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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.”
Akira Suda, Minoru Obara, Akira Noguchi
Fusion Science and Technology | Volume 11 | Number 3 | May 1987 | Pages 548-559
Technical Paper | KrF Laser | doi.org/10.13182/FST87-A25035
Articles are hosted by Taylor and Francis Online.
Atmospheric pressure operation of the electron-beam (e-beam)-excited KrF laser can greatly reduce the design constraints on a large-aperture laser module in the megajoule-class system as an inertial confinement fusion driver. The krypton-rich and Kr/F2 mixtures are suitable for the atmospheric pressure operation because these can produce high specific output energy without serious reduction of the intrinsic efficiency compared with conventional argon-rich mixtures. A 50-ns e-beam generator was used to pump the KrF laser oscillator by which fundamental studies of the KrF laser with atmospheric pressure krypton-rich mixtures were performed. A larger apparatus, using another 65-ns e-beam generator, demonstrated the specific output energy of 6.6 J/ℓ from a Kr/F2 mixture with an intrinsic efficiency of 6%. The latter apparatus was then used as an oscillator-amplifier system to investigate the amplifier characteristics of the KrF laser because the atmospheric pressure krypton-rich mixture is useful for large amplifier modules. In this oscillator-amplifier experiment, the power efficiency (extracted intensity divided by excitation rate and active length) in excess of 10% was obtained for krypton-rich mixtures.