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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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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|10:00–11:45AM EST
Session Chair:
Christopher M. Perfetti
Alternate Chair:
Vladimir Sobes
Session Organizer:
Staff Producer:
Mich Leana (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.
Validation of MCNP Critical Benchmark Models of PU-MET-FAST-016
Robert H. Mendleski (Los Alamos National Lab), Kristina Y. Spencer (Los Alamos National Laboratory), Ethan Moll (Los Alamos National Lab), Raymond F. Sartor (Los Alamos National Lab), Jennifer L. Alwin (Los Alamos National Laboratory), Wim Haeck (Los Alamos National Laboratory)
Paper
The Effect of ENDF/B-VIII.0 on Jezebel
Jeffrey A. Favorite (Los Alamos National Laboratory)
Determining the Induced-Fission χ Matrix and Vector Using MCNP6.2
Sensitivity of Bondarenko Self-Shielded Cross Sections to Nuclide Densities in PARTISN
