NDLI: Control Systems for Cryogenic THD/DT Layering at the National Ignition

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Control Systems for Cryogenic THD/DT Layering at the National Ignition

Content Provider	Semantic Scholar
Author	Fedorov, Michael A. Blubaugh, C. J. Edwards, Owen Dudley Mauvais, M. Y. Sánchez, Rubén J. Wilson, Bruce A.
Copyright Year	2011
Abstract	The National Ignition Facility (NIF) is the world largest and the most energetic laser system for Inertial Confinement Fusion (ICF), located at the Lawrence Livermore National Laboratory (LLNL). In 2010, NIF began ignition experiments using cryogenically cooled targets containing layers of tritium-hydrogen-deuterium (THD) or deuterium-tritium (DT) fuel. The 68 μm-thick ice layer is formed inside of a 2 mm target capsule at temperatures of approximately 18.3 Kelvin. The ICF target designs demand sub-micron smoothness of the THD/DT ice layer. Precise formation and characterization of such layers is a challenging task and still an active research area. It requires a flexible control system capable of executing evolving layering protocols. At NIF, this task is performed by the Cryogenic Target Subsystem (CTS) of the Integrated Computer Control System (ICCS). ICCS is a large-scale, distributed control system which integrates scientific instruments, control hardware and computing platforms under a common object-oriented architecture. The CTS provides precise cryogenic temperature control, advanced x-ray imaging capability, and monitoring of vacuum and gases. Equipped both with automatic software engines and an interactive development environment, the recently deployed control system has enabled first NIF cryo-layered target campaigns and supported layering research.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://digital.library.unt.edu/ark:/67531/metadc866841/m2/1/high_res_d/1114721.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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