ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
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.”
A. V. Arzhannikov, V. T. Astrelin, A. V. Burdakov, I. A. Ivanov, V. S. Koidan, S. A. Kuznetsov, V. V. Konyukhov, A. G. Makarov, K. I. Mekler, V. S. Nikolaev, S. A. Novozhilov, S. S. Perin, S. V. Polosatkin, V. V. Postupaev, A. F. Rovenskikh, A. V. Savchkov, S. L. Sinitsky
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 17-24
Invited Review Lectures | doi.org/10.13182/FST01-A11963410
Articles are hosted by Taylor and Francis Online.
Progress in experiments towards increasing of confinement time of dense plasma in long open trap GOL-3-II is presented.1 This facility is an open trap with total length of magnetic system of 17 m. The main part of the facility is 12-meter-long solenoid with 4.7 T in homogeneous part and 9 T field in mirrors. The plasma heating is provided by a high-power electron beam with the total energy content of up to 200 kJ. The former phase of the GOL-3-II activity was completed with the achievement of high efficiency of collective relaxation of the beam in the plasma. Electron temperature of the plasma is up to 2-3 keV at 1015 cm−3 density. Energy confinement time is mainly determined by longitudinal thermal conductivity. The main aim of the recent activity on the GOL-3-II facility is to research the possibility of improvement of confinement of the dense plasma after its heating.
The GOL-3-II facility was essentially modified for this purpose. The 12-meter plasma column was separated from entrance solid electrode and an exit beam receiver by vacuum sections and expanders for decreasing of the longitudinal electron thermal conductivity. In addition, the magnetic field on a part of solenoid was transformed into multimirror (corrugated) configuration with the ratio Hmax/Hmin ~1.5 and 22 cm cell length. The problem of macroscopically stable transportation of the beam through the whole system was solved by creation of an artificial return current.
As a result of the experiments at modified facility the energy confinement time for the plasma with density of 5·1014÷2·1015 cm−3 range and with sub-keV temperature is increased at an order of magnitude.