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• The magnet already contains LHe, i.e. the magnet LHe level > 0%.
• The fridge valves (i.e. run and bypass valves) are fully closed.
• You can access and control the QT HMI and the Cryo Control Panel (CCP).
• You can access the strip charts on the data-summary page, particularly these preset pages;
  
  • Transfer-Line Cool Down:  https://e906-gat1.fnal.gov/data-summary/e1039/target-par-preset/cool_down.php
  • LHe Transfer:  https://e906-gat1.fnal.gov/data-summary/e1039/target-par-preset/transfer.php

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1. You will see an alarm when Tank B at 4.6 K, at that time set ensure that the Dewar B pressure to at 3psi and leave the Dewar A pressure as it is (6at 5.5 psi).
   This step needs some time estimate depending on how long each Dewar takes to reach the set pressure.
2. Monitor the magnet level reaching the seam (when Tank B is around ~4.8 K)
3. Switch the Magnet level probe to "CONT".
4. At right before the fill, open the run valve to 3 turns for 3 mins and put it back to 0.8 turns.
5. Start pre-cooling by opening VJVBVJVA first (this is to pre-cool the line A assuming that the line A is relatively colder then we switch filling from B→A; we will have to pre-cool line B in the next step).
6. When TX1 reaches ~100 K, then pre-cool line B by opening VJVB and close VJVA.
7. Ensure TX1 ~100 K or below, then open Mag return bypass fully, open VJVT, and close VPC.
8. Switch the Dewar B to Manual mode and set FC501 B to 45slm, and monitor FMR.
9. Monitor until the Dewar B level reaches 12 L, and then open VJVA to pre-cool until it reaches 9 L.
10. Close VJVB. Now you are filling from A. Magnet Pressure may have a pressure spike. After the pressure spike set Dewar B A to Manual mode and set FC501A to 45slm.
11. Switch LQ-B to Auto + Liquefy mode, and set the Dewar pressure back to 6.5 psi.
12. Adjust the flow FC501A  to keep FMR below 480slm, PC1 below 1.1 psi, and magnet pressure below 2.5 psi.
13. At the end of the fill, Open VPC, Close VJVA, and VJVT. Also, ensure VJVB is closed.
14. Switch LQ-A to Auto + Liquefy mode, and set the Dewar pressure back to 6.5 psi.
15. Set the Magnet Bypass to pressure PID to 0.9 psi.
16. Switch the Magnet level probe back to "HOLD" mode.

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