||04-30-13 11:24 PM
Originally Posted by mkeller234
What is that? It does look really cool.
Oh yeah, ha. Sorry.
It's a vacuum chamber for a pulse plasma experiment in the lab I work in. Should be sealed up tight enough to achieve pressures of 10^10 torr (for reference: a torr is 1/760th of an atmosphere
). The seals are those copper rings in the picture with the quarter, the covers are torqued so the knife edge deforms the copper and creates a seal. The chamber is a salvaged unit (with ports upon ports with some extra ports thrown in for good measure), but the hardware and the covers (the large covers are about $200 a pop) are all brand spanking new.
I believe the thinking is that inside the vacuum, a plasma will be submitted to an electromagnetic field with the hopes that the field creates a point of compression and, ideally, thermonuclear fusion
Or, it's a time machine. Who knows- I'm just paid to turn wrenches.
Originally Posted by DiegoFrogs
Leak checking a chamber that complex must be a horrible pain in the behind! Is it some kind of deposition tool?
That comes tomorrow, should be a party. Thankfully leaks into a vacuum aren't that difficult to find with an active pump and a pressure gauge- squirting just about any liquid on the flanges of a port will, if there's a leak, draw the liquid in, and then the liquid will expand rapidly, increasing the pressure by a power of 10 or more. It's pretty obvious. That doesn't mean it won't be tedious though.
As a total aside, when I worked fixing cars, one of the most tried and true ways to find a vacuum leak was to wave an unlit propane torch around the vacuum lines of an idling engine and listen for the increase in idle speed.