​​Alpide Testbeam @ CERN SPS July

​​What to do before interventions:

  • ​​change currents
  • ​​all planes are plugged
  • ​​covered well
  • ​​take the pc →replug network
  • ​​FPGA progr here

​​Daily Todo/Meetings:

​​11 July:

  • ​​8am: the 0V VCASN scan is complete. The 3V VCASN scan has just started. However TOF asked to increase luminosity. 
  • ​​830am: beam is lost
  • ​​~ 840am: beam is back. Collimators are opened. 
  • ​​940am
  • ​​I start a 20k run with 3V (run282095710_230711095715.raw)

​​08 July:

  • ​​Existing datasets (and then migrate them to EOS):
  • ​​First alignment data with Vth>0.9 PMT, dt=100 → Events:
  • ​​Aligned dataset with Vth>0.9 PMT, dt=100 → test pile up in analysis → Events:
  • ​​Aligned dataset with Vth>0.3 PMT, dt=100 → too much pile up — not usable → Events:
  • ​​Aligned dataset with Vth>0.5 PMT 
  • ​​dt=400
  • ​​Events 16k
  • ​​dt=600  → Events O(100)
  • ​​dt=800 → Events
  • ​​Strobe-length? 
  • ​​Analysis: 
  • ​​which datasets are usable maybe tightening analysis cuts?
  • ​​what is the max number of tracks/event we can stand? 
  • ​​Define beam configurations:
  • ​​Check integration of
​​→ Paolo for the configuration:
  • ​​Check beam:

​​07 July

​​Plans for the Day:
  • ​​Data taking at PS
  • ​​50k at existing trigger threshold
  • ​​50k at new threshold(s)
  • ​​DUT Threshold scans at:
  • ​​0V
  • ​​1V
  • ​​2V
  • ​​3V (double check)
  • ​​Investigate: What is the time resolution of the scintillator? Of the PMT? 

​​06 July

​​Todo from Yesterday:
  • ​​[todo] update the instructions 
  • ​​[todo] update the Log
  • ​​[todo] copy the data to cernbox (removing the garbage runs?)
​​Plans for the Day:
  • ​​Discuss priorities