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United States United States · San Luis Obispo, CA · 35.264, -120.662 (approximate location)

AGN-201 Cal Poly State Univ

AGN-201 Cal Poly State Univ, a research reactor (homogeneous) in San Luis Obispo, CA, United States, with 1 W of thermal power, operated by California Polytechnic State University. Decommissioned, first critical in 1973.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 31 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 15 homogeneous reactors remain in operation today across 6 countries. Its declared uses include teaching, training and activation analysis.

Country
United States
City
San Luis Obispo, CA
Type
Homogeneous
Thermal power
1 W
Operator
California Polytechnic State University
Status
Decommissioned
First criticality
1973
Purpose
Teaching, training, activation analysis

Data: IAEA RRDB · updated on Sep 3, 2026

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