• About 8:00 Beam was off to tune the Hall C orbit to reach higher current.
• Right before noon, beam was restored, but the Compton HV started to trip with beam trips.
• Around 12:30 the Compton HV began to trip continuously.
• 13:30 Beam is taken away for Compton tuning. Shortly thereafter, it is decided that the injector needs serious tuning before the Compton work can begin.
• Beam briefly returned around 18:30, but the current was limited to 50 uA and work resumed to fix the problems with the beam.
• 21:15 Beam was returned to the halls and production data taking continued at 100 uA, but the Compton rates were extremely high.
• Megan worked with MCC on the Compton rates into the beginning of Owl shift.

• Continue production data taking at 100 uA.
• Compton rates still high, but the tune cannot be improved over night.
  Edet and photon detector were moved out of the beam for safety and HV's turned off.
• During owl shift the lumi widths were a bit wider at 1300-1400 ppm.
  In day shift, they returned to ~ 1100 ppm.
• 09:05-09:25 Beam away to investigate Hall B optics. Harp scans indicate their beam has a shoulder.
• 10:50 MCC takes beam away to improve beam delivery in Hall B, which eventually leads to more injector work.
• Near the end of day shift, the injector was restored to a previous time (Sept. 15) when things were running smoother with adjustments
  for the current running conditions.
• Around 17:45, beam was restored to the hall. However the Compton rates were still unreasonably large.
• HAPPEx production resumed at 18:15, while the problematic Compton rates were contemplated.
• 21:10 Dustin began low current calibration studies involving HRS Q² measurements, aluminum dummy measurements and HRS optics checks.
• MCC noticed by inserting the 1C12 OTR that the Hall A beam was not round and had a tail.
  A +4 degree change in the A laser phase helped with the tail, but this did not appear to improve the Compton rates.
• Afterwards the low current tests are completed, Alexandre will work with MCC to invesitgate the Compton rates.
  

Coulombs So Far

• We are currently on slug#20 (IHWP IN)
• Coulombs taken in this time period (since Thursday 11:30am) : 3.2 C
• Coulombs taken in all so far: 114.2 C as of Friday 9:00am.
• The accumulated charge was adjusted to account for a pedestal correction on bcm2.
• This resulted in a charge reduction of 10% for slug 19 and what has been taken for 20 so far.

Concerns

• Please always check online hists and compare them to the reference ones.
• If you find something strange or wrong, please HALOG it so that the expert can check it.
• Target Operator, please always check target PID system and strip plots to make sure all the systems work.
  The cryo flow rate around 25.2g/s and JT value is around 55.5 since this is better for Lumi widths.
  The flow rate and JT value setting are sensitive to the outside temperature. Hence the settings may change from morning to evening.
  Please be patient when you adjust the JT value since it may take a few minutes to make the cryo flow rate stable.