S1C Prototype
S1C Prototype, a research reactor (other) in Windsor, CT, United States, operated by Knolls Atomic Power Laboratory-Windsor Site. Decommissioned, first critical in 1959.
It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 17 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). Its declared uses include teaching and training.
- Country
- United States
- City
- Windsor, CT
- Type
- Other
- Thermal power
- critical
- Operator
- Knolls Atomic Power Laboratory-Windsor Site
- Status
- Decommissioned
- First criticality
- 1959
- Purpose
- Teaching, training
See also: every research reactor in United States · How research reactors work
Data: IAEA RRDB · updated on Sep 3, 2026