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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
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.