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Equipment/High Vacuum Station: Difference between revisions
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Equipment/High Vacuum Station (view source)
Revision as of 23:30, 11 February 2012
, 11 February 2012Updated progress log
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After any use of the chamber for deposition purposes, it should be cleaned with fibre-less cloth and isopropyl alcohol. | After any use of the chamber for deposition purposes, it should be cleaned with fibre-less cloth and isopropyl alcohol. | ||
== | ===(proposed) usage rules=== | ||
Do not use without being trained. | |||
No mercury or mercury-containing products should be allowed in the chamber, due to potential vaporisation in backing-pump exhaust, pump oil/fluids contamination and use of aluminium manifolds which mercury will rot. | |||
No marshmallows. Or any other foodstuffs. Use the degasser. | |||
==Parts needed== | |||
Some [https://groups.google.com/forum/#!topic/london-hack-space/lqF1zd3baAY additional parts] will be needed. | Some [https://groups.google.com/forum/#!topic/london-hack-space/lqF1zd3baAY additional parts] will be needed. | ||
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All manifolds seem in good order and have been in use until recently. | All manifolds seem in good order and have been in use until recently. | ||
Diffusion pump heater and thermal cut-out both test as good with a meter. Wiring should be replaced however. Pump should be drained & cleaned as a precaution. Fluid should be measured and filtered/inspected. A temperature sensor could be installed on the drain port. | Diffusion pump heater and thermal cut-out both test as good with a meter. Wiring should be replaced however. Pump should be drained & cleaned as a precaution. Fluid should be measured and filtered/inspected. A temperature sensor could be installed on the drain port. | ||
~ Sci | |||
'''''04-02-2012''''' | |||
Post-xmas checkup on stored parts. Took some measurements of pump stack parts. | |||
Short video here: http://www.youtube.com/watch?v=3U_D1sNpXWc | |||
~ Sci | |||
'''''11-02-2012''''' | |||
Finished taking measurements of pump-stack parts. Inventoried vacuum pipe fittings. Have added scrap industrial control panel to parts pile (sounder works at 5v) as well as pressure-switch and 3 castors (4th currently errant). | |||
All parts so far are in imperial dimensions, large manifolds are all SpeediVac and smaller ones are GeneVac. | |||
Several of the parts have been modified by the previous owner, so I'm inclined to look for additional parts. Though [http://imajeenyus.com/vacuum/20060729_diff_pump_system/index.shtml others] have made do with copper pipe, I'd be concerned about trace-gas leakage through such thin material. Also we may need an additional bellows pipe section to get complete vibration-isolation from the backing pump (maybe. And only crucial for electron-microscope purposes). Will see if I have any compatible parts spare, and keep my eye on ebay. | |||
Also took dimensions of the storage-toilet as I presume, being the closest thing to a "clean room" available, it'll be where the pump system will live. So will constrain station dimensions to ensure it'll fit. | |||
Considering use of a large steel pipe-T (water main size, ~10" ID) to serve as a bell-jar/chamber with port for a large observation window. | |||
Chamber has some very simple adaptive manifold connectors it should be fairly easy to replicate/customise, as well as add more custom ports as need be. | |||
