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Conference Spotlight
2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
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Nuclear Science and Engineering
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May 2026
Latest News
Antares achieves zero-power criticality at INL
Leveraging more than $140 million in private capital fundraising, over 322,000 square feet of operational manufacturing space, and multifaceted partnerships with the Departments of Energy and Defense, reactor start-up Antares has become the first company involved in the Reactor Pilot Program to achieve zero-power fueled criticality—a full month ahead of the July 4 deadline set by President Trump’s Executive Order 14301.
This milestone, announced yesterday, was achieved with the company’s Mark-0: a sodium heat-pipe-cooled, TRISO-fueled microreactor. The Mark-0 is a forerunner to the company’s flagship design, which it calls the R1. For Antares, this development represents a key validation of its reactor physics, control systems, and supply chain.
Technical Session|Sponsored by NCSD
Thursday, November 19, 2020|2:30–4:15PM EST
Session Chair:
William J. Marshall
Alternate Chair:
Travis M. Greene
Session Organizer:
Vladimir Sobes
Staff Producer:
Kathy Murdoch (American Nuclear Society)
To access the session recording, you must be logged in and registered for the meeting.
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To access paper attachments, you must be logged in and registered for the meeting.
Feasibility Study for a Proposed Subcritical Assembly at Oak Ridge National Laboratory
Douglas G. Bowen (Oak Ridge National Laboratory)
Paper
VADER: A Tool for Criticality Safety Validation
Justin B. Clarity (Oak Ridge National Laboratory), Shane W. Hart (Oak Ridge National Laboratory), William Wieselquist (Oak Ridge National Laboratory), William J. Marshall (Oak Ridge National Laboratory)
Updated Primers Generated for SCALE 6.2 for KENO V.a and KENO-VI
Kursat B. Bekar (Oak Ridge National Laboratory), Justin B. Clarity (Oak Ridge National Laboratory), Mathieu Dupont (Oak Ridge National Laboratory), Robert A. Lefebvre (Oak Ridge National Laboratory), William J. Marshall (Oak Ridge National Laboratory), Ellen M. Saylor (Oak Ridge National Laboratory)
Improved Runtime Performance in KENO-VI Models Using Arrays and Holes
William J. Marshall (Oak Ridge National Laboratory), Bret D. Brickner (Holtec International)
The Need for a Maximum Intensity Accident in ANS 8-Series Standards
Timothy Jackson (Y-12), James Yugo (Y-12), Jeff Goodman (Y-12)
