Possibility to select shorter ITS tracks for special output of trackMCStudy

Author: shahor02

Detectors/GlobalTrackingWorkflow/study/include/GlobalTrackingStudy/TrackMCStudyConfig.h

@@ -34,6 +34,7 @@ struct TrackMCStudyConfig : o2::conf::ConfigurableParamHelper<TrackMCStudyConfig
   int nTBPerOccBin = 48;  // number of TB per occ bin
   float rejectClustersResStat = 0.1;
   float maxTPCRefExtrap = 2;                   // max dX to extrapolate the track ref when extrapolating track true posions
+  int minITSClForITSoutput = 7;                // create special ITS otput only for long enough tracks
   int decayPDG[5] = {310, 3122, 411, 421, -1}; // decays to study, must end by -1
   O2ParamDef(TrackMCStudyConfig, "trmcconf");
 };

Detectors/GlobalTrackingWorkflow/study/src/TrackMCStudy.cxx

@@ -1303,6 +1303,7 @@ void TrackMCStudy::processITSTracks(const o2::globaltracking::RecoContainer& rec
   const auto itsClRefs = recoData.getITSTracksClusterRefs();
   const auto clusITS = recoData.getITSClusters();
   const auto patterns = recoData.getITSClustersPatterns();
+  const auto& params = o2::trackstudy::TrackMCStudyConfig::Instance();
   auto pattIt = patterns.begin();
   mITSClustersArray.clear();
   mITSClustersArray.reserve(clusITS.size());
@@ -1324,7 +1325,7 @@ void TrackMCStudy::processITSTracks(const o2::globaltracking::RecoContainer& rec
     const auto& itsLb = itsLbls[itr];
     //    LOGP(info,"proc {} {} {}",itr0, itr, itsLb.asString());
     int nCl = itsTr.getNClusters();
-    if (itsLb.isFake() || nCl != 7) {
+    if (itsLb.isFake() || nCl < params.minITSClForITSoutput) {
       continue;
     }
     auto entrySel = mSelMCTracks.find(itsLb);