Run Meeting: Nov 6th, 2018

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3:30PM Run Meeting, Counting house meeting room (200C)

RC: Sanghwa Park

Summary of past 24h:

Tritium data taking after beam came back around 2 pm. Short escorted access during the swing shift to reset LQ1 power supply (communication error). Continued data taking without any major issue after that.

System recovery started from 8:30 am. Took controlled access full time during the period. Back to beam permit around 2:15.


Accelerator

System recovery started around 8:30 am and ends around 1:30 (restoration delay due to an ion pump and FSD card faults)
Otherwise up and delivering ~22 uA to Hall A.

Swing

Shift crew round that Left Q1 current and momentum read back not available in Hall A General Tools. The magnet was still up - verified by strip tool and online analysis. Jack wend down to cycle it with escorted access. Everything back to normal condition.

Owl shift

Mostly smooth running with some interruptions (20min, twice)

Day shift

Scheduled system recovery work started at 8:30.
Controlled access. Work done in the hall:
* Aerogel work (unstable gain of one A2 PMT channel; A2-3R. Swapped with the one at the edge of the acceptance (A2-3R <-> A2-0R)
* LQ3 power supply (https://logbooks.jlab.org/entry/3622009)
* Vaccum pump and other equipment check by tech group.
* Walkthrough training


NOTE:

Pay attention to energy shift and energy lock/FB system (they should be ON) and raster.
Check the truck ramp door indicator (orange cone in the camera screen) from time to time

Plan:

Continue data taking with Tritium. No kinematics change expected until Friday.

Slides/Links

MCC scheduling Whiteboard: http://accboard.acc.jlab.org/

Tritium elog: https://hallaweb.jlab.org/dvcslog/H3/

Tritium wiki page: https://wiki.jlab.org/tegwiki/index.php/Main_Page

Bluejeans connection information

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