Canada Canada · Hamilton, ON · 43.243, -79.989 (approximate location)

MNR McMaster University

MNR McMaster University, a materials test reactor (MTR) in Hamilton, ON, Canada, with 3 MW of thermal power, operated by Nuclear Reactor Laboratory. Operating, first critical in 1959.

It is the most powerful research reactor in Canada, of the 4 currently operating. It went critical 14 years after the first research reactor in Canada, ZEEP (1945). It is one of 5 materials test reactors (MTR) operating worldwide, spread across 5 countries. Its declared uses include isotope production, neutron scattering, neutron radiography and silicon doping.

Country
Canada
City
Hamilton, ON
Type
Materials test reactor (MTR)
Thermal power
3 MW
Operator
Nuclear Reactor Laboratory
Status
Operating
First criticality
1959
Purpose
Isotope production, neutron scattering, neutron radiography, silicon doping, transmutation, training, activation analysis, geochronology

Data: IAEA RRDB · updated on Sep 3, 2026

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