AliceO2Group/O2Physics
Oct 2024 – Jan 2026
10 Months active
Languages Used
C++
Technical Skills
Data StructuresPhysics AnalysisC++ DevelopmentData AnalysisData ModelingParticle Physics
Bong-Hwi Lim
PROFILE
Bong-hwi Lim
Bonghwi Lim developed and modernized advanced resonance analysis frameworks in the AliceO2Group/O2Physics repository, focusing on high energy and particle physics workflows. Over ten months, he engineered features such as configurable event selection, PID-integrated data models, and multi-stream processing for Run-2 and Run-3 campaigns. Using C++ and the ROOT framework, he refactored core modules for maintainability, introduced new analysis tasks for neutron skin and resonance studies, and enhanced efficiency analysis with systematic QA controls. His work improved data fidelity, configurability, and reproducibility, demonstrating depth in software architecture, data modeling, and scientific computing for collaborative physics research environments.
Overall Statistics
Feature vs Bugs
83%Features
Repository Contributions
50Total
Bugs
4
Commits
50
Features
19
Lines of code
13,231
Activity Months10
Your Network
134 peopleShared Repositories
134
Work History
January 2026
2 Commits • 2 Features
Jan 1, 2026January 2026: Two major features delivered in AliceO2Group/O2Physics to enhance analysis tooling and physics studies, with a measurable impact on configurability, efficiency, and reproducibility. No major bugs fixed were recorded this month.
2 Commits • 2 Features
Jan 1, 2026January 2026: Two major features delivered in AliceO2Group/O2Physics to enhance analysis tooling and physics studies, with a measurable impact on configurability, efficiency, and reproducibility. No major bugs fixed were recorded this month.
January 2026
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Focused on expanding PWGLF resonance analyses in O2Physics to enable comprehensive resonance studies (Omega(2012), Xi(1820), Xi(1530)). Achievements include code enhancements, build integration, and workflow improvements that accelerate physics output, improve reproducibility, and enable broader collaboration across PWGLF analyses.
October 2025
2 Commits • 1 Features
Oct 1, 2025October 2025: Focused on expanding PWGLF resonance analyses in O2Physics to enable comprehensive resonance studies (Omega(2012), Xi(1820), Xi(1530)). Achievements include code enhancements, build integration, and workflow improvements that accelerate physics output, improve reproducibility, and enable broader collaboration across PWGLF analyses.
August 2025
1 Commits • 1 Features
Aug 1, 2025Monthly summary for 2025-08: Delivered targeted enhancements to the jFlucEfficiencyTask in the O2Physics repository to support a comprehensive efficiency study. The work focused on enabling high-pT track analysis and MC-focused event/track analysis, adding charge sign consistency checks and pT resolution measurements, and refactoring the task for maintainability. Implemented systematic study support through additional histograms, plus helper utilities for histogram filling and event selection, and PID-related processing to strengthen accuracy of efficiency evaluations.
1 Commits • 1 Features
Aug 1, 2025Monthly summary for 2025-08: Delivered targeted enhancements to the jFlucEfficiencyTask in the O2Physics repository to support a comprehensive efficiency study. The work focused on enabling high-pT track analysis and MC-focused event/track analysis, adding charge sign consistency checks and pT resolution measurements, and refactoring the task for maintainability. Implemented systematic study support through additional histograms, plus helper utilities for histogram filling and event selection, and PID-related processing to strengthen accuracy of efficiency evaluations.
August 2025
April 2025
3 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for AliceO2Group/O2Physics (PWGLF). Delivered a configurable RCT Flag Checker across PWGLF to enable refined event selection. The feature spans Chk892Flow event processing, extended track filtering integration, and Resonance Framework filtering by RCT flags, creating a coherent cross-module gating mechanism for physics analyses. This work enhances data quality and analyst productivity by allowing dynamic, flag-driven selection without manual code changes. Implementation is supported by three commits: 1e94f99eff501bd84863299c97220f5c92314099, d1dc0b0caa1a1fdee16067579cfc53c6821d5e6d, and 6a5648818c8e6935ee11594a4a59ff97e728e81e.
April 2025
3 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for AliceO2Group/O2Physics (PWGLF). Delivered a configurable RCT Flag Checker across PWGLF to enable refined event selection. The feature spans Chk892Flow event processing, extended track filtering integration, and Resonance Framework filtering by RCT flags, creating a coherent cross-module gating mechanism for physics analyses. This work enhances data quality and analyst productivity by allowing dynamic, flag-driven selection without manual code changes. Implementation is supported by three commits: 1e94f99eff501bd84863299c97220f5c92314099, d1dc0b0caa1a1fdee16067579cfc53c6821d5e6d, and 6a5648818c8e6935ee11594a4a59ff97e728e81e.
March 2025
18 Commits • 6 Features
Mar 1, 2025In March 2025, the O2Physics Resonance framework across AliceO2Group delivered a set of capability, data-model, and QA enhancements that strengthen end-to-end resonance analysis and Run-2 readiness. The work improves data handling, analysis fidelity, and performance while expanding data-model flexibility and multi-stream processing for Run-2 campaigns. A targeted bug fix ensures accurate event-plane resolution calculations within chk892Flow. Key business value: faster, more reliable resonance analyses; streamlined workflows for Run-2 data/MC processing; better memory footprint and data organization for derived datasets; and enhanced QA/diagnostics to support scientific decision-making.
18 Commits • 6 Features
Mar 1, 2025In March 2025, the O2Physics Resonance framework across AliceO2Group delivered a set of capability, data-model, and QA enhancements that strengthen end-to-end resonance analysis and Run-2 readiness. The work improves data handling, analysis fidelity, and performance while expanding data-model flexibility and multi-stream processing for Run-2 campaigns. A targeted bug fix ensures accurate event-plane resolution calculations within chk892Flow. Key business value: faster, more reliable resonance analyses; streamlined workflows for Run-2 data/MC processing; better memory footprint and data organization for derived datasets; and enhanced QA/diagnostics to support scientific decision-making.
March 2025
February 2025
11 Commits • 2 Features
Feb 1, 2025Concise monthly summary for 2025-02 covering AliceO2Group/O2Physics contributions. Key features delivered include PWGLF Flow analysis enhancements for K892PM and chk892Flow, with axis configurability (v2 axis), histogram axis filling, event selection filtering, QA plotting controls, and integration of the scalar product method, along with refactors to grouping configurations. Major bugs fixed include a hotfix for scalar product resolution in chk892Flow to ensure accurate SC results. A new task, jFlucEfficiencyTask, was introduced to compute particle efficiency for MC and real data across pT/eta histograms by charge and centrality, with crash fixes and stability improvements. Overall impact and accomplishments: improved analysis reliability, configurability, and QA capabilities; expanded physics reach with efficiency metrics; reduced risk of incorrect scalars and improved data quality controls. Technologies/skills demonstrated include C++/ROOT-based analysis, axis/configuration management, histogramming, QA tooling, refactoring for maintainability, and cross-functional task orchestration.
February 2025
11 Commits • 2 Features
Feb 1, 2025Concise monthly summary for 2025-02 covering AliceO2Group/O2Physics contributions. Key features delivered include PWGLF Flow analysis enhancements for K892PM and chk892Flow, with axis configurability (v2 axis), histogram axis filling, event selection filtering, QA plotting controls, and integration of the scalar product method, along with refactors to grouping configurations. Major bugs fixed include a hotfix for scalar product resolution in chk892Flow to ensure accurate SC results. A new task, jFlucEfficiencyTask, was introduced to compute particle efficiency for MC and real data across pT/eta histograms by charge and centrality, with crash fixes and stability improvements. Overall impact and accomplishments: improved analysis reliability, configurability, and QA capabilities; expanded physics reach with efficiency metrics; reduced risk of incorrect scalars and improved data quality controls. Technologies/skills demonstrated include C++/ROOT-based analysis, axis/configuration management, histogramming, QA tooling, refactoring for maintainability, and cross-functional task orchestration.
January 2025
5 Commits • 3 Features
Jan 1, 2025Concise monthly summary for 2025-01 focusing on business value and technical achievements across the AliceO2Group/O2Physics repository. The work centered on improving stability, configurability, and performance of core PWGLF flows, enabling more reliable resonance studies and Run 2/Run 3 data processing.
5 Commits • 3 Features
Jan 1, 2025Concise monthly summary for 2025-01 focusing on business value and technical achievements across the AliceO2Group/O2Physics repository. The work centered on improving stability, configurability, and performance of core PWGLF flows, enabling more reliable resonance studies and Run 2/Run 3 data processing.
January 2025
December 2024
5 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for AliceO2Group/O2Physics: Completed the resonance analysis framework modernization across initializer, data model, and processing pipeline. Implemented DF mixing resonance tables and LambdaMass, with a new table combination tutorial, and added PWGLF data products (spherocity, event plane) to broaden physics capabilities. Updated resonance-related modules and data handling, including Run2 collision selection refinements and module initialization improvements, to boost accuracy, reproducibility, and maintainability.
December 2024
5 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for AliceO2Group/O2Physics: Completed the resonance analysis framework modernization across initializer, data model, and processing pipeline. Implemented DF mixing resonance tables and LambdaMass, with a new table combination tutorial, and added PWGLF data products (spherocity, event plane) to broaden physics capabilities. Updated resonance-related modules and data handling, including Run2 collision selection refinements and module initialization improvements, to boost accuracy, reproducibility, and maintainability.
November 2024
2 Commits • 1 Features
Nov 1, 20242024-11 monthly summary for AliceO2Group/O2Physics: Resonance analysis enhancements and PID data integrity improvements. Delivered a feature to extend resonance analysis tables with PID information for daughter tracks by adding TPC and TOF PID columns for pion/kaon/proton in V0 and cascade decays, enabling more detailed particle property analyses. Fixed a critical bug in PID handling by correcting the association of daughter track PID information (TPC/TOF) across positive, negative, and bachelor daughters and updating variable names for clarity in the resonance analysis data structures. Impact: increases accuracy of resonance measurements, reduces the risk of PID misassignment, and strengthens reliability for downstream physics analyses and validations. Technologies/skills demonstrated include PID (TPC/TOF), resonance analysis data structures, V0/cascade decay handling, and commit-driven code quality.
2 Commits • 1 Features
Nov 1, 20242024-11 monthly summary for AliceO2Group/O2Physics: Resonance analysis enhancements and PID data integrity improvements. Delivered a feature to extend resonance analysis tables with PID information for daughter tracks by adding TPC and TOF PID columns for pion/kaon/proton in V0 and cascade decays, enabling more detailed particle property analyses. Fixed a critical bug in PID handling by correcting the association of daughter track PID information (TPC/TOF) across positive, negative, and bachelor daughters and updating variable names for clarity in the resonance analysis data structures. Impact: increases accuracy of resonance measurements, reduces the risk of PID misassignment, and strengthens reliability for downstream physics analyses and validations. Technologies/skills demonstrated include PID (TPC/TOF), resonance analysis data structures, V0/cascade decay handling, and commit-driven code quality.
November 2024
October 2024
1 Commits • 1 Features
Oct 1, 20242024-10 Monthly Summary for AliceO2Group/O2Physics focusing on feature delivery and impact. Delivered Resonance Collision Data Enrichment to enhance resonance collision analysis by embedding track occupancy information in time ranges. This involved extending the data model and initialization flow to pass occupancy data into resoCollisions, enabling more detailed physics studies and higher-fidelity analytics.
October 2024
1 Commits • 1 Features
Oct 1, 20242024-10 Monthly Summary for AliceO2Group/O2Physics focusing on feature delivery and impact. Delivered Resonance Collision Data Enrichment to enhance resonance collision analysis by embedding track occupancy information in time ranges. This involved extending the data model and initialization flow to pass occupancy data into resoCollisions, enabling more detailed physics studies and higher-fidelity analytics.
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Quality Metrics
Correctness85.6%
Maintainability84.6%
Architecture83.8%
Performance71.2%
AI Usage20.4%
Skills & Technologies
Programming Languages
C++
Technical Skills
Algorithm DesignBug FixingC++C++ DevelopmentCMakeCode ReadabilityCode RefactoringConfiguration ManagementData AnalysisData ModelingData ProcessingData StructuresEvent SelectionFramework DevelopmentHigh Energy Physics
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