AliRoot Core  ee782a0 (ee782a0)
TPC/CalibMacros/READMEcalib.txt File Reference

Typedefs

using below = ============================================================================Standard CPass0, CPass1=============================================================================xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibTime Input-reconstructed tracks and events OCDB output:TPC/Calib/TimeDrift array of graphs+in past used as one of input for the TPC/Calib/Corrections Details:Kalman fit:drift, drfit velocity gradient t0 shift+alignment output:part of TPC/CalibTimeDrift Histogramming:a.) TPC/ITS, TPC/Vertex, TPC/TOF, TPC/TRD residual histograms in 4 D-cretaion of distortion maps for run by run alignment OCDB output:part of TPC/CalibTimeDrift additional output:distortion map in meanITSVertex.root b.) TPCAside vertex, TPCCside vertex, Global vertex combination histogramming-implemented as a robust method-not used for extraction of calibration because of worse precission, and problems starting strting at high luminosity running.c.) TPCdrift laser histogramming-OCDB output:part of TPC/CalibTimeDrift-as laser is not 100%stable, calibration is not used in the reconstruction unless all other methods mentioned above failed xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibTimeGain:Input-reconstructed tracks and events OCDB output:TPC/Calib/TimeGain-array of graphs Details:the calibration of the time dependence of the TPC gain due to pressure and temperature changes etc.In addition signal attenuation calibration xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibGainMult:Input-reconstructed tracks and events OCDB output:TPC/Calib/TimeGain-array of graphs Details:gain/tail as function of multiplicity, gain per chamber+experimental code for the dEdx calibration presented one year ago(disabled)=============================================================================New in CPass0, CPass1=============================================================================xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibAlign-Input-reconstructed events/tracks Histograms:THnSparse-residuals at sector boundaries, THn-4D cluster/track residuals Status:code cleaning needed Output-in past used as one of input for the TPC/Calib/Corrections automatic procedure missing xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibLaser-Input-reconstructed events/tracks Actions:drift velocity fit
 

Typedef Documentation

using below = ============================================================================ Standard CPass0,CPass1 ============================================================================= xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibTime Input- reconstructed tracks and events OCDB output: TPC/Calib/TimeDrift array of graphs + in past used as one of input for the TPC/Calib/Corrections Details: Kalman fit: drift, drfit velocity gradient t0 shift+ alignment output: part of TPC/CalibTimeDrift Histogramming: a.) TPC/ITS, TPC/Vertex, TPC/TOF, TPC/TRD residual histograms in 4 D -cretaion of distortion maps for run by run alignment OCDB output: part of TPC/CalibTimeDrift additional output: distortion map in meanITSVertex.root b.) TPCAside vertex, TPCCside vertex, Global vertex combination histogramming -implemented as a robust method - not used for extraction of calibration because of worse precission, and problems starting strting at high luminosity running. c.) TPCdrift laser histogramming -OCDB output: part of TPC/CalibTimeDrift -as laser is not 100 % stable, calibration is not used in the reconstruction unless all other methods mentioned above failed xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibTimeGain: Input- reconstructed tracks and events OCDB output: TPC/Calib/TimeGain - array of graphs Details: the calibration of the time dependence of the TPC gain due to pressure and temperature changes etc. In addition signal attenuation calibration xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibGainMult: Input- reconstructed tracks and events OCDB output: TPC/Calib/TimeGain - array of graphs Details: gain/tail as function of multiplicity, gain per chamber + experimental code for the dEdx calibration presented one year ago (disabled) ============================================================================= New in CPass0,CPass1 ============================================================================= xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibAlign - Input - reconstructed events/tracks Histograms: THnSparse - residuals at sector boundaries, THn - 4D cluster/track residuals Status: code cleaning needed Output - in past used as one of input for the TPC/Calib/Corrections automatic procedure missing xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx AliTPCcalibLaser - Input - reconstructed events/tracks Actions: drift velocity fit

Definition at line 78 of file READMEcalib.txt.