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- When the IP pressure (read on 3259 guage) is < 1 Torr, then start the PB turbo.
- 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
Restart the US-DPS:
- When the 3171 guage reads <1e-2 Torr then you can open the FV-US1 and FV-US2 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"
- To clear the foreline interlock:
- Close the manual valve to the TPS Compact (you can now vent and disconnect from the beamline)
- Start the turbos:
- Open the US1 turbo panel by clicking on the turbo symbol above "US Stage 1" → Press Run
- Open the US2 turbo panel by clicking on the turbo symbol above "US Stage 2" → Press Run
- Open the US3 turbo panel by clicking on the turbo symbol above "US Stage 3" → Press Run
- Open the US4 turbo panel by clicking on the turbo symbol above "US Stage 4" → 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 guages 3108, 3130, and 3171 are not reading while the 3259 gauge reads<1e-5, then you have to turn 3291 on manually
- Open the each CC gauge panel
- Press "Turn on" beside the words "Cold Cathode HV"
- Confirm that it powers on after a few seconds
Finishing up:
- When the pumps are up to speed → restart the DPS watcher!
- Open the watcher panel again: (facethome → Matlab GUIs... → GOTO watcher)
- Press "start" beside Diff. Pumping
- Wait for the red circle to turn green
- Check that all the pumps are still running and foreline valves are open (FV-US1, FV-US2, FV-DS1, and FV-DS2)
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