[Hallc_running] [EXTERNAL] Proposed Beam Halo Study

Edward R Kinney Edward.Kinney at Colorado.EDU
Fri Mar 8 13:12:38 EST 2024


At the RC meeting today we decided it would be prudent to carry out a study of possible beam halo. Since we will run with raster off for many of the tests, we are limited to 5 uA beam current. The proposed runs (all raster off except where noted)


  1.  Out-of-beam, sweeper off (10 min)
  2.  Out-of-beam, sweeper on (10 min)
  3.  Carbon Hole, sweeper on (10 min)
  4.  Carbon Hole, sweeper off (10 min)
  5.  Halo, sweeper off (10 min)
  6.  Halo, sweeper on (10 min)
  7.  Halo, sweeper on, raster on (10 min)

Given overheads of target movement, possible ion chamber calibrations for the halo target, we expect this to take between 2 and 3 hours total.

The plan is to perform the study during tonight’s swing shift. Please send any comments/corrections!

Regards,
Ed
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