AliceO2Group/O2Physics
Sep 2025 – Feb 2026
4 Months active
Languages Used
C++CMake
Technical Skills
C++Data AnalysisDetector SimulationFramework DevelopmentHigh Energy Physics SoftwareParticle Physics
hfribert
PROFILE
Hfribert
Contributed to the AliceO2Group/O2Physics repository by developing and refining particle reconstruction, identification, and analysis features for high energy physics workflows. Built modular C++ components to extend Sigma particle and kink analysis, implemented Time-over-Threshold and combined detector PID logic, and enhanced momentum recalculation for kink and Sigma topologies using kinematic constraints. Improved data quality and analysis robustness through targeted refactoring, quality assurance, and bug fixes, including collision histogram initialization and PID evaluation logic. Leveraged CMake for build management and collaborated on feature delivery, enabling more accurate physics simulations and broader particle identification across ALICE3’s data processing and analysis pipelines.
Overall Statistics
Feature vs Bugs
86%Features
Repository Contributions
9Total
Bugs
1
Commits
9
Features
6
Lines of code
3,638
Activity Months4
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Work History
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 – AliceO2Group/O2Physics: Key feature delivered to enhance momentum reconstruction for kink/sigma topologies and bolster collision analysis. Key deliverable: Enhanced pT recalculation for Kinks/Sigmas using kinematic constraints, including a new function to recalculate transverse momentum for Kinks (Sigmas) and added derived-to-derived processing for kinks, significantly improving the accuracy of physics simulations and collision analyses. This work aligns with PWGCF objectives and strengthens the robustness of kink-related analyses across analyses and workflows. Major updates: - Implemented improved pT recalculation using kinematic constraints (new function). - Added derived-to-derived processing for kinks. Commit highlights: - 896aca5a2d2e3d66a6afbcf4497211040258f791 (PWGCF) – Feature: Recalculation of kink/sigma pT (#14998) – Co-authored-by Henrik Fribert. - 5b4d355be19c51668ecff20c3aebd8054eb19064 (PWGCF) – Feature: Derived-to-derived for kinks and pt recalc (#15063) – Co-authored-by Henrik Fribert. Impact: - Improves accuracy of particle physics simulations and collision analysis involving kink/Sigma topologies. - Strengthens O2Physics capabilities for downstream analyses and PWGCF workflows. Technologies/skills demonstrated: - Kinematic-constraint based pT recalculation, derived-to-derived processing, collaborative development, version control and documentation of feature work.
2 Commits • 1 Features
Feb 1, 2026February 2026 – AliceO2Group/O2Physics: Key feature delivered to enhance momentum reconstruction for kink/sigma topologies and bolster collision analysis. Key deliverable: Enhanced pT recalculation for Kinks/Sigmas using kinematic constraints, including a new function to recalculate transverse momentum for Kinks (Sigmas) and added derived-to-derived processing for kinks, significantly improving the accuracy of physics simulations and collision analyses. This work aligns with PWGCF objectives and strengthens the robustness of kink-related analyses across analyses and workflows. Major updates: - Implemented improved pT recalculation using kinematic constraints (new function). - Added derived-to-derived processing for kinks. Commit highlights: - 896aca5a2d2e3d66a6afbcf4497211040258f791 (PWGCF) – Feature: Recalculation of kink/sigma pT (#14998) – Co-authored-by Henrik Fribert. - 5b4d355be19c51668ecff20c3aebd8054eb19064 (PWGCF) – Feature: Derived-to-derived for kinks and pt recalc (#15063) – Co-authored-by Henrik Fribert. Impact: - Improves accuracy of particle physics simulations and collision analysis involving kink/Sigma topologies. - Strengthens O2Physics capabilities for downstream analyses and PWGCF workflows. Technologies/skills demonstrated: - Kinematic-constraint based pT recalculation, derived-to-derived processing, collaborative development, version control and documentation of feature work.
February 2026
November 2025
2 Commits • 1 Features
Nov 1, 2025Monthly work summary for 2025-11 focused on delivering Sigma Plus support and improving PID robustness in the O2Physics femto analysis workflow. The work enhances physics reach for hyperon analyses and improves data quality through targeted refactors.
November 2025
2 Commits • 1 Features
Nov 1, 2025Monthly work summary for 2025-11 focused on delivering Sigma Plus support and improving PID robustness in the O2Physics femto analysis workflow. The work enhances physics reach for hyperon analyses and improves data quality through targeted refactors.
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025 (AliceO2Group/O2Physics) focused on expanding particle identification capabilities and stabilizing QA data workflows. Key features delivered include extending ALICE3 PID to nuclei across Time-of-Flight (TOF) and Ring-Imaging Cherenkov (RICH) detectors, introducing a new combined PID task to evaluate performance across multiple detectors, enabling broader and more accurate particle identification for nuclear species (deuterons, tritons, helium-3, alphas). A major bug fix addressed collision histogram initialization in the kink QA task by removing an unused type definition and enforcing QA-specific binning configurations to ensure correct data collection and analysis.
2 Commits • 1 Features
Oct 1, 2025October 2025 (AliceO2Group/O2Physics) focused on expanding particle identification capabilities and stabilizing QA data workflows. Key features delivered include extending ALICE3 PID to nuclei across Time-of-Flight (TOF) and Ring-Imaging Cherenkov (RICH) detectors, introducing a new combined PID task to evaluate performance across multiple detectors, enabling broader and more accurate particle identification for nuclear species (deuterons, tritons, helium-3, alphas). A major bug fix addressed collision histogram initialization in the kink QA task by removing an unused type definition and enforcing QA-specific binning configurations to ensure correct data collection and analysis.
October 2025
September 2025
3 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for AliceO2Group/O2Physics: Delivered three major features advancing particle reconstruction, analytics, and PID capabilities; integrated new analysis builders into existing pipelines; and maintained high code quality with modular design and clear commit references. Business impact includes enabling new physics studies (Sigma particle reconstruction, Track-Kink analytics) and improved track-level PID with ToT, strengthening ALICE3 data processing and physics output.
September 2025
3 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for AliceO2Group/O2Physics: Delivered three major features advancing particle reconstruction, analytics, and PID capabilities; integrated new analysis builders into existing pipelines; and maintained high code quality with modular design and clear commit references. Business impact includes enabling new physics studies (Sigma particle reconstruction, Track-Kink analytics) and improved track-level PID with ToT, strengthening ALICE3 data processing and physics output.
Activity
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Quality Metrics
Correctness92.2%
Maintainability82.2%
Architecture87.8%
Performance77.8%
AI Usage26.6%
Skills & Technologies
Programming Languages
C++CMake
Technical Skills
C++C++ DevelopmentCMakeData AnalysisDetector SimulationFramework DevelopmentHigh Energy Physics SoftwareParticle PhysicsPhysics SimulationQuality AssuranceSoftware DevelopmentSoftware Engineeringdata analysishigh energy physicssoftware development
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