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Conference Spotlight
2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
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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|Radioisotope Power Systems
Thursday, May 9, 2024|10:00–11:40AM MDT|Sweeney A
Session Chair:
Nick Wozniak (LANL)
Session Organizer:
Alternate Chair:
Joe Giglio (INL)
To access paper attachments, you must be logged in and registered for the meeting.
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Development of Small-Sized Stirling Radioisotope Generator
10:00–10:25AM MDT
Yongrok Jeong (KAERI), Jong-Bum Kim (KAERI), Sunjin Kim (KAERI), Jin-Joo Kim (KAERI), Jin Kim (KAERI), Gujin Kang (KAERI), Suk-cheol Kwon (KAERI), Jintae Hong (KAERI)
Paper
Assembly, Integration, and Initial Test Results of a Stirling Radioisotope Power System Generator Testbed
10:25–10:50AM MDT
Ernestina Wozniak (NASA Glenn Research Center), Salvatore Oriti (NASA Glenn Research Center), Natasha Jackson (HX5 Sierra), Tyler Steiner (NASA Glenn Research Center)
Presentation Slides (Visible to Attendees)
High Efficiency Stirling Radioisotope Power System Development and Mission Application
10:50–11:15AM MDT
Leo Gard (Aerojet Rocketdyne), Erik Scougal (Aerojet Rocketdyne), Aaron Poehls (Aerojet Rocketdyne), Erich Soendker (Aerojet Rocketdyne), Hannah Sargeant (Space Park Leicester), Emily Jane Watkinson (Space Park Leicester), Ramy Mesalam (Space Park Leicester), Richard Ambrosi (Space Park Leicester), Alessandra Barco (Space Park Leicester), Marzio Mazzotti (Space Park Leicester)
Relevant Environment Demonstrations of Sunpower Robust Stirling Convertors for Radioisotope Powered Missions
11:15–11:40AM MDT
Tyler R. Steiner (NASA Glenn Research Center), Daniel D. Goodell (NASA Glenn Research Center), Matthew D. Stang (NASA Glenn Research Center)
