Information for Shift Takers

Counting house: 5503, 6666 & 6000 | Run coordinator: 270-8916 | MCC: 7046 & 7047 & 7048 | Crew chief: 7045 | Guard house: 8522

Before the start of your shift: read and understand the Safety Documentation for this experiment.

• You must then sign in the Yellow Binder in the Hall C Counting House!

Fall 2017 Commissioning Plans

• Commissioning_Plan_2017
• RC daily meetings and daily runplan
• Experts on call

Your Responsibilities

Shift Leader

• Communicate clearly and effectively with shift crews and MCC (7047), and log any status information to the HCLOG

• Maintain and update the Shift Summary detailing the events which occur while on shift
  • This is done by starting the summary as a log entry titled "X Shift Summary" where X = Day, Swing, Owl
  • Save & edit the summary after ANY event of interest occurs
  • This provides the readers with an up-to-date play by play of the current shift
  • See example: https://logbooks.jlab.org/entry/3402742

• Keep track of beam time accounting

• Consult the daily run plans and communicate with Run Coordinator whenever problems happen that cannot be solved by shift workers.

• Maintain data taking quality and an efficient use of beam time.

• Follow the directives in the COO and associated Safety Documentation.

• Log the following in a shift summary in the Hall C Logbook:
  • run list (describing the goal of this run: eg production on LH2, BCM calibration...) and report main statistic numbers
  • any major events, including accesses

Target Operator

• Watch the target, see Target Info

• Assist the shift leader and third person with their duties

Third person

• Make certain that the Hall-C Alarm Handler process is running. See Hall_C_Alarm_Handler. Note: this is NOT the same as the detector HV system alarm.
  • If there are any alarms being ignored or silenced, find out why and enter this in the logbook.
  • Log any alarms when they occur.
• Start and stop the DAQ. Record the purpose for every single run in the "Run list" binders. Read fixme to create more blank forms.
• Online replay of all production runs (twice), as described in Analysis How-to. first replay the first 50 k events, check online plots (see next bullet), then run a full replay.
• Compare replay histograms with the sample ones and report to shift leader any unexplained differences. Hclog them.
• Fill shift checklist once per shift (for guidance, please see the checklist how-to).
  • A copy of the Current Checklist file, which includes help for filling it out, should be available here.