TY - GEN
T1 - Fast neutron scattering measurements with lead
AU - Youmans, A.
AU - Brown, J.
AU - Daskalakis, A.
AU - Thompson, N.
AU - Weltz, A.
AU - Danon, Y.
AU - Barry, D.
AU - Epping, B.
AU - Leinweber, G.
AU - Rapp, M.
N1 - Publisher Copyright:
© 12th International Topical Meeting on Nuclear Applications of Accelerators 2015, AccApp 2015. All rights reserved.
PY - 2015
Y1 - 2015
N2 - Fast neutron scattering from natural lead was measured at the Rensselaer Polytechnic Institute's (RPI) Gaerttner Linear Accelerator Center (LINAC). This measurement was performed using eight detectors positioned at different solid angles, with neutron events recorded in time of flight. This experiment used liquid scintillator EJ301 detectors and a tantalum photo-neutron target, which were optimized for the energy range between 0.5 MeV and 20 MeV. A digital data acquisition system was used for pulse shape analysis to discriminate gamma rays from neutrons. These measurements are used to assess the accuracy of data libraries such as the Evaluated Nuclear Data File (ENDF), Japanese Evaluated Neutron Data Library (JENDL), and the Joint Evaluated Fission and Fusion File (JEFF). The resonance structure in natural lead was clearly observed in the scattering data. Back angle measurements showed a difference between measurements and MCNP calculations using the ENDF/B-VII.1 library. These neutron scattering data will improve the accuracy of cross section libraries used in simulations with lead, such as lead criticality benchmarks, reflector materials, and Gen IV reactors with lead coolant.
AB - Fast neutron scattering from natural lead was measured at the Rensselaer Polytechnic Institute's (RPI) Gaerttner Linear Accelerator Center (LINAC). This measurement was performed using eight detectors positioned at different solid angles, with neutron events recorded in time of flight. This experiment used liquid scintillator EJ301 detectors and a tantalum photo-neutron target, which were optimized for the energy range between 0.5 MeV and 20 MeV. A digital data acquisition system was used for pulse shape analysis to discriminate gamma rays from neutrons. These measurements are used to assess the accuracy of data libraries such as the Evaluated Nuclear Data File (ENDF), Japanese Evaluated Neutron Data Library (JENDL), and the Joint Evaluated Fission and Fusion File (JEFF). The resonance structure in natural lead was clearly observed in the scattering data. Back angle measurements showed a difference between measurements and MCNP calculations using the ENDF/B-VII.1 library. These neutron scattering data will improve the accuracy of cross section libraries used in simulations with lead, such as lead criticality benchmarks, reflector materials, and Gen IV reactors with lead coolant.
KW - Angular distribution
KW - Benchmark data
KW - Elemental Pb
KW - Neutron experiment
UR - http://www.scopus.com/inward/record.url?scp=85030465244&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85030465244
T3 - 12th International Topical Meeting on Nuclear Applications of Accelerators 2015, AccApp 2015
SP - 355
EP - 360
BT - 12th International Topical Meeting on Nuclear Applications of Accelerators 2015, AccApp 2015
PB - American Nuclear Society
T2 - 12th International Topical Meeting on Nuclear Applications of Accelerators 2015, AccApp 2015
Y2 - 10 November 2015 through 13 November 2015
ER -