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France France · Aix-en-Provence · 43.673, 5.781

Phebus

Phebus, a research reactor (pool) in Aix-en-Provence, France, with 38 MW of thermal power, operated by CEN Cadarache. Shut down, first critical in 1978.

It was one of the 38 research reactors France has had; 2 remain in operation today. It went critical 30 years after the first research reactor in France, ZOE (EL-1) (1948). 48 pool-type reactors remain in operation today across 28 countries. Its declared uses include materials testing.

Country
France
City
Aix-en-Provence
Type
Pool
Thermal power
38 MW
Operator
CEN Cadarache
Status
Shut down
First criticality
1978
Purpose
Materials testing

Data: IAEA RRDB · updated on Sep 3, 2026

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