[Halla_running] [New Logentry] Status Update - Monday

kalyan at jlab.org kalyan at jlab.org
Mon Apr 20 09:45:01 EDT 2015


Logentry Text:
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MCC was unable to deliver CW beam to Hall A during this weekend due to beam optics issues. The beam size was too large (~1.5mm in x and y) and they were not able to do a good match. The tune beam was also lighting-up the target ion-chambers. However, the beam tuning was really good for Hall B last night. Since the work on Hall A tune was invasive to Hall B running, PD decided to stop trying Hall A tuning on the owl shift on Sunday. It seems like they need to (partly) redo their machine setup to work for three hall operations again - this will be done starting this morning. The Hall will remain closed and in beam permit. All shift crew should plan to come to the CH. 



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