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Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
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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!
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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.”
T. Cho, J. Kohagura, M. Hirata, T. Numakura, R. Minami, T. Okamura, T. Sasuga, Y. Nishizawa, M. Yoshida, M. Yoshikawa, Y. Nakashima, Y. Sakamoto, T. Tamano, K. Yatsu, S. Miyoshi
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 151-155
Oral Presentations | doi.org/10.13182/FST99-A11963841
Articles are hosted by Taylor and Francis Online.
(i) A scaling law and its physics mechanism of potential formation for tandem-mirror plasma confinement are investigated. The first result of a generalized scaling covering over two typical plasma operational modes in the GAMMA 10 tandem mirror is presented; that is, a previously obtained potential-formation scaling in a plasma operational mode with a few-kV confinement potentials is found to be extended and generalized to a potential scaling in a hot-ion operational mode with thermal-neutron yield, when we take account of the dependence of potential formation on the ratio of the plug to the central-cell densities as well as the relation of electron temperatures in the central cell to thermal-barrier potentials. The finding of the existence of the same physics basis underlying in these two typical modes may provide the future possibility of simultaneously obtained hot-ion plasmas with high potentials. (ii) For these scaling studies, we have constructed the physics fundamentals of x-ray diagnostics; that is, we proposed a novel theory on the energy response of a widely utilized semiconductor x-ray detector. The theory solves a serious problem of a recent finding of the invalidity of the conventional standard theory on the response of such an x-ray detector; the conventional theory has widely been believed and employed over the last quarter of the century in various research fields including plasma-electron researches in most of plasma-confinement devices. The novel theory on the semiconductor x-ray response is characterized by the inclusion of a three-dimensional diffusion of x-ray-produced minority carriers in the field-free substrate of a detector, while the conventional theory is based only on the charges from an x-ray-sensitive depletion layer (i.e., the region of a p-n junction). Various and serious effects of the novel theory on the determination of electron temperatures and their radial profiles (i.e., the electron-temperature gradient) are also represented.