Radiation Characterization Summary: ACRR Central Cavity Free-Field Environment with the 32-Inch Pedestal at the Core Centerline (ACRR-FF-CC-32-cl).

Technical Report · Sat Aug 01 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1209885· OSTI ID:1209885

Vega, Richard Manuel ^[1]; Parma, Edward J. ^[1]; Naranjo, Gerald E. ^[1]; Lippert, Lance L. ^[1]; Vehar, David W. ^[1]; Griffin, Patrick J. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

This document presents the facilit y - recommended characteri zation o f the neutron, prompt gamma - ray, and delayed gamma - ray radiation fields in the Annular Core Research Reactor ( ACRR ) for the cen tral cavity free - field environment with the 32 - inch pedestal at the core centerline. The designation for this environmen t is ACRR - FF - CC - 32 - cl. The neutron, prompt gamma - ray , and delayed gamma - ray energy spectra , uncertainties, and covariance matrices are presented as well as radial and axial neutron and gamma - ray fluence profiles within the experiment area of the cavity . Recommended constants are given to facilitate the conversion of various dosimetry readings into radiation metrics desired by experimenters. Representative pulse operations are presented with conversion examples . Acknowledgements The authors wish to th ank the Annular Core Research Reactor staff and the Radiation Metrology Laboratory staff for their support of this work . Also thanks to David Ames for his assistance in running MCNP on the Sandia parallel machines.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1209885
• Report Number(s): SAND2015-6483; 598741
• Country of Publication: United States
• Language: English