Calibration status

Speaker : G. Van Buren


Talk time : 12:40, Duration : 00:15

Fig. 1. AuAu drift velocities vs. date
  1.  AuAu200
    • Increasing probability that we will acquire more AuAu200 data at the end of June
      • Implies that some done items will need to resume
      • Implies we will likely supplement the large calibration production with more files at the end of June
        • Would then be ready for physics production mid-July
    • TPC
      • Drift Velocities in good shape (see Fig. 1) [done/to-resume]
      • SpaceCharge & GridLeak looks as good as for Run 14 AuAu200 (discussion here) [done]
      • dE/dx needs a large calibration production [to-do]
      • Hit errors [to-do]
    • HFT
      • Status/masking tables calibrated during the Run [done/to-resume]
      • Alignment
        • Internal completed using zero-field cosmic rays [done]
          • Final check will use zero-field cosmics to be taken after Run 16 ends [to-do]
        • Global HFT-TPC in progress using field-on cosmic rays [in progress]
          • Final check will require a calibration production of all Run 16 field-on cosmic rays, near the end of Run 16 [to-do]
    • TOF
      • VPD (start-side)
        • Performed during the Run (required for trigger's vertex cut) [done]
        • May be re-checked using the upcoming large calibration production [to-do]
      • BTOF (stop-side)
        • Calibration production (overlapping with dE/dx) required for alignment check and timing calibrations [to-do]
    • MTD
      • Calibration checks will use the same upcoming calibration productions: large calibration production and field-on cosmic rays production [to-do]
        • If insufficient statistics in the large calibration production, will request additional st_mtd calibration production [uncertain]
    • BeamLine
      • (for UPC) will use the large calibration production too [to-do]
  2. dAu200
    • TPC
      • Drift velocities: some need re-done [in-progress]
      • SpaceCharge & GridLeak
        • Initial calibration unable to figure out calibration procedure problems before end of data acquisition [aborted]
        • Final calibration beginning [in-progress]
      • dE/dx [to-do]
      • Hit errors [to-do]
    • HFT
      • Status/masking tables during the Run [done]
      • Alignment will not need re-done
    • TOF
      • VPD calibration during the Run [done]
      • BTOF should be able to use same calibration as AuAu200
    • MTD
      • Should be able to use same calibration as AuAu200
    • BeamLine [to-do]
  3. dAu62
    • Similar to dAu200
    • TPC SpaceCharge & GridLeak:
      • Initial calibration struggled for same reason as in dAu200 [aborted]
      • Final calibration neded [to-do]
  4. dAu20
    • TPC SpaceCharge & GridLeak:
      • Initial calibration unable to figure out issues [aborted]
      • Final calibration will be needed (small but visible distortion of a few mm in Offline QA) [to-do]
    • HFT not run
    • Otherwise like dAu 200 [to-do]
  5. dAu39
    • TPC SpaceCharge & GridLeak:
      • Initial calibration being attemped again [to-do]
      • Final calibration will be needed if it was needed for dAu20 [to-do]
    • HFT not running
    • Otherwise like dAu200 [to-do]


-Gene