[time-nuts] CS reservoir depletion - Where to buy a tube?
shawn at xmtservices.net
Fri Jan 14 01:28:27 UTC 2011
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?
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.
> 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 at 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 at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts