[Hallc_running] [Revised Logentry] RC daily update

simona at jlab.org simona at jlab.org
Tue Feb 4 16:00:03 EST 2020

Logentry Text:
The Hall C spin dance of yesterday went quite well: https://logbooks.jlab.org/entry/3776854

We restored production running after the Hall C spin dance around 5:30 pm: https://logbooks.jlab.org/entry/3776936

We ran more or less O.K. for ~5 hours before (what I would call) an impromptu beam study started on the Ops side towards the end of the swing shift with the purpose of investigating beam losses: https://logbooks.jlab.org/entry/3777279 , https://logbooks.jlab.org/entry/3777203, https://logbooks.jlab.org/entry/3777480 , https://logbooks.jlab.org/entry/3777557

Beam of less than 30 muA current was restored to Hall C sometime around 2:30 am (it was decided to give Hall A full current and run Hall C at less than 30 muA to keep the BLA from tripping the beam). Two and half hours later the 5th pass separator tripped and we were down until 8:30 am when we decided to take the controlled access for Steve, Andy and Amy to work on SHMS Q3. That work was completed in a little over three hours: https://logbooks.jlab.org/entry/3777427

After the access we restored production running around 12:20 pm but then we lost beam again at about 14:30 pm because of a series of accelerator downs: https://accweb.acc.jlab.org/dtm/open-events

For a summary of the little bit of production data we've gotten during these hellish 24 hours see: https://logbooks.jlab.org/entry/3776972

We will have a RC meeting today at 4:15 pm. Here is how to connect:

 To join via Room System:
 Video Conferencing System: bjn.vc -or-
 Meeting ID : 861439920
 To join via phone :
 1)  Dial:
   +1.408.740.7256 (US (San Jose))
   +1.888.240.2560 (US Toll Free))
   +1.408.317.9253 (US (Primary, San Jose))
   (see all numbers - http://bluejeans.com/numbers)
 2)  Enter Conference ID : 861439920


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/3777562
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