- Pump and purge the IVC with gN2 (at least 5 times). Make sure the pop-off valve on the magnet IVC is closed after each pump-purge cycle, and leave it closed.
- Check the LN2 level in the outside tank. Ask Jordan (FNAL) to order a refill for the outside LN2 tank.
- Pump-purge the separator space, and at the end of pump-purge cycles, keep the separator pump-out line pressurized and close the hand-valve in the cave.
- Pump-purge magnet space with measuring purity at each cycle.
- Pump-purge the fridge.
- Unscrew run, bypass valves (in the fridge), and take them out.
> Blow gHe through it.
> Spray dry lube - Ensure both QT Dewars are full (~200L).
- Ensure the entire system is leak-tight, and check the total gHe amount for several days.
- Check the vacuum jackets of the transfer lines.
- Check the oil levels in the roots-pumps.
- Ensure all the remote control valves are working
a) Magnet bypass
b) Gate valve bypass
c) Fridge run, bypass valves
d) Magnet Flow Controller
e) Separator Flow Controller - Check the AMI1700 level probe and controller are working properly.
- Check the LCW status for the past several days to ensure there is no issue with the LCW supply.
- Ensure warm gHe circulation tests are done.
- Check the outside gHe tank level and arrange a fill if needed.
(Ideal setting: both Liquefiers are full (~200L), and the outside tank is filled up to 60psi)