Revision as of 12:32, 8 January 2018

Steps in Calibration

macros are located at /group/halld/Users/dalton/BCAL/monitoring/macros/

1. Remove 4ns ADC hardware offset (pass 1)
   1. Run reconstruction with BCAL_TDC_Timing plugin to produce the BCAL_TDC_Offsets/Deltat_raw/ histogram
   2. Run analysis script over output
      • script for single run is macros/extract_ADC_Dt_Zcorr.C
      • macros/monitor.py --adc4ns can be used to run over all runs
   3. Load constants to CCDB table /BCAL/ADC_timing_offsets using python macros/commit_CCDB.py -d output/ADCendDt/correction/ --adc
2. Remove 32ns TDC hardware offset (pass 1)
   1. Set CCDB table /BCAL/TDC_offsets to 0
   2. Run reconstruction with BCAL_online plugin to produce the /bcal/bcal_Uhit_tdiff_raw_ave histogram (pass 1)
   3. Run analysis script over output
      • script for single run is macros/extract_Uhit_tdiff.C
      • macros/monitor.py can be used to run over all runs
   4. Load constants to CCDB table /BCAL/TDC_offsets using python macros/commit_CCDB.py -d output/tdiff/TDCcorrection/runs/ --tdc -v
3. TDC timewalk correction (pass 2)
   1. Prerequisites:
      1. Remove 4ns ADC hardware offset
      2. Remove 32ns ADC hardware offset
   2. Run reconstruction with BCAL_TDC_Timing plugin
   3. Run analysis script over output
      • script for single run is macros/fit_TDCtimewalk.C
      • macros/monitor.py --timewalk can be used to run over all runs
   4. Load constants to CCDB
4. Position from end time-difference (pass 2)
   1. Prerequisites:
      1. Remove 4ns ADC hardware offset
   2. Run reconstruction with BCAL_TDC_Timing plugin
   3. Run analysis script over output
      • script for single run is macros/
      • ./macros/monitor.py --position can be used to run over all runs
   4. Load constants to CCDB
5. Calibrate the point time offset from tracking (pass 2)
   1. Prerequisites:
      1. Remove 4ns ADC hardware offset
   2. Run reconstruction with BCAL_TDC_Timing plugin
   3. Run analysis script over output
      1. Linear fit (needs ~1M events per run)
         • script for single run is macros/fit_ZvsDeltaT_p1.C
         • macros/monitor.py can be used to run over all runs
      2. Quadratic fit (needs 5 files per run)
   4. Load constants to CCDB
6. Attenuation length and gain ratio (pass 3)
   1. Prerequisites:
      1. position calibration (pass 2)
   2. Run reconstruction with BCAL_attenlength_gainratio plugin
   3. Run analysis script over output
   4. Load constants to CCDB