CryoFree Final Report Page: 3 of 9
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NA-24: Office of Nonproliferation and International Security
Office of International Safeguards NA-243
Final Report Q4/2006
Lawrence Livermore National Laboratory
Quarter: 4/2006 Date: Sept 30, 2006
B&R: NN4003070 Lab/Contractor: LLNL
Project Number: NNV801 Lab Point of Contact:
Burks, Morgan: (925) 423-2798
Project Title: Cryo-Free planar
LLNL Program Manager:
Dreicer, Mona (925) 422-7588
Summary: CryoFree, a gamma-ray spectrometer, has been built and successfully tested.
This instrument is based on a planar germanium semiconductor detector and is optimized
for high-resolution spectroscopy in the range of a 30 keV to a few hundred keV to detect
U and Pu. The spectrometer is cooled with a mechanical cryocooler that obviates the
need for liquid cryogen. Furthermore, the instrument is battery powered. The
combination of mechanical cooling and battery operation allows high-resolution
spectroscopy in a highly-portable field instrument. A description of the instrument along
with its performance is given.
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Burks, M. CryoFree Final Report, report, November 7, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc835627/m1/3/: accessed July 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.