AliceO2Group/O2Physics
Oct 2024 – Mar 2026
12 Months active
Languages Used
C++None
Technical Skills
C++Physics AnalysisSoftware DevelopmentData AnalysisData ModelingDatabase Schema Management
rolavick
PROFILE
Rolavick
Over the past year, contributed to AliceO2Group/O2Physics by developing and refining advanced data analysis and event reconstruction tools for high energy and particle physics workflows. Leveraging C++ and CMake, implemented modular table producers, enhanced tau event selection, and integrated Monte Carlo truth data to improve analysis fidelity and reproducibility. Focused on robust data modeling, memory management, and configuration management, the work included expanding histogramming capabilities, refining particle identification, and introducing flexible event filtering. Regularly addressed infrastructure and governance needs, updating code ownership and test frameworks to streamline collaboration. These efforts strengthened analysis pipelines and supported scalable, maintainable physics research.
Overall Statistics
Feature vs Bugs
92%Features
Repository Contributions
36Total
Bugs
2
Commits
36
Features
23
Lines of code
10,548
Activity Months12
Your Network
478 peopleSame Organization
@cern.ch336
Shared Repositories
142
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Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026Month: 2026-03 Key achievements and deliverables: - Track Events Data Model Enhancement in AliceO2Group/O2Physics: Changed the Bc column datatype from int to uint64_t to support larger values, enabling more accurate analytics for track events. Commit: 66e2ecf2194acd8dd9642cc2071ada7b28896110. - Bug fix: Fixed the two tracks table tree issue (#15257), improving data integrity and stability of the track-event data structures. Overall impact and accomplishments: - Enhanced data model robustness and scalability for large-scale track-event datasets, reducing overflow risk and improving downstream analytics and reporting. - Strengthened collaboration and traceability through a focused commit (and co-authored-by attribution). Technologies/skills demonstrated: - C++ data model design and type safety (uint64_t), memory-efficient data handling, and robust API design. - Git-based collaboration, code review discipline, and precise change tracking. This work positions the project for expanded analytics capabilities and smoother processing of larger track-event datasets in future releases.
1 Commits • 1 Features
Mar 1, 2026Month: 2026-03 Key achievements and deliverables: - Track Events Data Model Enhancement in AliceO2Group/O2Physics: Changed the Bc column datatype from int to uint64_t to support larger values, enabling more accurate analytics for track events. Commit: 66e2ecf2194acd8dd9642cc2071ada7b28896110. - Bug fix: Fixed the two tracks table tree issue (#15257), improving data integrity and stability of the track-event data structures. Overall impact and accomplishments: - Enhanced data model robustness and scalability for large-scale track-event datasets, reducing overflow risk and improving downstream analytics and reporting. - Strengthened collaboration and traceability through a focused commit (and co-authored-by attribution). Technologies/skills demonstrated: - C++ data model design and type safety (uint64_t), memory-efficient data handling, and robust API design. - Git-based collaboration, code review discipline, and precise change tracking. This work positions the project for expanded analytics capabilities and smoother processing of larger track-event datasets in future releases.
March 2026
February 2026
2 Commits • 2 Features
Feb 1, 2026February 2026: focus on delivering advanced event analysis capabilities in O2Physics and expanding UPC candidate production with MFT support. Implementations improved event filtering, analysis fidelity, and maintainability, directly supporting ALICE physics goals and broader data-driven insights.
February 2026
2 Commits • 2 Features
Feb 1, 2026February 2026: focus on delivering advanced event analysis capabilities in O2Physics and expanding UPC candidate production with MFT support. Implementations improved event filtering, analysis fidelity, and maintainability, directly supporting ALICE physics goals and broader data-driven insights.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 (Month: 2025-10) – Governance-focused contributions in AliceO2Group/O2Physics. Delivered a targeted feature: Code Ownership Update for PWGUD, aligning CODEOWNERS with the new PWGUD team assignments and including Tutorials/PWGUD directories to ensure proper code reviews and accountability. Implemented via infrastructure change [Infrastructure] Update CODEOWNERS (#13189) with commit ef5d46b533550880fd09dc9f49398bc3d6e4c445. No major bugs fixed this month; the primary impact was improved PR routing, clearer ownership, and faster review cycles for PWGUD contributions. Technologies demonstrated: repository governance, CODEOWNERS syntax, infrastructure automation, and cross-team collaboration.
1 Commits • 1 Features
Oct 1, 2025October 2025 (Month: 2025-10) – Governance-focused contributions in AliceO2Group/O2Physics. Delivered a targeted feature: Code Ownership Update for PWGUD, aligning CODEOWNERS with the new PWGUD team assignments and including Tutorials/PWGUD directories to ensure proper code reviews and accountability. Implemented via infrastructure change [Infrastructure] Update CODEOWNERS (#13189) with commit ef5d46b533550880fd09dc9f49398bc3d6e4c445. No major bugs fixed this month; the primary impact was improved PR routing, clearer ownership, and faster review cycles for PWGUD contributions. Technologies demonstrated: repository governance, CODEOWNERS syntax, infrastructure automation, and cross-team collaboration.
October 2025
July 2025
4 Commits • 2 Features
Jul 1, 2025July 2025 (AliceO2Group/O2Physics) focused on delivering feature enhancements for RCT flags use in UPC analyses and tau event selection, strengthening test infrastructure, and updating governance to reflect evolving team ownership. The changes improve analysis accuracy, configurability, and operational transparency, enabling more robust production of UD tables and tau event selections while reducing maintenance risk.
July 2025
4 Commits • 2 Features
Jul 1, 2025July 2025 (AliceO2Group/O2Physics) focused on delivering feature enhancements for RCT flags use in UPC analyses and tau event selection, strengthening test infrastructure, and updating governance to reflect evolving team ownership. The changes improve analysis accuracy, configurability, and operational transparency, enabling more robust production of UD tables and tau event selections while reducing maintenance risk.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 — Delivered the Two-Track Event Table Producer with Monte Carlo Truth Data in O2Physics, enhancing UPC collision data analysis by producing per-event and per-track information along with associated MC truth data. This enables more precise selection, richer analytics, and reproducible results in offline workflows. Also implemented targeted improvements to existing personal task analysis functionalities, contributing to smoother task tracking and reporting. The work aligns with ongoing efforts to expand data-model completeness and analysis utility in the O2 physics stack.
1 Commits • 1 Features
Jun 1, 2025June 2025 — Delivered the Two-Track Event Table Producer with Monte Carlo Truth Data in O2Physics, enhancing UPC collision data analysis by producing per-event and per-track information along with associated MC truth data. This enables more precise selection, richer analytics, and reproducible results in offline workflows. Also implemented targeted improvements to existing personal task analysis functionalities, contributing to smoother task tracking and reporting. The work aligns with ongoing efforts to expand data-model completeness and analysis utility in the O2 physics stack.
June 2025
April 2025
5 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for AliceO2Group/O2Physics focused on delivering end-to-end tau analysis capabilities and robust event filtering. Three key features were released, with emphasis on MC truth integration, data enrichment for tau reconstruction, and flexible preselection to improve analysis robustness. The work enhances physics accuracy, reproducibility, and throughput across analysis pipelines.
April 2025
5 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary for AliceO2Group/O2Physics focused on delivering end-to-end tau analysis capabilities and robust event filtering. Three key features were released, with emphasis on MC truth integration, data enrichment for tau reconstruction, and flexible preselection to improve analysis robustness. The work enhances physics accuracy, reproducibility, and throughput across analysis pipelines.
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025: Delivered a significant Tau analysis upgrade in AliceO2Group/O2Physics, improving data quality and analysis capability. Implemented event selection bit storage in UDtables, converter/producer updates, and refined tau candidate logic in UpcTauRl to avoid electron misidentification. Expanded PWGUD tau processing with new data columns (track time resolution, TPC inner parameters, TOF momentum), refined pre-selection cuts for electron and muon/pion candidates, and introduced rejection histogramming for monitoring. These changes provide cleaner tau datasets, better observability, and a stronger foundation for physics analyses.
3 Commits • 1 Features
Mar 1, 2025March 2025: Delivered a significant Tau analysis upgrade in AliceO2Group/O2Physics, improving data quality and analysis capability. Implemented event selection bit storage in UDtables, converter/producer updates, and refined tau candidate logic in UpcTauRl to avoid electron misidentification. Expanded PWGUD tau processing with new data columns (track time resolution, TPC inner parameters, TOF momentum), refined pre-selection cuts for electron and muon/pion candidates, and introduced rejection histogramming for monitoring. These changes provide cleaner tau datasets, better observability, and a stronger foundation for physics analyses.
March 2025
February 2025
6 Commits • 5 Features
Feb 1, 2025February 2025 monthly summary for AliceO2Group/O2Physics focusing on delivering new analysis capabilities, refining particle identification, and consolidating event selection workflows to improve physics reach and production reliability. Achievements span across UD MC validation, UPC Tau analysis, ITSROF studies, UpcTauRl configuration, and mixed-event analyses, with emphasis on reproducibility, performance, and tangible business value.
February 2025
6 Commits • 5 Features
Feb 1, 2025February 2025 monthly summary for AliceO2Group/O2Physics focusing on delivering new analysis capabilities, refining particle identification, and consolidating event selection workflows to improve physics reach and production reliability. Achievements span across UD MC validation, UPC Tau analysis, ITSROF studies, UpcTauRl configuration, and mixed-event analyses, with emphasis on reproducibility, performance, and tangible business value.
January 2025
5 Commits • 2 Features
Jan 1, 2025January 2025 monthly performance summary for AliceO2Group/O2Physics. Focused on UpcTau central barrel tau analysis and Kstar invariant mass histogram enhancements. Implemented Kstar invariant mass histograms and refined labels for pion invariant masses; refactored UpcTauCentralBarrelRL to UpcTauRl with expanded histograms and configuration for tau analysis (electron and pion/kaon channels), and improved PID-related histogramming. Fixed a memory leak by reworking track indices storage and introducing vecPVnewPIDidx for correct data association when useThresholdsPID is enabled. These changes boost analysis precision, robustness, and configurability, delivering tangible business value for UPC physics analyses.
5 Commits • 2 Features
Jan 1, 2025January 2025 monthly performance summary for AliceO2Group/O2Physics. Focused on UpcTau central barrel tau analysis and Kstar invariant mass histogram enhancements. Implemented Kstar invariant mass histograms and refined labels for pion invariant masses; refactored UpcTauCentralBarrelRL to UpcTauRl with expanded histograms and configuration for tau analysis (electron and pion/kaon channels), and improved PID-related histogramming. Fixed a memory leak by reworking track indices storage and introducing vecPVnewPIDidx for correct data association when useThresholdsPID is enabled. These changes boost analysis precision, robustness, and configurability, delivering tangible business value for UPC physics analyses.
January 2025
December 2024
5 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for AliceO2Group/O2Physics focusing on tau physics enhancements and logging improvements. Delivered three major features improving tau event analysis, PID, and event logging, along with maintainability improvements. Business value includes more precise tau-related physics analyses, better channel classification, and cleaner operational logs, enabling faster iteration and more reliable results.
December 2024
5 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for AliceO2Group/O2Physics focusing on tau physics enhancements and logging improvements. Delivered three major features improving tau event analysis, PID, and event logging, along with maintainability improvements. Business value includes more precise tau-related physics analyses, better channel classification, and cleaner operational logs, enabling faster iteration and more reliable results.
November 2024
2 Commits • 1 Features
Nov 1, 2024November 2024 — AliceO2Group/O2Physics: Delivered key analysis tooling enhancements and a critical data-integrity fix. Key features delivered: Enhanced Personal Task Analysis with new enums for particle types and tau channels, reorganized configurable parameters into logical groups, and added MC truth histogramming options to improve analysis capabilities. Major bugs fixed: Corrected UDMCPARTICLE and UDMCCOLLISION table name literals to reflect the intended database schema, preventing potential data access issues due to schema mismatch. Overall impact: Improved data integrity, more flexible and scalable analysis workflows, and richer MC truth capabilities, enabling more reliable physics results and faster iteration. Technologies/skills demonstrated: C++ macro-level code maintenance, refactoring, enums design, histogramming, parameter management, and cross-team collaboration in PWGUD.
2 Commits • 1 Features
Nov 1, 2024November 2024 — AliceO2Group/O2Physics: Delivered key analysis tooling enhancements and a critical data-integrity fix. Key features delivered: Enhanced Personal Task Analysis with new enums for particle types and tau channels, reorganized configurable parameters into logical groups, and added MC truth histogramming options to improve analysis capabilities. Major bugs fixed: Corrected UDMCPARTICLE and UDMCCOLLISION table name literals to reflect the intended database schema, preventing potential data access issues due to schema mismatch. Overall impact: Improved data integrity, more flexible and scalable analysis workflows, and richer MC truth capabilities, enabling more reliable physics results and faster iteration. Technologies/skills demonstrated: C++ macro-level code maintenance, refactoring, enums design, histogramming, parameter management, and cross-team collaboration in PWGUD.
November 2024
October 2024
1 Commits • 1 Features
Oct 1, 2024October 2024 monthly work summary for AliceO2Group/O2Physics focusing on feature delivery and bug fixes related to UPCCandidateProducer and tau-event filtering. Delivered generalization of UPCCandidateProducer to support multiple track collection types via template parameters for BCsWithBcSels, and refactored UpcTauCentralBarrelRL to include tau-event selection criteria, enabling improved tau filtering. Addressed a UPCCandProducer-related issue arising after upcflag introduction (commit 77fa4e8eaa0ec75d9bfbf27d8ee0feac403112ba) as part of a bug fix. These changes enhance modularity, testability, and robustness of the UPCE analysis workflow, reducing future maintenance risk and enabling broader physics analyses.
October 2024
1 Commits • 1 Features
Oct 1, 2024October 2024 monthly work summary for AliceO2Group/O2Physics focusing on feature delivery and bug fixes related to UPCCandidateProducer and tau-event filtering. Delivered generalization of UPCCandidateProducer to support multiple track collection types via template parameters for BCsWithBcSels, and refactored UpcTauCentralBarrelRL to include tau-event selection criteria, enabling improved tau filtering. Addressed a UPCCandProducer-related issue arising after upcflag introduction (commit 77fa4e8eaa0ec75d9bfbf27d8ee0feac403112ba) as part of a bug fix. These changes enhance modularity, testability, and robustness of the UPCE analysis workflow, reducing future maintenance risk and enabling broader physics analyses.
Activity
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Quality Metrics
Correctness84.8%
Maintainability83.0%
Architecture83.6%
Performance71.4%
AI Usage21.6%
Skills & Technologies
Programming Languages
C++None
Technical Skills
C++C++ DevelopmentC++ programmingCMakeCode OwnershipConfiguration ManagementData AnalysisData FilteringData ModelingData ProcessingData StructuresDatabase Schema ManagementDebuggingDetector SimulationEvent Reconstruction
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