On 9/1/2010 12:18 PM, Bob Camp wrote: > Hi > > My guess is that you put the adjuster entirely inside the vacuum enclosure. > Pump the gizmo down, stabilize it, measure where it's at. Do some math, pop > it open move the adjuster x.xx turns. Step and repeat. Possibly have a fine > and a coarse mechanical adjust screw. How about getting really evil. Why not just deform the cavity for coarse adjustment and rely on elastic deformation for fine? > It's a one time only sort of thing. You can afford to do it the hard way. or the dirty evil way ;-) > Another option would be to allow the screws to come through the envelope and > leak a little bit during the adjust process. Once you were done with > adjustment, seal them up with a low out gassing epoxy. Given the quality of vacuum the manual seems to imply, I'm guessing this wont cut it. I'll bet that even low impurity Teflon has a long bakeout period. > My guess is that > would be a problem thermally. If you need 0.001C gradients, you can't have > more than one thermal path to the cavity. > > That's all getting complicated, and we're only talking about the easy to > understand and address stuff... > > My understanding is that the guys at Kvarz spent years poking at their > design in the secret back room before it worked as well as it does today. I've been told that this is business is still highly empirical, so that tracks. > Bob Oz (in DFW - Rich Osman)
-- mailto:[email protected] Oz POB 93167 Southlake, TX 76092 (Near DFW Airport) _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
