Yes, those whiretelights are a lot of fun. I have never seen a hese except In pics. Would very much like to play with one. As for the cadmium... I'm jealous.
I've seen one once on a lab tour. I didn't get to play with it. It was quite impressive and intense to see.
As for the IR hene. Its not listed in my signature due to the fact that its an EOL softseal tube. it struggles to light, so its days are numbered....I doubt you'd want it. I'm going to see if I can have it rebuilt...so when and if I do manage to fix it, I'll consider it...you probably can make better use of it despite its really crappy specs. As for the HeCd, I'd consider it, but if its dead its obviously of little use, and I don't have a place to put it and keep the glass-work safe except my basement, and I doubt my parents would dig having that around when it doesn't work...and I have no idea how or where I could rebuild one of those.
The HGR 2010 on the 271 exciter was last made in late 1988. Right before SP went to switching power supplies for large lasers. If you'd like to try a 24 year old tube, go for it. (DONT)
The HGR SP 2020 on the 271 exciter was last made in late 1988. Right before SP went to switching power supplies for large lasers. If you'd like to try a 24 year old tube, go for it. (DONT)
I've seen it, its not in great shape. It has a purge kit, which means it was ran as a UV system. That pushes hard on the tube.