[Halla_running] [Revised Logentry] Follow-up Re: RC daily update: Status

[efuchey at jlab.org]

Logentry Text:
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Jessie walked back a few minutes ago, and provided me an update. He has completed the tests he wanted to do on the beamline vacuum. All clear.
Dave is currently cooling the target. I've asked Tyler, TO for today day, to come at 1pm.
Everything seems on track. Hall sweeping shall occur around 3pm. Jessie will notify us when we can ramp up the magnets. We shall be able to resume today by swing shift. 

Requirements to resume are the following:
TGT-PROC-17-012, step 7.4.1 (raster size check) must be completed and authorization from Dave Meekins must be obtained before proceeding back to production running on gas targets.

In other words, we need to perform a ~50k events carbon hole spot check at 5uA, to check that beam is still centered, and that beam size is still a square 2x2 mm. *It will need to be approved by Dave Meekins before going forward*. So whenever you have it, call Dave. If it looks good and Dave approves it, go forward. 
If anything looks wrong (i.e. we don't see the hole or the raster doesn't look right), then we shall go back through our calibration steps.
After Dave has approved, Doug expressed the (strong) wish to start with a 30 min run Ti target at 22.5 uA  just to make sure everything is working correctly with a simple target, before moving on to production on gas.

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3610868
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