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Title: Design of the Fifth-Generation Target-Moderator-Reflector-Shield Assembly

The facilities at the Los Alamos Neutron Science Center are described first. The target is being redesigned so that the Flight Paths (FP) in the upper tier provide a higher intensity in the epithermal and medium energy range. It is found that a 3-piece design looks promising: intensity in epithermal and medium energy range in upper tier is an order of magnitude higher than current Mark III, and intensity in the thermal energy range is higher in the lower tier than current Mark III. Time emission spectra show a bump due to the scattering of fast neutrons. Other investigations such as the addition of wings around the upper target will be conducted.
Authors:
 [1] ;  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
OSTI Identifier:
1226140
Report Number(s):
LA-UR--15-28926
TRN: US1700235
DOE Contract Number:
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: Twelfth International Topical Meeting on Nuclear Applications of Accelerators (AccApp’15), Washington, DC (United States), 10 Nov 2015
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; FAST NEUTRONS; LAMPF LINAC; ACCELERATOR NEUTRON SOURCES; TARGETS; EPITHERMAL NEUTRONS; INTERMEDIATE NEUTRONS; THERMAL NEUTRONS; NEUTRON FLUX; DESIGN; EMISSION SPECTRA; MODERATORS; SHIELDS; NEUTRON REFLECTORS; SCATTERING Accelerator Design; Technology; Operations