Assumptions:

• Fridge running − all pumps on

Prepare NMR:

• Stop beam, if necessary
• Turn off Microwaves, if necessary
• Put NMR into Monitor Mode

Prepare Fridge:

• Stop Roots Blower 3 by pressing the RB3 Stop Button (in electronics room)
• Wait 2 minutes for pump to spin down
• Stop Roots Blower 2 by pressing the RB2 Stop Button (in electronics room)
• Wait 2 minutes for pump to spin down
• Stop Roots Blower 1 by pressing the RB1 Stop Button (in electronics room)
• Open Main Gate Valve, PV91141, if necessary (in electronics room)
• Close Bypass RB3 Valve, PV91142, if necessary (in electronics room)
• Close Roughing Valve, PV91143, if necessary (in electronics room)
• Place Run Valve, EV91120, into Manual Mode (cryo computer)
• Close Run Valve by entering a manual setpoint of zero
• Close Bypass Valve, EV91121, if necessary, by entering a position of zero
• Put the Separator Valve, EV91127, into Computer Control (not Manual Mode)
• Enter a value of 60 into the Set Val box of the EV91127 control

Empty the Tail of Helium:

• DO NOT move the target without first informing MCC − you?’ll trip all Halls
• Move the target to the Top position, write in logbook
• Load the Anneal program (icon on desktop)
• Run the Anneal program (click white arrow on left of toolbar)
• Type in a setpoint of 60 (K) and hit "Send to ITC", write in logbook
• Hit the "Goto Setpoint" button to turn on the heater
• Observe the liquid level in the tail drop (7% is about the minumum reading)
• Wait 5 minutes after the liquid is gone
• Open the Run Valve to 0.3, write in logbook
• Move the target to Empty position, write in logbook
• (If Run Plan needs to do Carbon runs, this position is also OK)
• Use Lower camera to see the He4 pressure (Rack B, Device 5), write in logbook

Begin the Anneal:

• Wait until all three sensors stabilize at 60K, write in logbook
• Type the desired Anneal temperature into the setpoint, Hit "Send to ITC"
• Note in the logbook the time when the anneal temperature is reached
• Log Top Platinum, Top T/C, Bottom T/C, and He4 Pressure every 5−10 minutes
• Leave the target at the Anneal temperature for the desired number of minutes
• To stop the anneal, hit the "Stop Anneal" button, write in logbook
• Let the anneal program continue to run, to document the cooldown process
• Cool Down the Refrigerator:
• Change the setpoint of the Bypass Valve to 1.0
• Change the Manual setpoint of the Run Valve to 1.0
• Wait until the Nose Level, LL91112, reaches about 80%
• Change the setpoint of the Bypass Valve to 0.0
• Change the Run Valve back to computer control (not Manual Mode)
• Enter a value of 32 into the Set Val box of the EV91127 (Separator) control
• The the Stop button on the toolbar of the Anneal Program, and then close it
• Wait for the Nose Level to (mostly) stabilize
• Observe the He4 pressure
• If the pressure is not below 12 torr, temporarily close the Run Valve
• Once the pressure is below 12 torr, start RB1 (electronics room)
• Wait for the pressure to drop below 2.2 torr
• Start RB2
• Wait for the pressure to drop below 1.0 torr
• Start RB3
• If necessary, re−open the Run Valve or put it under computer control