Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

MicrowavesOFF.
NMRTaking Data
FridgeOnly the Backing Pump (Rotary Vane pump) should be running, and the rest of the roots pumps should be OFF
Adjust fridge RUN/Bypass valve (to ~0.5 turns) to keep the fridge LHe level around 50%, and then close the run valvebetween 50% and Heat-Ex Bottom.
In other words, let the fridge level drops down to 50% and then refill it up to Heat-Ex Bottom by opening the run-valve (then close it).
The fridge pressure should be on PID control at 100 Torr.
MagnetEnsure the magnet has enough LHe.
Discuss with the Target Expert when to implement Switching from Production Mode to Hold Mode
Ensure Magnet LN2 level is above 50%, if not refill it.
QT SystemEnsure the purifier LN2 level is above 50%, if not refill it.
Ensure both liquefiers are producing LHe with the rate of ~ 4 L/ hr.




Outlet Flows

...



How to check and control
Fridge       8 slm (should be on the PID controlled for maintaining 100 Torr by Auto Control with Pressure)How to control the Fridge Return flow
Separator       20 slmHow to control the Separator Return flow
Magnet     ~7 (on pressure PID at 0.9 psi)(link to a page)

...