Designs / dsn-ziacore
ZiaCore
Los Alamos National Laboratory’s heat-pipe-cooled microreactor design uses uranium-dioxide fuel and graphite and zirconium-hydride moderators. LANL report LA-UR-26-26997 distinguishes the full design from the 2026 critical experiment, which tested a representative portion using the Deimos testbed and an existing Comet critical assembly. That experiment is not counted as a separate deployed ZiaCore power reactor. Design output and commercial availability are unknown.
- Class
- Microreactor
- Technology
- Other
- Coolant
- other
- Spectrum
- unknown
- Developer / vendor(s)
- Los Alamos National Laboratory
- Fuel form
- UO2
- Inclusion basis
- microreactor_labeled
- Confidence
- high
- Last verified
- 2026-10-13
Tracked deployment projects
- No projects tracked here.
Design sources
- LANL LA-UR-26-26997: ZiaCore Critical Experiment Demonstrates Key Technologies for Nuclear Energy Systems (government_primary, dated 5 Aug 2026, accessed 2026-10-13)