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The following procedures suppose that you use the remote control interface (i.e. Cryo Control Panel; CCP). When you use the front panel of the magnet PS, some button operations are different.
Precautions
No operation can be made when the magnet is being filled with LHe.
- A time to ramp up/down the magnet should be planned in advance, since it takes at least 1.5 hours.
To Ramp Up
- Confirm that the shim PS is powered ON (if you can go in the hall).
- Press "To Zero".
- Press the Toggle button of the main switch heater. It turns on both the main and shim switch heaters.
- When you use the PS front panel, you press additionally the two buttons of the shim switch heaters on CCP, to turn them on.
- Confirm that the two LEDs on the shim PS are ON (if you can go into the hall).
- Set "2 A/m" and "45 A".
- You can use the "Presets" selector, or enter the values into the text boxes.
- Press "To Set" and wait until the current becomes the set point (SP) and "HOLD". It takes 23 minutes.
- Set "1 A/m" and "63 A".
- Press "To Set" and wait until the current becomes the SP and "HOLD". It takes 18 minutes.
- Set "0.5 A/m" and "74.78 A".
- Press "To Set" and wait until the current becomes the SP and "HOLD". It takes 24 minutes.
- Switch to the persistent mode, if you want.
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