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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.”
Tomoyuki Johzaki, Kunioki Mima, Yasuyuki Nakao, Tomohiro Yokota, Hiroyuki Sumita
Fusion Science and Technology | Volume 43 | Number 3 | May 2003 | Pages 428-436
Technical Paper | Fast Ignition Targets and Z-Pinch Concepts | doi.org/10.13182/FST03-A288
Articles are hosted by Taylor and Francis Online.
To investigate core plasma heating in fast ignition, a relativistic Fokker-Planck code for fast electrons is developed in a one-dimensional planar coordinates system. It is found that in dense plasmas, the Joule heating is much smaller than the heating through Coulomb interactions. In the latter energy deposition process, the long-range collective effect is comparable to that of binary electron-electron collisions. Moreover, on the basis of coupled transport-hydrodynamic simulations in one-dimensional planar geometry, the core heating process for an ignition-experiment-grade compressed core (R = 0.3 g/cm2) is examined, and a possibility of evaluation of burn history from the neutron spectrum is shown. It is shown that a relatively low energy component (E0 1 MeV) of electron beams plays an important role for effective core heating in fast ignition.