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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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 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.”
B. K. Shukla, K. Sathyanarayana, P. Chattopadhyay, Pragnesh Dhorajia, D. Bora
Fusion Science and Technology | Volume 52 | Number 1 | July 2007 | Pages 68-74
Technical Paper | doi.org/10.13182/FST07-A1486
Articles are hosted by Taylor and Francis Online.
In conventional electron cyclotron resonance heating systems, beam steering for current drive is achieved by rotating the mirrors of the launcher. Alternatively, it could be achieved remotely using a rectangular/square-corrugated waveguide (SCW). Symmetric beam steering is achieved at a length L (8a2/), where "a" is the width of the waveguide and "" is the wavelength of the microwave while at L/2 (4a2/) antisymmetric steering is seen. At a length of 2a2/, beam splitting into two equal lobes is observed.A low-power experiment on a remote steering antenna is carried out with an SCW at 2a2/ and a plane fixed mirror at the exit of the SCW, which diverts the microwave beam in one direction. The microwave instrumentation consists of a Gunn oscillator (82.6 GHz/~40 mW/TE10), an isolator, an attenuator, waveguides, and a mode converter (TE10 to HE11). The output of the mode converter is a 63.5-mm-diam corrugated waveguide, which couples the microwave beam to the SCW. The microwave power emerging from the waveguide is scanned in the far-field region using calibrated detectors. The power spectrum at the output of the SCW shows that the peak appears at the same angle input to the SCW. Effective steering is achieved for a smaller length of the waveguide at various input angles from 6 deg to 18 deg.