Ulysse
Ulysse, a research reactor (other) in Gif-sur-Yvette, France, with 100 kW of thermal power, operated by CEA Saclay. Shut down, first critical in 1961.
It was one of the 38 research reactors France has had; 2 remain in operation today. It went critical 13 years after the first research reactor in France, ZOE (EL-1) (1948). Its declared uses include teaching and training.
- Country
- France
- City
- Gif-sur-Yvette
- Type
- Other
- Thermal power
- 100 kW
- Operator
- CEA Saclay
- Status
- Shut down
- First criticality
- 1961
- Purpose
- Teaching, training
See also: every research reactor in France · How research reactors work
Data: IAEA RRDB · updated on Sep 3, 2026