United States · Lemont, IL · 41.675, -87.998 (approximate location)

ATSR Argonne Thermal Source

ATSR Argonne Thermal Source, a research reactor (pool) in Lemont, IL, United States, with 10 kW of thermal power, operated by US DOE. Decommissioned, first critical in 1960.

It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 18 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 48 pool-type reactors remain in operation today across 28 countries.

Country

United States

City

Lemont, IL

Type

Pool

Thermal power

10 kW

Operator

US DOE

Status

Decommissioned

First criticality

1960

See also: every research reactor in United States · How research reactors work