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United States United States · Lowell, MA · 42.639, -71.315 (approximate location)

UMLR Univ. Mass. Lowell

UMLR Univ. Mass. Lowell, a research reactor (pool) in Lowell, MA, United States, with 1 MW of thermal power, operated by UML Radiation Laboratory. Operating, first critical in 1975.

It is one of the 48 research reactors operating in the United States. It went critical 33 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). It is one of 48 pool-type reactors operating worldwide, spread across 28 countries. Its declared uses include teaching.

Country
United States
City
Lowell, MA
Type
Pool
Thermal power
1 MW
Operator
UML Radiation Laboratory
Status
Operating
First criticality
1975
Purpose
Teaching

Data: IAEA RRDB · updated on Sep 3, 2026

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