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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|Nuclear Thermal Propulsion
Tuesday, May 7, 2024|3:15–4:55PM MDT|Coronado/DeVargas
Session Chair:
Erofil Kardoulaki
Session Organizer:
Alternate Chair:
Scarlett W. Paisner
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Thermophysical Properties of a Uranium Nitride-Metal Composite Fuel for Nuclear Thermal Propulsion
3:15–3:40PM MDT
J.C. Schaeperkoetter (LANL), S. Widgeon Paisner (LANL), J.T. White (LANL), E. Kardoulaki (LANL), T.P. Coons (LANL), D.D. Byler (LANL), J. Rosales (NASA Marshall Space Flight Center), K.J. McClellan (LANL)
Paper
Addressing Localized Fuel Element Heating in a NERVA-Type HALEU Thermal NTP Design
3:40–4:05PM MDT
Steven Hoak (MIT), Koroush Shirvan (MIT)
TRIPLE: A Coated Particle Fuel Performance Code and its Preliminary Application for NTP Fuel Simulation
4:05–4:30PM MDT
Jongho Park (Seoul Nat'l Univ.), Youho Lee (Seoul Nat'l Univ.)
Initial Modeling of Three-Phase Fuel/Propellant Annulus Design for Centrifugal Nuclear Thermal Rockets
4:30–4:55PM MDT
Dakota Santana (Univ. Alabama, Huntsville), Keith Hollingsworth (Univ. Alabama, Huntsville)
