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- When the IP pressure (read on 3259 guage) is < 1 Torr, then start the PB turbo (VPTM:LI20:3175).
- If the oven turbo (VPTM:LI20:M3202) is already running then you can open valve 3201now3201 now.
- If it is not running, then first start the oven turbo, then open valve 3201.
- When the 3259 guage reads <1e-2 Torr then you can open the FV-DS1 and FV-DS2 valves to start pumping through the roughing pumps.
- If the foreline closes immediately then the pressure is still too high in the beamline and the interlock tripped
- To clear the foreline interlock:
- Open the "Foreline Vlv Intlks..." page from the DPS full schematic page
- Push "Reset Interlocks"
- Start the turbopumps:
- Open the DS1 turbo panel by clicking on the turbo symbol above "DS Stage 1" → Press Run
- Open the DS2 turbo panel by clicking on the turbo symbol above "DS Stage 2" → Press Run
- Confirm that the speed continues to increase. It should reach a nominal speed of ~27000 RPM after about 5 minutes and the vacuum should be reading on gauges 3259 and 3291 <1e-7 very quickly.
- If the CC guage 3291 is not reading while the 3259 gauge reads<1e-5, then you have to turn 3291 on manually
- Open the 3291 gauge panel
- Press "Turn on" beside the words "Cold Cathode HV"
- Confirm that it powers on after a few seconds
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