[ALICE3] Add configuration indices to OnTheFly (#13856)

Author: jesgum

ALICE3/Core/FastTracker.cxx

@@ -442,11 +442,7 @@ int FastTracker::FastTrack(o2::track::TrackParCov inputTrack, o2::track::TrackPa
   inputTrack.getXYZGlo(posIni);
   const float initialRadius = std::hypot(posIni[0], posIni[1]);
   const float kTrackingMargin = 0.1;
-  const int kMaxNumberOfDetectors = 20;
-  if (kMaxNumberOfDetectors < layers.size()) {
-    LOG(fatal) << "Too many layers in FastTracker, increase kMaxNumberOfDetectors";
-    return -1; // too many layers
-  }
+
   int firstActiveLayer = -1; // first layer that is not inert
   for (size_t i = 0; i < layers.size(); ++i) {
     if (!layers[i].isInert()) {
@@ -461,8 +457,12 @@ int FastTracker::FastTrack(o2::track::TrackParCov inputTrack, o2::track::TrackPa
   const int xrhosteps = 100;
   const bool applyAngularCorrection = true;
 
+  // Delphes sets this to 20 instead of the number of layers,
+  // but does not count all points in the tpc as layers which we do here
+  // Loop over all the added layers to prevent crash when adding the tpc
+  // Should not affect efficiency calculation
   goodHitProbability.clear();
-  for (int i = 0; i < kMaxNumberOfDetectors; ++i) {
+  for (size_t i = 0; i < layers.size(); ++i) {
     goodHitProbability.push_back(-1.);
   }
   goodHitProbability[0] = 1.; // we use layer zero to accumulate
@@ -650,7 +650,7 @@ int FastTracker::FastTrack(o2::track::TrackParCov inputTrack, o2::track::TrackPa
 
   // generate efficiency
   float eff = 1.;
-  for (int i = 0; i < kMaxNumberOfDetectors; i++) {
+  for (size_t i = 0; i < layers.size(); i++) {
     float iGoodHit = goodHitProbability[i];
     if (iGoodHit <= 0)
       continue;

ALICE3/DataModel/OTFMulticharm.h

@@ -36,6 +36,7 @@ DECLARE_SOA_INDEX_COLUMN_FULL(XiCCPion, xiCCPion, int, Tracks, "_PiXiCC");
 
 DECLARE_SOA_COLUMN(XicMass, xicMass, float);
 DECLARE_SOA_COLUMN(XiccMass, xiccMass, float);
+DECLARE_SOA_COLUMN(LUTConfigId, lutConfigId, int); //! Index for LUT configuration
 
 // kine vars
 DECLARE_SOA_COLUMN(XiccPt, xiccPt, float);
@@ -155,7 +156,8 @@ DECLARE_SOA_TABLE(MCharmCores, "AOD", "MCharmCores",
                   otfmulticharm::XiccProperLength,
                   otfmulticharm::Pi1cPt,
                   otfmulticharm::Pi2cPt,
-                  otfmulticharm::PiccPt);
+                  otfmulticharm::PiccPt,
+                  otfmulticharm::LUTConfigId);
 
 DECLARE_SOA_TABLE(MCharmPID, "AOD", "MCharmPID",
                   otfmulticharm::Pi1cTofDeltaInner,

ALICE3/DataModel/OTFTracks.h

@@ -0,0 +1,35 @@
+// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
+// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
+// All rights not expressly granted are reserved.
+//
+// This software is distributed under the terms of the GNU General Public
+// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
+//
+// In applying this license CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+///
+/// \file   OTFTracks.h
+/// \author Jesper Karlsson Gumprecht
+/// \since  11/11/2025
+/// \brief  Table to map track to LUT configuration
+///
+
+#ifndef ALICE3_DATAMODEL_OTFTRACKS_H_
+#define ALICE3_DATAMODEL_OTFTRACKS_H_
+
+// O2 includes
+#include "Framework/AnalysisDataModel.h"
+
+namespace o2::aod
+{
+namespace otftracks
+{
+DECLARE_SOA_COLUMN(LUTConfigId, lutConfigId, int); //! Index for LUT configuration
+} // namespace otftracks
+
+DECLARE_SOA_TABLE(OTFLUTConfigId, "AOD", "OTFLUTConfigId", otftracks::LUTConfigId);
+} // namespace o2::aod
+
+#endif // ALICE3_DATAMODEL_OTFTRACKS_H_