Welcome, Henry!

You will find that it is very difficult to push any significant amount of UV light thru an enlarger. You might find enlarging negs the way to go with that, and then contact printing them under a UV light source. But don't let me stop you from trying -- you just might be able to do it! And there is a very fast-speed in-camera cyanotype process out there (Cyanotype rex, by Terry King) that might work with such an enlarger.

I have filed out a Omega D5 negative holder to include the rebate -- but not the edge itself -- you might look at glass negative carriers (w/ anti-newton ring glass).

And I have seen large canvases covered with liquid light!

Welcome, again! And have fun!

Vaughn