United States · Watertown, MA · 42.371, -71.183 (approximate location)

AMRR Army Material Research Reactor

AMRR Army Material Research Reactor, a research reactor (pool) in Watertown, MA, United States, with 5 MW of thermal power, operated by Army Materials & Mechanics Research Center. 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. Its declared uses include neutron scattering, activation analysis and materials testing.

Country

United States

City

Watertown, MA

Type

Pool

Thermal power

5 MW

Operator

Army Materials & Mechanics Research Center

Status

Decommissioned

First criticality

1960

Purpose

Neutron scattering, activation analysis, materials testing

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