The Spallation Neutron Source High Power Target Station Moderator Performance: Calculations and Studies

Article type: Research Article

Authors: Iverson, E.B. | Ferguson, P.D. | Gallmeier, F.X. | Murphy, B.D.

Affiliations: Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

Note: [] Corresponding author. E-mail: [email protected]

Abstract: We address recent progress in the continued neutronic design of the Spallation Neutron Source Target Station as regards moderator performance. The Spallation Neutron Source Target Station will receive 2 MW of 1 GeV protons at 60 Hz. This level of proton power offers unprecedented neutronic performance for pulsed neutron production for time-of-flight neutron scattering, as well as unprecedented challenges in providing such a performance. We report on the results of recent design optimization studies and the importance of carefully matching moderator performance characteristics to the needs of the neutron scattering instruments.

Keywords: Spallation, Neutron scattering, Neutron moderation, Pulsed moderator design, Neutron beams, Monte Carlo neutronics

DOI: 10.1080/1023816031000100932

Journal: Journal of Neutron Research, vol. 11, no. 1, 2, pp. 83-91, 2003