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Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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Fusion Science and Technology
Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Andrew T. Anderson, Alan K. Burnham, Michael T. Tobin, Per F. Peterson
Fusion Science and Technology | Volume 30 | Number 3 | December 1996 | Pages 757-763
Plasma-Facing Components: Analysis and Technology | doi.org/10.13182/FST96-A11963026
Articles are hosted by Taylor and Francis Online.
This paper discusses results of modeling and experiments on the x-ray response of selected materials relevant to the NIF target chamber design. X-ray energy deposition occurs in such small characteristic depths (on the order of a micron) that thermal conduction and hydrodynamic motion significantly affect the material response, even during the typical 10-ns pulses. The finite-difference ablation model integrates four separate processes: x-ray energy deposition, heat conduction., hydrodynamics, and surface vaporization.
Experiments have been conducted at the Nova laser facility in Livermore on the response of various materials to NIF-relevant x-ray fluences. Samples of fused silica, silicon nitride, boron carbide, boron, silicon carbide, carbon, aluminum oxide, and aluminum were tested. The response was diagnosed using post-shot examinations of the surfaces with scanning electron microscope (SEM) and atomic force microscope (AFM) instruments. On the basis of these observations, judgments were made about the dominant removal mechanisms for each material. The relative importances of these processes were also investigated with the x-ray response model.