So, Has anyone priced a replacement for a 5061 tube lately? I thought I saw upgrade kits from one of the other vendors in magazine once. Where does that path take you? Anyone?
Shawn On Thu, 2011-01-13 at 15:02 +0100, Adrian wrote: > Sure it would be lots of fun making your own tube or rebuilding a bad one. > > This, my favorite internet video, is not exactly about caesium beam > tubes, but at least shows some of the required skills, as well as how > much fun it can be. > > http://dailymotion.alice.it/video/x3wrzo_fabrication-dune-lampe-triode_tech > > Adrian > > > Tom Van Baak schrieb: > >> Now that we are discussing how to restore Rb lamps. > >> Has anyone given any thought to refilling or refluxing the Cs in > >> depleted Cs tubes? > > > > Oh yes, after I ran into my first dead Cs and found the > > price of a replacement tube, you bet I wondered if they > > could be refilled. I mean, the same hp also made printers > > and you can refill them. What could be more natural. But > > a couple of events over the years dashed all my hopes. > > > > First I got my first opened Cs tube, from an 5061A that > > Corby had. I have no idea how you'd open one, do the > > brain surgery, and put it back together with the same > > purity and mechanical precision that it first was. > > > > Second, running out of cesium is not always the problem. > > Think about where the cesium goes. When a printer runs > > out of ink it's because it has printed tens of thousands of > > pages. The pages take the ink with them and the printer > > stays fairly clean. But where does the cesium go? It's all > > still inside, every single atom of it. On the walls, on the > > magnets, in the getter, and stuck on the dynodes of the > > electron multiplier. So even if you could add more Cs to > > the oven on one end, perhaps the harder job would be to > > clean up all the cesium residue that's everywhere else. > > It would be like adding more and more fresh oil to a car > > but never emptying the oil pan. > > > > Third, I got a tour of the hp factory in Santa Clara where > > the tubes were made. I was humbled. The clean room, the > > precision, the tiny EM, the vacuum stuff, the oven assembly, > > the one-time diaphragm that seals the oven pin hole, the > > wiring, the testing, the people, the decades of knowledge, > > the infrastructure. > > > > Instead what would be fun is for someone to try to make > > their own tube. Save yourself some work and re-use all the > > electronics of a 5061A. But make your own tube. Even > > re-use as many parts of an existing tube as you want. But > > make your own instead of trying to put Humpty Dumpty > > back together again. > > > > /tvb > > > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
