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
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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 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. 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. Bruschi, S. Cirant, A. Moro, A. Simonetto
Fusion Science and Technology | Volume 53 | Number 1 | January 2008 | Pages 97-103
Technical Paper | Special Issue on Electron Cyclotron Wave Physics, Technology, and Applications - Part 2 | doi.org/10.13182/FST08-A1657
Articles are hosted by Taylor and Francis Online.
A hybrid quasi-optical waveguide resonating device providing millimeter-wave beam switching and combination at high power is described in this paper. It can be realized, starting from the beam-splitting properties of the rectangular corrugated waveguide with aperture much greater than the wavelength , by arranging the waveguides in a resonating ring configuration. This kind of waveguide, cut at an appropriate length, has been proposed for the remote steering (RS) system of the ITER upper electron cyclotron resonance heating (ECRH) launcher, because of its imaging properties. In fact, beam steering can be performed far from the plasma edge since an input beam is transformed into an output beam with the same angle with the waveguide axis as the input one. Multiple imaging properties, derived by the fractional Talbot effect, are applied at waveguide sections cut at fractional lengths and lead to 3-dB beam-splitting properties for a length equivalent to half the length of an RS waveguide. Ring-type resonant devices with two outputs are obtained by setting two or more waveguides in properly arranged loops. The power distribution in the two output channels available can be controlled either mechanically, moving the mirrors used to couple the different sections by fractions of the wavelength , or varying the source frequency by a fraction / << 1. The exploitation of a second input port allows beams of different gyrotrons with nearly the same frequency to be coupled to the same transmission line. This relatively compact device can be evaluated for application into the ITER ECRH transmission line, with advantages on beam routing control.