United States United States · Idaho Falls, ID · 43.533, -112.945 (approximate location)

SCRCE Spherical Cavity Experiment

SCRCE Spherical Cavity Experiment, a research reactor (heavy water) in Idaho Falls, ID, United States, with 1 W of thermal power, operated by Aerojet Nuclear Company. Decommissioned, first critical in 1969.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 27 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 10 heavy-water research reactors remain in operation today across 7 countries. Its declared uses include research, development and experiments.

Country
United States
City
Idaho Falls, ID
Type
Heavy water
Thermal power
1 W
Operator
Aerojet Nuclear Company
Status
Decommissioned
First criticality
1969
Purpose
Research, development, and experiments

Data: IAEA RRDB · updated on Sep 3, 2026

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