Performance Testing and Validation Plan for HMS4 Quantitative Gamma Measurements, K-25/K-27 D&D Project, East Tennessee Technology Park, Oak Ridge, Tennessee

J.W. Thiesing, Tom Donohoue, Jim McCague, Ray Martin, Ralph Royce and Troy Thomas

East Tennessee Technology Park (ETTP), Oak Ridge, TN

关键词: Calibration;    Oak Ridge;    Spectrometers;    46 Instrumentation Related To Nuclear Science And Technology;    Attenuation;   

RP-ID  :  BJC/OR-2930/R1
RP-ID  :  DE-AC05-98OR22700
RP-ID  :  949979

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Holdup Measurement System 4 (HMS4) is a portable thallium activated sodium iodide (NaI[Tl]) gamma ray energy spectrometer that, when properly calibrated, is able to make quantifiable assessment of U-235 holdup in the presence of other uranium isotopes and prevailing background radiation. The use and calibration of the HMS4 is based upon the methodologies defined by Russo in La-14206, (Russo 2005), where detection efficiency determination protocols are defined (called Generalized Geometry Holdup [GGH]). The GGH methodology together with attenuation correction algorithms and other modeling parameters are combined in the HMS4 software package to provide a comprehensive tool for conducting in situ gamma-ray measurements. The fundamental principles of these capabilities are discussed.