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Message ID: 25     Entry time: Fri Jun 19 11:59:49 2009
Author: Damien Gallop 
Type: Routine 
Category: General 
Subject: 16On+ emittance scans continue 

Keerthi developed a nice 16O7+ beam to FC6 last night. Beam current is about 3nA presently. Here is the first emittance scan from 11:05 today. A little spotty, but it's there. Higher resolution scan at 13:58 follows.

The third plot at 16:12 is 16O6+.

The fourth plot at 17:05 is a 16O5+ scan. However, the emittance rig stopped scanning at position #50, and is frozen at position #0 now. The operators are looking into it, and will reboot IOSIOC. I am ready to restore optics. Later... reboot and restore went well. Continue emittance scans.

The fifth plot at 18:36 is a higher res 16O5+ scan.

The sixth plot at 18:52 is 16O4+ and friends.

The seventh plot at 19:12 is 16O3+. It does not compare well with yesterday's scan of the same beam. Note that recovery from yesterday's IOSIOC reboot required a retuning effort. The source RF was changed in the interim also.

The eigth plot at 19:34 is 16O2+ and friends.

The ninth and final (for tionight) plot at 19:53 is 16O1+ and friends.

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