Title: Global Characterisation of the GELINA Facility for High-Resolution Neutron Time-of-Flight Measurements by Monte Carlo Simulations
Authors: ENE DanielaBORCEA CatalinKOPECKY STEFANMONDELAERS WILLYNEGRET ALEXANDRUPLOMPEN ARJAN
Citation: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT vol. 618 no. 1-3 p. 54-68
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2010
JRC N°: JRC36942
ISSN: 0168-9002
URI: www.elsevier.com/locate/nima
http://publications.jrc.ec.europa.eu/repository/handle/JRC36942
DOI: 10.1016/j.nima.2010.03.005
Type: Articles in Journals
Abstract: A comprehensive set of Monte Carlo simulations was performed with the MCNP5 code to provide a generic characterisation of the neutron and photon fluxes for time-of-flight measurements at all flight paths of the GELINA facility. Simulations were performed for the direct flux configuration (DFC, 10 keV-20 MeV) and the moderated flux configuration (MFC, 10 meV-1 MeV). Fluxes and flux energy spectra were obtained for, both neutrons and photons, while for neutrons detailed resolution functions and figures of merit were obtained, in addition. The validity of the approach for the photon spectra is shown by comparison with a dedicated experiment. Also, an elaborate verification is presented of the validity of the neutron resolution function by comparison with measured capture and transmission data for 103Rh and 56Fe in the incident neutron energy range from 70 eV to 50 keV. This comprehensive overview will facilitate the planning and analysis of measurementsat the GELINA facility with an improved knowledge of its physical characteristics.
JRC Institute:Institute for Reference Materials and Measurements

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