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TOF digitiser
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‎Detectors/Upgrades/ALICE3/IOTOF/CMakeLists.txt‎

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# or submit itself to any jurisdiction.
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add_subdirectory(base)
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add_subdirectory(simulation)
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add_subdirectory(simulation)
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add_subdirectory(DataFormatsIOTOF)

‎Detectors/Upgrades/ALICE3/IOTOF/DataFormatsIOTOF/CMakeLists.txt‎

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# Copyright 2019-2020 CERN and copyright holders of ALICE O2.
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# See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
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# All rights not expressly granted are reserved.
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#
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# This software is distributed under the terms of the GNU General Public
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# License v3 (GPL Version 3), copied verbatim in the file "COPYING".
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#
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# In applying this license CERN does not waive the privileges and immunities
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# granted to it by virtue of its status as an Intergovernmental Organization
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# or submit itself to any jurisdiction.
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o2_add_library(DataFormatsIOTOF
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SOURCES src/Digit.cxx
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# SOURCES src/MCLabel.cxx
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# SOURCES src/Cluster.cxx
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PUBLIC_LINK_LIBRARIES O2::DataFormatsITSMFT)
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o2_target_root_dictionary(DataFormatsIOTOF
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HEADERS include/DataFormatsIOTOF/Digit.h
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# HEADERS include/DataFormatsIOTOF/MCLabel.h
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# HEADERS include/DataFormatsIOTOF/Cluster.h
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)

‎Detectors/Upgrades/ALICE3/IOTOF/DataFormatsIOTOF/include/DataFormatsIOTOF/Digit.h‎

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
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// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
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// All rights not expressly granted are reserved.
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//
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// This software is distributed under the terms of the GNU General Public
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// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
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//
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// In applying this license CERN does not waive the privileges and immunities
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// granted to it by virtue of its status as an Intergovernmental Organization
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// or submit itself to any jurisdiction.
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///
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/// \file Digit.h
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/// \brief Definition of IOTOF digit class
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/// \author Nicolò Jacazio, Università del Piemonte Orientale (IT)
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/// \since 2026-03-17
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///
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#ifndef ALICEO2_IOTOF_DIGIT_H
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#define ALICEO2_IOTOF_DIGIT_H
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#include "DataFormatsITSMFT/Digit.h"
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namespace o2::iotof
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{
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class Digit : public o2::itsmft::Digit
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{
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public:
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Digit() = default;
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~Digit() = default;
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Digit(UShort_t chipindex = 0, UShort_t row = 0, UShort_t col = 0, Int_t charge = 0, double time = 0.)
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: o2::itsmft::Digit(chipindex, row, col, charge), mTime(time) {};
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// Setters
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void setTime(double time) { mTime = time; }
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// Getters
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double getTime() const { return mTime; }
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private:
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double mTime = 0.; ///< Measured time (ns)
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ClassDefNV(Digit, 1);
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};
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} // namespace o2::iotof
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#endif // ALICEO2_IOTOF_DIGIT_H

‎Detectors/Upgrades/ALICE3/IOTOF/DataFormatsIOTOF/src/DataFormatsIOTOFLinkDef.h‎

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
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// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
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// All rights not expressly granted are reserved.
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//
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// This software is distributed under the terms of the GNU General Public
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// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
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//
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// In applying this license CERN does not waive the privileges and immunities
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// granted to it by virtue of its status as an Intergovernmental Organization
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// or submit itself to any jurisdiction.
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#ifdef __CLING__
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#pragma link off all globals;
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#pragma link off all classes;
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#pragma link off all functions;
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#pragma link C++ class o2::iotof::Digit + ;
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// #pragma link C++ class std::vector < o2::iotof::Digit> + ;
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#endif

‎Detectors/Upgrades/ALICE3/IOTOF/DataFormatsIOTOF/src/Digit.cxx‎

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
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// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
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// All rights not expressly granted are reserved.
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//
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// This software is distributed under the terms of the GNU General Public
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// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
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//
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// In applying this license CERN does not waive the privileges and immunities
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// granted to it by virtue of its status as an Intergovernmental Organization
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// or submit itself to any jurisdiction.
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///
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/// \file Digit.cxx
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/// \brief Implementation of IOTOF digit class
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/// \author Nicolò Jacazio, Università del Piemonte Orientale (IT)
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/// \since 2026-03-17
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///
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#include "DataFormatsIOTOF/Digit.h"
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using namespace o2::iotof;

‎Detectors/Upgrades/ALICE3/IOTOF/simulation/CMakeLists.txt‎

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o2_add_library(IOTOFSimulation
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SOURCES src/Layer.cxx
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src/Detector.cxx
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src/Digitizer.cxx
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# src/IOTOFServices.cxx
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PUBLIC_LINK_LIBRARIES O2::IOTOFBase
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O2::DataFormatsIOTOF
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O2::ITSMFTSimulation)
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o2_target_root_dictionary(IOTOFSimulation
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HEADERS include/IOTOFSimulation/Detector.h
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include/IOTOFSimulation/Layer.h)
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include/IOTOFSimulation/Layer.h
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include/IOTOFSimulation/Digitizer.h)
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# include/IOTOFSimulation/IOTOFServices.h)

‎Detectors/Upgrades/ALICE3/IOTOF/simulation/include/IOTOFSimulation/Digitizer.h‎

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
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// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
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// All rights not expressly granted are reserved.
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//
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// This software is distributed under the terms of the GNU General Public
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// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
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//
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// In applying this license CERN does not waive the privileges and immunities
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// granted to it by virtue of its status as an Intergovernmental Organization
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// or submit itself to any jurisdiction.
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///
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/// \file Digitizer.h
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/// \brief Definition of the ALICE3 TOF digitizer
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/// \author Nicolò Jacazio, Università del Piemonte Orientale (IT)
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/// \since 2026-03-17
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///
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#ifndef ALICEO2_IOTOF_DIGITIZER_H
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#define ALICEO2_IOTOF_DIGITIZER_H
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#include "ITSMFTSimulation/Hit.h"
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#include "DataFormatsITSMFT/Digit.h"
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#include "DataFormatsIOTOF/Digit.h"
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#include "DataFormatsITSMFT/ROFRecord.h"
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#include "CommonDataFormat/InteractionRecord.h"
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#include "SimulationDataFormat/MCCompLabel.h"
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#include "SimulationDataFormat/MCTruthContainer.h"
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#include "IOTOFBase/GeometryTGeo.h"
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namespace o2::iotof
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{
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class Digitizer
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{
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public:
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void setDigits(std::vector<o2::iotof::Digit>* dig) { mDigits = dig; }
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void setMCLabels(o2::dataformats::MCTruthContainer<o2::MCCompLabel>* mclb) { mMCLabels = mclb; }
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void setROFRecords(std::vector<o2::itsmft::ROFRecord>* rec) { mROFRecords = rec; }
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void init();
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/// Steer conversion of hits to digits
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void process(const std::vector<o2::itsmft::Hit>* hits, int evID, int srcID);
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// provide the common iotof::GeometryTGeo to access matrices and segmentation
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void setGeometry(const o2::iotof::GeometryTGeo* gm) { mGeometry = gm; }
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private:
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void processHit(const o2::itsmft::Hit& hit, uint32_t& maxFr, int evID, int srcID);
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const o2::iotof::GeometryTGeo* mGeometry = nullptr; ///< IOTOF geometry
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// std::vector<o2::iotof::ChipDigitsContainer> mChips; ///< Array of chips digits containers
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std::vector<o2::iotof::Digit>* mDigits = nullptr; //! output digits
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std::vector<o2::itsmft::ROFRecord>* mROFRecords = nullptr; //! output ROF records
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o2::dataformats::MCTruthContainer<o2::MCCompLabel>* mMCLabels = nullptr; //! output labels
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};
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} // namespace o2::iotof
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#endif

‎Detectors/Upgrades/ALICE3/IOTOF/simulation/src/Digitizer.cxx‎

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
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// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
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// All rights not expressly granted are reserved.
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//
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// This software is distributed under the terms of the GNU General Public
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// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
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//
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// In applying this license CERN does not waive the privileges and immunities
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// granted to it by virtue of its status as an Intergovernmental Organization
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// or submit itself to any jurisdiction.
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///
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/// \file Digitizer.cxx
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/// \brief Implementation of the ALICE3 TOF digitizer
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/// \author Nicolò Jacazio, Università del Piemonte Orientale (IT)
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/// \since 2026-03-17
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///
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#include "IOTOFSimulation/Digitizer.h"
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#include "DetectorsRaw/HBFUtils.h"
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#include <TRandom.h>
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#include <vector>
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#include <iostream>
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#include <numeric>
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#include <fairlogger/Logger.h>
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namespace o2::iotof
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{
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void Digitizer::init()
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{
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}
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void Digitizer::process(const std::vector<o2::itsmft::Hit>* hits, int evID, int srcID)
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{
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}
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void Digitizer::processHit(const o2::itsmft::Hit& hit, uint32_t& maxFr, int evID, int srcID)
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{
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}
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} // namespace o2::iotof

‎Detectors/Upgrades/ALICE3/TRK/macros/test/CheckClusters.C‎

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// ── Chip response (for hit-segment propagation to charge-collection plane) ──
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// Fetches the same AlpideSimResponse from CCDB as the digitizer (IT3/Calib/APTSResponse)
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// and computes Y-intersection planes with the same formulas from Digitizer::init()
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auto& ccdbMgr = o2::ccdb::BasicCCDBManager::instance();
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ccdbMgr.setURL(ccdbUrl);
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if (ccdbTimestamp > 0) {
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ccdbMgr.setTimestamp(ccdbTimestamp);
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}
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auto* alpResp = ccdbMgr.get<o2::itsmft::AlpideSimResponse>("IT3/Calib/APTSResponse");
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if (!alpResp) {
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LOGP(fatal, "Cannot retrieve AlpideSimResponse from CCDB at {}", ccdbUrl);
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return;
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}
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const float depthMax = alpResp->getDepthMax();
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// auto& ccdbMgr = o2::ccdb::BasicCCDBManager::instance();
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// ccdbMgr.setURL(ccdbUrl);
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// if (ccdbTimestamp > 0) {
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// ccdbMgr.setTimestamp(ccdbTimestamp);
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// }
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// auto* alpResp = ccdbMgr.get<o2::itsmft::AlpideSimResponse>("IT3/Calib/APTSResponse");
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// if (!alpResp) {
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// LOGP(fatal, "Cannot retrieve AlpideSimResponse from CCDB at {}", ccdbUrl);
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// return;
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// }
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// const float depthMax = alpResp->getDepthMax();
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const float depthMax = 500;
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// ── Y-plane shifts: why VD and ML/OT need different values ────────────────
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//
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o2::dataformats::MCTruthContainer<o2::MCCompLabel>* clusLabArr = nullptr;
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std::vector<MC2ROF> mc2rofVec, *mc2rofVecP = &mc2rofVec;
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bool hasMC = (clusTree->GetBranch("TRKClusterMCTruth") != nullptr);
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// hasMC = false;
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if (hasMC) {
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clusTree->SetBranchAddress("TRKClusterMCTruth", &clusLabArr);
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clusTree->SetBranchAddress("TRKClustersMC2ROF", &mc2rofVecP);

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