MCF
MCF, a research reactor (critical assembly) in Saitama, Japan, with 200 W of thermal power, operated by Mitsubishi Central Research Institute. Decommissioned, first critical in 1969.
It was one of the 27 research reactors Japan has had; 9 remain in operation today. It went critical 12 years after the first research reactor in Japan, JRR-1 (1957). 44 critical assemblies remain in operation today across 12 countries.
- Country
- Japan
- City
- Saitama
- Type
- Critical assembly
- Thermal power
- 200 W
- Operator
- Mitsubishi Central Research Institute
- Status
- Decommissioned
- First criticality
- 1969
See also: every research reactor in Japan · How research reactors work
Data: IAEA RRDB · updated on Sep 3, 2026