Run Planning Meeting Notes, November 25 - December 1, 2021

Tuesday November 29

1. Last 24h:
   • Production has been quite good.
2. Issues:
   • FDC HV alarm solved by Beni.
   • A FCAL channel lost communication (thank you Malte). Solved following instructions.
3. Plan:
   • run on carbon at 150nA´
   • Rotate the radiators and use both configurations
   1. • It was suggested to stop the beam ALWAYS before changing the radiator configuration (even with the same radiator). Between radiator change (0/90 <--> 35/145 ALWAYS ask MCC to set the dumplette)
4. Analysis update
5. EXTRA:
   • Stan Brodsky Seminar: The Onset of Color Transparency from Holographic Light-Front QCD - Tuesday, 2021.11.30, 3:30 PM https://hit.lbl.gov/

Monday November 29

1. Last 24h:
   • Production has been quite good.
2. Issues:
   • No major issues to report.
   • Sean has updated the calibrations after the target change.
3. Plan:
   • run on carbon at 150nA´
   • Rotate the radiators and use both configurations
   1. • It was suggested to stop the beam ALWAYS before changing the radiator configuration (even with the same radiator). Between radiator change (0/90 <--> 35/145 ALWAYS ask MCC to set the dumplette)
4. EXTRA (thank you Alexandre):
   • Stan Brodsky Seminar: The Onset of Color Transparency from Holographic Light-Front QCD - Tuesday, 2021.11.30, 3:30 PM https://hit.lbl.gov/

Sunday November 28

1. Last 24h:
   • Production has been quite good.
2. Issues:
   • No major issues to report.
   • The energy oscillations reported by Alexandre here and here were addressed by Jay this morning. I lack the enough knowledge to arrive at a conclusion, but it is apparent that it is not affecting the quality of the data.
3. Plan:
   • run on carbon at 150nA´
   • Rotate the radiators and use both configurations
   1. • It was suggested to stop the beam ALWAYS before changing the radiator configuration (even with the same radiator). Between radiator change (0/90 <--> 35/145 ALWAYS ask MCC to set the dumplette)

Saturday November 27

1. Last 24h:
   • Production has been quite good.
2. Issues:
   • No major issues to report.
3. Plan:
   • run on carbon at 150nA´
   • Rotate the radiators and use both configurations
   1. • It was suggested to stop the beam ALWAYS before changing the radiator configuration (even with the same radiator). Between radiator change (0/90 <--> 35/145 ALWAYS ask MCC to set the dumplette)

Friday November 26

1. Last 24h:
   • Production has been quite good.
2. Issues:
   • ~23:30 VESDA Fire Alarm panel started to beep, but not alarm was present. Sasha explained us how to proceed, and around one hour later it was solved.
3. Plan:
   • run on carbon at 150nA´
   • Rotate the radiators and use both configurations
   1. • It was suggested to stop the beam ALWAYS before changing the radiator configuration (even with the same radiator). Between radiator change (0/90 <--> 35/145 ALWAYS ask MCC to set the dumplette)
   • Take ONE amorphous run.

Thursday November 25

1. Last 24h:
   • Solenoid ramped down, cryotarget removed and replaced with the carbon foils (work finished ~12:00)
   • Beni started to ramp up the solenoid. ~19:00 tune beam was delivered into the hall. After harp scans and finishing with the solenoid ramp up, DAQ was prepared for production.
   • First Carbon run at 150nA started ~11:30
2. Issues:
   • DAQ computer was frozen during the afternoon, so a hot reboot was necessary. That could cause some communications issues with some racks, especially with the Pair Spectrometer.
   • Besides that issue, I suggest limiting the DAQ computer just for CODA. I had the experience that the computer gets freeze or lose the GUI when is used with other apps.
   • Not an experimental issue, but important, the mouse from the conference room has disappear.
3. Plan:
   • run on carbon at 150nA´
   • Rotate the radiators and use both configurations
   1. • It was suggested to stop the beam ALWAYS before changing the radiator configuration (even with the same radiator). Between radiator change (0/90 -> 35/145 ALWAYS ask MCC to set the dumplette)
   • Take at least two amorphous runs

1. Analysis update