LTR Lattice Test
LTR Lattice Test, a research reactor (heavy water) in Aiken, SC, United States, with 500 W of thermal power, operated by DuPont Savannah River Site. Decommissioned, first critical in 1967.
It was one of the 340 research reactors the United States has had; 48 remain in operation today. It went critical 25 years after the first research reactor in the United States, CP-1, Chicago Pile 1 (1942). 10 heavy-water research reactors remain in operation today across 7 countries. Its declared uses include materials testing.
- Country
- United States
- City
- Aiken, SC
- Type
- Heavy water
- Thermal power
- 500 W
- Operator
- DuPont Savannah River Site
- Status
- Decommissioned
- First criticality
- 1967
- Purpose
- Materials testing
See also: every research reactor in United States · How research reactors work
Data: IAEA RRDB · updated on Sep 3, 2026