- If this is a ramping-down for the first time after a long time (i.e magnet was ramped-up after a long time since it was turned-OFF), then you should verify the magnetic field as the first step.
Skip to the Step #2 if this is not the case. Verify that the shim PS (the bottom one in the following picture) is powered ON. If not, turn it on and check why it was off.- This step is not necessary at present, since we keep the shim PS ON during the commissioning.
- This step is not necessary at present, since we keep the shim PS ON during the commissioning.
- Confirm that the main and shim switch heaters are OFF. If not, something is wrong.
Also, the two LED bulbs Z1 and ZY-Z2 are OFF (see the bottom module of the above picture).
- Set "74.51 47 A", using the Presets selector. The ramp rate becomes "0.5 A/m" but it will not matter.
- Press "To Set" and wait until the current becomes the SP and "HOLD". It takes 2.5 minutes.
→ after ~2.5 minutes → 
Confirm that "Clamped" nor "Quench" is "No" on the VI.
not red (if you can go into the hall).
- Press the Toggle button of the main switch heater. It turns on both the main and shim switch heaters.
When you do this step, you should see the two LED bulbs Z1 and ZY-Z2 are ON.
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