The first research reactor was built in 1953, scaled up in 1957 and 1960 (referred to as R-1, R-2, and R-3), and finally deactivated in 1973 to make way for the PULSTAR reactor.
The first research reactor was built in 1953. The first research reactor was scaled up in 1957 and 1960 (referred to as R-1-3). The first research reactor was scaled up in 1957 and 1960 (referred to as R-R-2-3). The first research reactor was scaled up in 1957 and 1960 (referred to as R-R-3). The first research reactor was finally deactivated in 1973. This was to make way for the PULSTAR reactor.