[PWGJE,EMCAL-567] Add temperature calib. to EMC corr. task

- EMCal temperature calibration procedure is implemented in O2 and now used in the emcal correction task
- The temperature is assumed to be stable over the run and the temperature parameters are evaluated once at the initialization.

Author: jokonig

PWGJE/TableProducer/CMakeLists.txt

@@ -93,7 +93,7 @@ endif()
 
 o2physics_add_dpl_workflow(emcal-correction-task
                     SOURCES emcalCorrectionTask.cxx
-                    PUBLIC_LINK_LIBRARIES O2::Framework O2Physics::AnalysisCore O2::DetectorsBase O2::EMCALBase O2::EMCALReconstruction
+                    PUBLIC_LINK_LIBRARIES O2::Framework O2Physics::AnalysisCore O2::DetectorsBase O2::EMCALBase O2::EMCALReconstruction O2::EMCALCalibration
                     COMPONENT_NAME Analysis)
 
 o2physics_add_dpl_workflow(emcal-matchedtracks-writer

PWGJE/TableProducer/emcalCorrectionTask.cxx

@@ -35,6 +35,7 @@
 #include "EMCALBase/ClusterFactory.h"
 #include "EMCALBase/Geometry.h"
 #include "EMCALBase/NonlinearityHandler.h"
+#include "EMCALCalibration/EMCALTempCalibExtractor.h"
 #include "EMCALReconstruction/Clusterizer.h"
 #include "Framework/ASoA.h"
 #include "Framework/AnalysisDataModel.h"
@@ -113,6 +114,9 @@ struct EmcalCorrectionTask {
   Configurable<float> trackMinPt{"trackMinPt", 0.3, "Minimum pT for tracks to perform track matching, to reduce computing time. Tracks below a certain pT will be loopers anyway."};
   Configurable<bool> fillQA{"fillQA", false, "Switch to turn on QA histograms."};
   Configurable<bool> useCCDBAlignment{"useCCDBAlignment", false, "EXPERTS ONLY! Switch to use the alignment object stored in CCDB instead of using the default alignment from the global geometry object."};
+  Configurable<bool> applyTempCalib{"applyTempCalib", false, "Switch to turn on Temperature calibration."};
+  Configurable<std::string> pathTempCalibCCDB{"pathTempCalibCCDB", "Users/j/jokonig/EMCalTempCalibParams", "Path in the ccdb where slope and intercept for each cell are stored"}; // change to official path as soon as it is available
+  Configurable<bool> useTempCalibMean{"useTempCalibMean", false, "Switch to turn on Temperature mean calculation instead of median."};
 
   // Require EMCAL cells (CALO type 1)
   Filter emccellfilter = aod::calo::caloType == selectedCellType;
@@ -142,6 +146,10 @@ struct EmcalCorrectionTask {
   // EMCal geometry
   o2::emcal::Geometry* geometry;
 
+  // EMCal cell temperature calibrator
+  std::unique_ptr<o2::emcal::EMCALTempCalibExtractor> mTempCalibExtractor;
+  bool mIsTempCalibInitialized = false;
+
   std::vector<std::pair<int, int>> mExtraTimeShiftRunRanges;
 
   // Current run number
@@ -171,6 +179,10 @@ struct EmcalCorrectionTask {
       geometry->SetMisalMatrixFromCcdb();
     }
 
+    if (applyTempCalib) {
+      mTempCalibExtractor = std::make_unique<o2::emcal::EMCALTempCalibExtractor>();
+    }
+
     // read all the cluster definitions specified in the options
     if (clusterDefinitions->length()) {
       std::stringstream parser(clusterDefinitions.value);
@@ -316,6 +328,11 @@ struct EmcalCorrectionTask {
       // get run number
       runNumber = bc.runNumber();
 
+      if (applyTempCalib && !mIsTempCalibInitialized) { // needs to be called once
+        mTempCalibExtractor->InitializeFromCCDB(pathTempCalibCCDB, static_cast<uint64_t>(runNumber));
+        mIsTempCalibInitialized = true;
+      }
+
       // Convert aod::Calo to o2::emcal::Cell which can be used with the clusterizer.
       // In particular, we need to filter only EMCAL cells.
 
@@ -343,6 +360,9 @@ struct EmcalCorrectionTask {
         if (applyCellAbsScale) {
           amplitude *= getAbsCellScale(cell.cellNumber());
         }
+        if (applyTempCalib) {
+          amplitude *= mTempCalibExtractor->getGainCalibFactor(static_cast<unsigned short>(cell.cellNumber()));
+        }
         cellsBC.emplace_back(cell.cellNumber(),
                              amplitude,
                              cell.time() + getCellTimeShift(cell.cellNumber(), amplitude, o2::emcal::intToChannelType(cell.cellType()), runNumber),