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Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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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.”
S. Lee, T. Kondoh, R. Yoshino, T. Cho, M. Hirata, Y. Miura
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 151-154
Topical Lectures | doi.org/10.13182/FST01-A11963429
Articles are hosted by Taylor and Francis Online.
An advanced diagnostic technique to measure the ion temperature and fast ions in open magnetic field systems is described. The method for the determination of deuterium to tritium ratio and the helium ash density in DT burning plasmas is also proposed. The measurement is made by small angle collective Thomson scattering (CTS) using a high power pulsed CO2 laser and heterodyne receiver system. The axial profiles can be measured by an axially injected beamline. Attenuation and refraction in the plasma are unimportant even for large devices. Scattered spectrum of the expected DT fusion plasma with currently developed laser and receiver system is presented. The component of scattered laser power nearly perpendicular to the magnetic field giving rise to ion cyclotron modulation of the scattered spectrum. Spectrum from pure deuterium and from D-T mixed plasma show the possibility of fuel ratio measurement. The scattered spectrum of D-T plasmas with thermalized helium ash is also calculated. Experimental arrangement to improve the S/N ratio in low density open magnetic systems are also discussed. The possibility of ion temperature and modulation measurement using a homodyne receiver system in GAMMA 10 are also evaluated.