompen, Hugo Van Dam, Tim H.J.J. Van Der Hagen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The neutron target of the GELINA time-of-flight facility has been simulated with coupled electron-photon-neutron MCNP4C3 calculations. The main goal is to investigate the feasibility for the reduction of the neutron time spread without significantly compromising the neutron yield. An implementation of new photonuclear libraries into the Monte Carlo calculations was necessary to simulate the neutronics problem accurately. Absolute flux calculations were performed for both moderated and direct neutron spectra in order to validate the geometry model and the method used to deal with the neutronics problem. These results were compared with the measured neutron spectra at specific flight paths; an agreement within 20% was achieved. The resolution functions of the moderated spectrum currently in use were compared with our Monte Carlo simulations; here an excellent agreement was reached. Finally, the simulated resolution functions for the direct neutron spectrum were calculated with and without the presence of the moderator. This comparison illustrates the negative influence of the moderator on the resolution function for the fast neutron spectrum.

Original languageEnglish (US)
Title of host publicationProceedings of the PHYSOR 2004
Subtitle of host publicationThe Physics of Fuel Cycles and Advanced Nuclear Systems - Global Developments
Pages507-513
Number of pages7
StatePublished - Dec 1 2004
EventPHYSOR 2004: The Physics of Fuel Cycles and Advanced Nuclear Systems - Global Developments - Chicago, IL, United States
Duration: Apr 25 2004Apr 29 2004

Publication series

NameProceedings of the PHYSOR 2004: The Physics of Fuel Cycles and Advanced Nuclear Systems - Global Developments

Other

OtherPHYSOR 2004: The Physics of Fuel Cycles and Advanced Nuclear Systems - Global Developments
CountryUnited States
CityChicago, IL
Period4/25/044/29/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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