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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
B. J. Peterson, S. Yoshimura, E. A. Drapiko, D. C. Seo, N. Ashikawa, J. Miyazawa
Fusion Science and Technology | Volume 58 | Number 1 | July-August 2010 | Pages 412-417
Chapter 8. Diagnostics | Special Issue on Large Helical Device (LHD) | doi.org/10.13182/FST10-A10826
Articles are hosted by Taylor and Francis Online.
Bolometers are a powerful tool for diagnosing plasma radiation in a reactor-relevant environment. Resistive and imaging bolometers have been applied to the Large Helical Device (LHD) to measure radiative phenomena. Installed on LHD are 56 channels of resistive bolometers at four different ports, providing total radiated power measurements and radial profiles with 5-ms temporal resolution. Calibration coefficients are seen to vary slightly year to year. Imaging bolometer foils are installed at four ports. Infrared cameras have been used at some of these ports to provide an image of the foil temperature, which can be analyzed to give an image of the radiated power absorbed by the foil. Upgrades of existing imaging bolometers using platinum foils and more advanced infrared cameras with frame rates of 345 and 420 frames/s (minimum time resolutions of 3 and 2.5 s, respectively) are introduced. Variations of the thermal parameters on thin platinum (2.5-m) foils are measured in a calibration experiment. The thermal properties of the foil can be quantified experimentally by measuring the responses of the foil temperature in the form of the peak change in temperature and thermal time (average of thermal decay and rise times) to a chopped HeNe laser. These measurements are made in 1-cm increments moving in two dimensions across the foil or at 63 separate locations. The imaging bolometers are intended to give images of complex three-dimensional radiative phenomena and ultimately provide the data for one-, two-, and three-dimensional tomographic inversions.