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User name Pitt
Log entry time 23:32:54 on April 19, 2012
Entry number 265586
keyword=Procedure for establishing beam at 3 uA (with locks off)
This is a listing of our usual procedure for establishing low current beam without locks (so I can refer to it from other run plans).
- Have MCC establish 3 uA of beam (with LH2 target is fine assuming raster is 4x4 mm^2) with the locks on.
- Take a snapshot of the beam positions (GUI obtainable from the general tools screen).
- Ask MCC to turn the locks off (that is the slow orbit lock "HallCOrb" lock and the fast feeback "SYS OFF" while maintaining 3 uA.
- Look at the beam positions, and see if they still are within ~ 0.3 mm of set positions. Take a snapshot of them.
- Make sure MCC keeps the locks off when you ask them to lower the current to the 100 nA range or less.