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Microwaves | OFF. |
NMR | Taking Data |
Fridge | Only 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. |
Magnet | Ensure 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 System | Ensure 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
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How to check and control | ||
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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 slm | How to control the Separator Return flow |
Magnet | ~7 (on pressure PID at 0.9 psi) | (link to a page) |
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