We're not looking for super high-vacuum though are we? Maybe we can get away with borrowing the small turbo pumping station from the suspensions lab to pump it down and then we can just valve it off.
Also, we have the cylinder head for a tank of helium now so we should order in a tank to try that (the tanks get delivered really fast so that shouldn't be a problem). Of course we'll at least need windows before doing that.
I've asked Gina to check on the CVI W2 window order. The order went in on 22nd July and CVI said that they had them in stock.