Well, it’s very old. It was old when I visited there in the 1970’s in my grad student days. I can’t make any judgement as to its current viabilty, although I would think it might be a unique resource.
OTOH, its primary mission has passed it by, I feel sure.
The primary mission of tandem was to feed RHIC. Tandem I know is running, and NASA uses RHIC, as well as various physics people.
It would be nice to know what else they do at Brookhaven.