New simulation capability for gamma ray mirror experiments

Technical Report · Mon Sep 28 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1240928· OSTI ID:1240928

Descalle, Marie-Anne ^[1]; Ruz-Armendariz, Jaime ^[1]; Decker, Todd ^[1]; Brejhnolt, Nicolai ^[1]; Pivovaroff, Michael ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

This report provides a description of the simulation toolkit developed at Lawrence Livermore National Laboratory to support the design of nuclear safeguards experiments using grazing incidence multilayer mirrors in the energy band of uranium (U) and plutonium (Pu) emission lines. This effort was motivated by the data analysis of a scoping experiment at the Irradiated Fuels Examination Facility (IFEL) at Oak Ridge National Laboratory in FY13 and of a benchmark experiment at the Idaho National Laboratory (INL) in FY14 that highlighted the need for predictive tools built around a ray-tracing capability. This report presents the simulation toolkit and relevant results such as the simulated spectra for TMI, MOX, and ATM106 fuel rods based on spent fuel models provided by Los Alamos National Laboratory and for a virgin high ²⁴⁰Pu-content fuel plate, as well as models of the IFEL and INL experiments implemented in the ray tracing tool. The beam position and height were validated against the INL ~60 keV americium data. Examples of alternate configurations of the optics or experimental set-up illustrate the future use of the simulation suite to guide the next IFEL experimental campaign.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 1240928
• Report Number(s): LLNL-TR-677932; TRN: US1600690
• Country of Publication: United States
• Language: English

Related Subjects

98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
SPENT FUELS
SIMULATION
GAMMA RADIATION
PLUTONIUM 240
AMERICIUM
PLUTONIUM
URANIUM
DATA ANALYSIS
FUEL PLATES
FUEL RODS
MIRRORS
KEV RANGE
CONFIGURATION
DESIGN
EMISSION SPECTRA
OPTICS
SAFEGUARDS