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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
August 2025
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The newest era of workforce development at ANS
As most attendees of this year’s ANS Annual Conference left breakfast in the Grand Ballroom of the Chicago Downtown Marriott to sit in on presentations covering everything from career pathways in fusion to recently digitized archival nuclear films, 40 of them made their way to the hotel’s fifth floor to take part in the second offering of Nuclear 101, a newly designed certification course that seeks to give professionals who are in or adjacent to the industry an in-depth understanding of the essentials of nuclear energy and engineering from some of the field’s leading experts.
Kohtaro Ueki, Yuichi Ogawa, Hiroshi Naito, Tomonori Hyodo
Fusion Science and Technology | Volume 7 | Number 1 | January 1985 | Pages 90-98
Technical Paper | Shielding | doi.org/10.13182/FST85-A24521
Articles are hosted by Taylor and Francis Online.
A 14-MeV neutron streaming through a narrow vertical hole duct in the diagnostics room of a Deuterium-Tritium Fusion Experimental Device (R tokamak) was analyzed using the Monte Carlo coupling technique. Neutron dose rate distributions in the horizontal direction as well as in the axial direction along the vertical hole duct were calculated to evaluate the neutron streaming effect through the hole duct. The dose rate distribution in the axial direction undergoes relatively small changes, but the distribution changed abruptly in the horizontal direction. Compared to ANISN results, Monte Carlo calculations show a neutron streaming effect at locations beyond the vertical hole duct axis in the horizontal direction. The fractional standard deviation (FSD) due to error propagation was calculated by the ORION code based on an error propagation equation. The FSDs were within 0.06 at the detector locations along the axial direction along the vertical hole duct; but, they were as much as 0.25 to 0.47 for >15 cm beyond the hole duct axis in the horizontal direction.
