LANL’s ZiaCore microreactor reaches criticality

August 3, 2026, 12:49PMNuclear News
The top flange of the ZiaCore microreactor experiment. (Photo: LANL)

Last week, Los Alamos National Laboratory announced that its ZiaCore microreactor was brought to zero-power criticality at high temperatures in April through May of this year during four weeks of experiments on the Deimos testbed at the National Criticality Experiments Research Center (NCERC).

LANL’s ZiaCore microreactor reaches criticality

August 3, 2026, 12:43PMNuclear News
The top flange of the ZiaCore microreactor experiment. (Photo: LANL)

Last week, Los Alamos National Laboratory announced that its ZiaCore microreactor was brought to zero-power criticality at high temperatures in April through May of this year during four weeks of experiments on the Deimos testbed at the National Criticality Experiments Research Center (NCERC).