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Title: A New Era of Nuclear Criticality Experiments: The First 10 Years of Flattop Operations at NCERC

Journal Article · · Nuclear Science and Engineering
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Michigan, Ann Arbor, MI (United States)
+ Show Author Affiliations

The Flattop critical assembly was built and operated from 1958 through 2004 at the Pajarito Site (Technical Area-18), home to the Los Alamos Critical Experiments Facility. Flattop was disassembled in 2005 and refurbished over the course of 3 years. In 2008, Flattop was installed in the National Criticality Experiments Research Center (NCERC) located in the Device Assembly Facility at the Nevada National Security Site. Startup of Flattop with a uranium core occurred in 2011. This paper details the first 10 years of Flattop operations at NCERC (2011–present).

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1900385
Journal Information:
Nuclear Science and Engineering, Vol. 195, Issue sup1; ISSN 0029-5639
Publisher:
Taylor & FrancisCopyright Statement
Country of Publication:
United States
Language:
English

References (9)

A New Era of Nuclear Criticality Experiments: The First 10 Years of Comet Operations at NCERC journal October 2021
Results of the KRUSTY Warm Critical Experiments journal June 2020
Activation product interpretation of structural material for fast critical assemblies journal September 2018
Topsy, A Remotely Controlled Critical Assembly Machine journal March 1956
A New Era of Nuclear Criticality Experiments: The First 10 Years of Planet Operations at NCERC journal October 2021
A New Era of Nuclear Criticality Experiments: The First 10 Years of Radiation Test Object Operations at NCERC journal October 2021
Comparison of irradiated foil measurements with activation calculations and HPGe simulations journal April 2018
Fission Product Yields from Fission Spectrum n+239Pu for ENDF/B-VII.1 journal December 2010
Fission Product Data Measured at Los Alamos for Fission Spectrum and Thermal Neutrons on 239Pu, 235U, 238U journal December 2010

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
96 KNOWLEDGE MANAGEMENT AND PRESERVATION
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Nuclear Criticality Safety Program (NCSP)
Integral Experiments
Flattop
Criticality Experiments
Critical Assembly Machine
National Criticality Experiments Research Center
Fast Benchmark Experiment