End of run diagnostics done. See ISAC elog. Supernanogan cart is already installed and at high vacuum. Prepare to run 17O from Sgan sometime over the weekend. Today's agenda:

1. Close 18O bottle and gas valves.

2. Isolate IOS:CG0 to minimize pressure contribution from long copper lines.

3. Work around gate valve interlocks.

4. Set up for leak checking: IOS first.

We did some preliminary vacuum checks, and found significant loading on the IOS turbos, probably downstream near DB6. Leak checking now in progress.