Conveniently scheduled for BC Day, we are preparing to switch over the MWS to sputter operation with MG source material. Operations has saved present 21Ne tune.

Later... Done! Source is relit with 21Ne beam on FC6.

Summary:

• Vent IOS to Ar
• Remove MWS backplate
• Machine Mg metal disk (source material) for mounting screws
• Hand-cut Mg disk in two halves and clean
• Clean backplate
• Attach disk halves to backplate
• Clean assembly
• Reassemble at OLIS
• Pump - roughout was fast
• Pump - turbos on
• Minor MRO
• Button up and go with previous settings.

We will let it run this way overnight and shoot for an Mg plasma and beam tomorrow.

Attached below are plots of the last few hours of 21Ne beam. PDG, I'd say. Note the variation in sync with room temperature.