ENES
United States United States · Pocatello, ID · 42.862, -112.451 (approximate location)

AGN-201 Idaho St. Univ.

AGN-201 Idaho St. Univ., a research reactor (homogeneous) in Pocatello, ID, United States, with 5 W of thermal power, operated by Idaho State University, Lillibridge Eng. Lab. Operating, first critical in 1967.

It is one of the 48 research reactors operating in the United States. It went critical 25 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). It is one of 15 homogeneous reactors operating worldwide, spread across 6 countries. It has been 59 years since its first criticality.

Country
United States
City
Pocatello, ID
Type
Homogeneous
Thermal power
5 W
Operator
Idaho State University, Lillibridge Eng. Lab
Status
Operating
First criticality
1967

Data: IAEA RRDB · updated on Sep 3, 2026

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