[Hallc_running] [New Logentry] RC Daily Update

jones at jlab.org jones at jlab.org
Mon Oct 1 09:45:01 EDT 2018

Logentry Text:
The accelerator did not get beam back until around 5pm Sunday. Most of the work was getting good 
transmission in the injector. 

Finished the elastic singles at around 6pm

While switching to ep coincidence (SHMS change polarity) took optics data in the HMS ( Run 4826).

Start coincidence ep data taking. Had missing reference time errors in replay.
Brad came in to investigate. It seems that "a slightly loose lemo end on the hEL-real delay loop feeding the T5 coin. input."
cause the problem.  See https://logbooks.jlab.org/entry/3601696 for details.

This highlights the importance of monitoring the replay for report of missing reference times.

In late swing and early owl, accelerator fixed problems with 5 pass separator and other work.

As of now (9:40) the dummy Al for the ep coincidence is being run. Took about 25K coincidence ep elastics.

Next is starting physics!!!

Presently the accelerator is sending about 50uA and will be slowly inching the current up to get to 65uA.

We will meet this afternoon at 4:30pm in the second floor counting house: 


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/3601939
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