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How-to Stop the Duo

Actions to Take

1. Quit Acquisition.
2. Select "COLUMNS" on CIPS main menu.
3. Click "stop source" (blue button)
4. Select DUO (select stop source now when prompted)
5. Click 'Apply'
6. Click OK
7. Turn DUO gas off (small knob on left hand side of DUO (when facing DUO)
8. Press VALID on the Cameca keyboard (look in lower lefthand corner): this disables the primary HV
9. [If O₂ flooding is enabled] Turn O₂ leak valve 1.5 turns clockwise to to stop O₂ flooding.