key4hep/k4geo
Oct 2024 – Feb 2026
6 Months active
Languages Used
C++CMakeXMLMarkdownPython
Technical Skills
C++CMakeDetector DesignDetector GeometryPhysics SimulationBuild System Configuration
Lorenzo Pezzotti
PROFILE
Lorenzo Pezzotti
Lorenzo Pezzotti developed advanced detector simulation and configuration features for the key4hep/k4geo repository, focusing on calorimeter integration, geometry consistency, and realistic physics modeling. He engineered dual-readout calorimeter modules and centralized detector configuration using C++ and XML, improving simulation fidelity and maintainability. Lorenzo implemented time-binned photon contribution storage for hadronic calorimeters, leveraging Geant4 and CLHEP to enhance data structure and analysis efficiency. His work included robust bug fixes, code refactoring, and automated testing, ensuring reliable downstream processing. Through careful documentation and code organization, Lorenzo enabled reproducible physics results and streamlined onboarding, demonstrating depth in both technical execution and domain understanding.
Overall Statistics
Feature vs Bugs
68%Features
Repository Contributions
50Total
Bugs
6
Commits
50
Features
13
Lines of code
6,801
Activity Months6
Your Network
24 peopleShared Repositories
24
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for key4hep/k4geo focused on delivering a configurable Hadronic Calorimeter Time-bin Photon Contributions Saving feature for IDEA_o2. Implemented storage of calohitcontributions (photons at SiPMs) within the hadronic calorimeter data path, with photons grouped into configurable time bins to control output size while preserving timing information. Time-bin width is user-configurable and safeguarded against non-physical values (<= 0 ns). Integrated CLHEP constants in the IDEA_o2 SDAction to ensure physical fidelity. The change is implemented via commit 2117bed5353a5f10170f965b9455205057e6e745 and updates to the IDEA_o2 calorimeter data flow to use the new time-bin based contributions. Overall, this enhances data output structure, reduces unnecessary storage, and improves downstream analysis efficiency and configurability.
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for key4hep/k4geo focused on delivering a configurable Hadronic Calorimeter Time-bin Photon Contributions Saving feature for IDEA_o2. Implemented storage of calohitcontributions (photons at SiPMs) within the hadronic calorimeter data path, with photons grouped into configurable time bins to control output size while preserving timing information. Time-bin width is user-configurable and safeguarded against non-physical values (<= 0 ns). Integrated CLHEP constants in the IDEA_o2 SDAction to ensure physical fidelity. The change is implemented via commit 2117bed5353a5f10170f965b9455205057e6e745 and updates to the IDEA_o2 calorimeter data flow to use the new time-bin based contributions. Overall, this enhances data output structure, reduces unnecessary storage, and improves downstream analysis efficiency and configurability.
February 2026
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025: Focused on delivering realistic detector response modeling and geometry consistency in the k4geo module to improve simulation fidelity, reproducibility, and alignment with the latest design. The work enhances physics signal representations and reduces configuration-induced discrepancies in calorimeter response.
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025: Focused on delivering realistic detector response modeling and geometry consistency in the k4geo module to improve simulation fidelity, reproducibility, and alignment with the latest design. The work enhances physics signal representations and reduces configuration-induced discrepancies in calorimeter response.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for key4hep/k4geo. Focused on delivering a precise bug fix for calorimeter region identification and stabilizing CI tests to improve downstream simulation accuracy and build reliability. Key outcomes include a fix to use volume copy number for barrel vs endcap identification (enabling correct downstream processing) and a CI improvement by disabling the IDEA_o2 v01 test to reduce flaky runs. These changes reduce risk in geometry processing and accelerate development cycles. Technologies involved include C++, build system adjustments (CMake/test configuration), and testing strategies.
2 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for key4hep/k4geo. Focused on delivering a precise bug fix for calorimeter region identification and stabilizing CI tests to improve downstream simulation accuracy and build reliability. Key outcomes include a fix to use volume copy number for barrel vs endcap identification (enabling correct downstream processing) and a CI improvement by disabling the IDEA_o2 v01 test to reduce flaky runs. These changes reduce risk in geometry processing and accelerate development cycles. Technologies involved include C++, build system adjustments (CMake/test configuration), and testing strategies.
January 2025
December 2024
19 Commits • 3 Features
Dec 1, 2024December 2024: The k4geo module focused on stabilizing detector geometry configuration, improving simulation fidelity, and enhancing maintainability. Delivered centralized detector configuration by moving dimension parameters into IDEA_o2 XML, with standardized naming (e.g., DDDRCaloTubes_o1_v01) and accompanying documentation updates. Fixed critical geometry and material inconsistencies to properly distinguish barrel vs endcap regions and ensure reliable simulation setup. Implemented barrel signal handling and optical/granularity enhancements for the dual-readout-tubes calorimeter, restoring optical properties and increasing granularity where beneficial. Completed code maintenance tasks including formatting, improved logs, and comprehensive README updates, preserving physics results while improving developer productivity. These changes support more accurate physics analyses, faster onboarding, and a clearer change-traceability trail.
December 2024
19 Commits • 3 Features
Dec 1, 2024December 2024: The k4geo module focused on stabilizing detector geometry configuration, improving simulation fidelity, and enhancing maintainability. Delivered centralized detector configuration by moving dimension parameters into IDEA_o2 XML, with standardized naming (e.g., DDDRCaloTubes_o1_v01) and accompanying documentation updates. Fixed critical geometry and material inconsistencies to properly distinguish barrel vs endcap regions and ensure reliable simulation setup. Implemented barrel signal handling and optical/granularity enhancements for the dual-readout-tubes calorimeter, restoring optical properties and increasing granularity where beneficial. Completed code maintenance tasks including formatting, improved logs, and comprehensive README updates, preserving physics results while improving developer productivity. These changes support more accurate physics analyses, faster onboarding, and a clearer change-traceability trail.
November 2024
24 Commits • 6 Features
Nov 1, 2024November 2024: Delivery and integration of new detector actions and geometry updates in k4geo, with emphasis on IDEA_o2 readiness, robust testing, and code quality improvements that enable more realistic simulations and faster validation workflows.
24 Commits • 6 Features
Nov 1, 2024November 2024: Delivery and integration of new detector actions and geometry updates in k4geo, with emphasis on IDEA_o2 readiness, robust testing, and code quality improvements that enable more realistic simulations and faster validation workflows.
November 2024
October 2024
2 Commits • 1 Features
Oct 1, 2024October 2024 monthly summary for key4hep/k4geo focused on delivering the Dual-Readout Calorimeter Integration and associated detector configuration work. The changes lay the groundwork for improved calorimetry accuracy and updated detector designs, aligning with the project roadmap and enabling downstream analysis and simulation.
October 2024
2 Commits • 1 Features
Oct 1, 2024October 2024 monthly summary for key4hep/k4geo focused on delivering the Dual-Readout Calorimeter Integration and associated detector configuration work. The changes lay the groundwork for improved calorimetry accuracy and updated detector designs, aligning with the project roadmap and enabling downstream analysis and simulation.
Activity
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Quality Metrics
Correctness93.0%
Maintainability92.4%
Architecture91.4%
Performance86.4%
AI Usage20.4%
Skills & Technologies
Programming Languages
C++CMakeMarkdownPythonXML
Technical Skills
Build System ConfigurationC++C++ DevelopmentC++ developmentC++ programmingCMakeCode CommentingCode FormattingCode GeneralizationCode OrganizationCode RefactoringConfigurationConfiguration ManagementDD4hepData Configuration
Repositories Contributed To
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