High-Energy Neutron Imaging Development at LLNL

Hall, J M ; Rusnak, B ; Shen, S

Lawrence Livermore National Laboratory

关键词: 46 Instrumentation Related To Nuclear Science And Technology;    43 Particle Accelerators;    Lawrence Livermore National Laboratory;    42 Engineering;    Neutrons;   

DOI  :  10.2172/15014755
RP-ID  :  UCRL-TR-209954
RP-ID  :  W-7405-ENG-48
RP-ID  :  15014755

美国|英语

来源: UNT Digital Library

【 摘 要 】

We are proceeding with the development of a high-energy (10 MeV) neutron imaging system for use as an inspection tool in nuclear stockpile stewardship applications. Our goal is to develop and deploy an imaging system capable of detecting cubic-mm-scale voids, cracks or other significant structural defects in heavily-shielded low-Z materials within nuclear device components. The final production-line system will be relatively compact (suitable for use in existing facilities within the DOE complex) and capable of acquiring both radiographic and tomographic (CT) images. In this report, we will review our recent programmatic accomplishments, focusing primarily on progress made in FY04. The design status of the high-intensity, accelerator-driven neutron source and large-format imaging detector associated with the system will be discussed and results from a recent high-energy neutron imaging experiment conducted at the Ohio University Accelerator Laboratory (OUAL) will also be presented.