sPHENIX-Collaboration/analysis
Nov 2024 – Jun 2026
8 Months active
Languages Used
CC++ShellBashROOT
Technical Skills
C++ DevelopmentDetector SimulationEvent GenerationParticle Physics SimulationData AnalysisParticle Physics
cdean-github
PROFILE
Cdean-github
Contributed to the sPHENIX-Collaboration/analysis repository by developing and refining C++ and ROOT-based workflows for particle physics analysis, simulation, and data processing over eight months. Built modular pipelines for meson selection, cascade reconstruction, and signal yield extraction, integrating event generation, detector simulation, and advanced histogramming. Enhanced geometric acceptance studies, implemented visualization-ready event display generators in JSON, and improved data quality controls through targeted data exclusions and code refactoring. Leveraged Bash scripting for automation and database-backed macros for luminosity counting, resulting in reproducible, maintainable analysis environments. The work demonstrated depth in scientific computing, data visualization, and end-to-end workflow optimization.
Overall Statistics
Feature vs Bugs
94%Features
Repository Contributions
28Total
Bugs
1
Commits
28
Features
15
Lines of code
16,344,457
Activity Months8
Your Network
389 peopleSame Organization
@cern.ch340
Shared Repositories
49
ahodges21Member
Antonio SilvaMember
aopattonMember
bkimelmanMember
Mickey ChiuMember
Cheng-Wei ShihMember
Derek M AndersonMember
Daniel J LisMember
Daniel J LisMember
Work History
June 2026
11 Commits • 5 Features
Jun 1, 2026June 2026 focused on delivering visualization capabilities and robust data-analysis pipelines within sPHENIX-Collaboration/analysis. Delivered a visualization-ready event display generator (JSON), enhanced the geometric acceptance analysis for light flavor (LF) particles with improved data processing and output formats, and implemented an end-to-end signal-yield extraction workflow from background fits for Kshort and Lambda, including data processing, histogram creation, and plot generation with stability improvements to the background fitting. Added pion ratio fitting in both Kshort decay data and charged hadron analyses, featuring histogram creation, polynomial fitting, and clear visual plots. Across these efforts, bug fixes and stability improvements were applied to background fitting and LF data processing to improve reliability and accuracy. These contributions increase the quality and speed of physics analyses, enable clearer visualization for collaboration reviews, and demonstrate strong proficiency in C++, ROOT-based data workflows, histogramming, and JSON generation.
11 Commits • 5 Features
Jun 1, 2026June 2026 focused on delivering visualization capabilities and robust data-analysis pipelines within sPHENIX-Collaboration/analysis. Delivered a visualization-ready event display generator (JSON), enhanced the geometric acceptance analysis for light flavor (LF) particles with improved data processing and output formats, and implemented an end-to-end signal-yield extraction workflow from background fits for Kshort and Lambda, including data processing, histogram creation, and plot generation with stability improvements to the background fitting. Added pion ratio fitting in both Kshort decay data and charged hadron analyses, featuring histogram creation, polynomial fitting, and clear visual plots. Across these efforts, bug fixes and stability improvements were applied to background fitting and LF data processing to improve reliability and accuracy. These contributions increase the quality and speed of physics analyses, enable clearer visualization for collaboration reviews, and demonstrate strong proficiency in C++, ROOT-based data workflows, histogramming, and JSON generation.
June 2026
May 2026
1 Commits • 1 Features
May 1, 2026May 2026 monthly summary for sPHENIX-Collaboration/analysis: Implemented a new analysis capability to support PPG16 by adding a PT Cut Retention Calculator. The work enhances data analysis precision and enables more accurate retention studies within the PPG16 workflow.
May 2026
1 Commits • 1 Features
May 1, 2026May 2026 monthly summary for sPHENIX-Collaboration/analysis: Implemented a new analysis capability to support PPG16 by adding a PT Cut Retention Calculator. The work enhances data analysis precision and enables more accurate retention studies within the PPG16 workflow.
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary focusing on code quality and maintainability in the sPHENIX-Collaboration/analysis repository. Delivered a code cleanup and maintainability improvement by removing commented-out extraneous code, reducing technical debt and preparing the codebase for faster future work. No major bugs were fixed in this period for the provided scope. The changes improve readability, onboarding, and long-term stability, enabling safer refactors and feature work.
1 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary focusing on code quality and maintainability in the sPHENIX-Collaboration/analysis repository. Delivered a code cleanup and maintainability improvement by removing commented-out extraneous code, reducing technical debt and preparing the codebase for faster future work. No major bugs were fixed in this period for the provided scope. The changes improve readability, onboarding, and long-term stability, enabling safer refactors and feature work.
April 2026
March 2026
6 Commits • 4 Features
Mar 1, 2026March 2026 monthly summary for sPHENIX-Collaboration/analysis: Delivered core analysis and simulation tooling enhancements with measurable business value including improved geometry acceptance, data handling, and processing efficiency. Key deliverables span acceptance and tracking calculations for Lambda/K_S0 decays, robust simulation input handling, luminosity counting, and a G4hits preprocessing utility. These changes enable more accurate physics measurements, faster data processing, and easier maintainability.
March 2026
6 Commits • 4 Features
Mar 1, 2026March 2026 monthly summary for sPHENIX-Collaboration/analysis: Delivered core analysis and simulation tooling enhancements with measurable business value including improved geometry acceptance, data handling, and processing efficiency. Key deliverables span acceptance and tracking calculations for Lambda/K_S0 decays, robust simulation input handling, luminosity counting, and a G4hits preprocessing utility. These changes enable more accurate physics measurements, faster data processing, and easier maintainability.
May 2025
3 Commits • 1 Features
May 1, 2025May 2025 monthly summary for sPHENIX-Collaboration/analysis: Delivered a production configuration overhaul for QM25, consolidating KFP updates and enabling DST writing. Key feature work included updating DST saving and refining decay/track/vertex parameters (decay length/time ranges, minimum significance for decay properties, minimum inner hits, and max daughter DCA in XY). Environment setup script was updated to support QM25 production. No major bug fixes were reported this month.
3 Commits • 1 Features
May 1, 2025May 2025 monthly summary for sPHENIX-Collaboration/analysis: Delivered a production configuration overhaul for QM25, consolidating KFP updates and enabling DST writing. Key feature work included updating DST saving and refining decay/track/vertex parameters (decay length/time ranges, minimum significance for decay properties, minimum inner hits, and max daughter DCA in XY). Environment setup script was updated to support QM25 production. No major bug fixes were reported this month.
May 2025
April 2025
4 Commits • 1 Features
Apr 1, 2025In April 2025, the analysis work in the sPHENIX-Collaboration/analysis repository delivered a significant expansion of meson analysis capabilities and strengthened data quality controls. Key features include D0 tooling with Lambda-pi cascade reconstruction using a KS0 fitter, along with plotting distributions and mass fits, supported by a KS0 fitter macro to streamline decays analyses and an updated KFP example to reflect the new workflow. The changes enable Xi/Omega analyses and faster, validated results. A major data-quality improvement was implementing an exclusion of run 53879 from D0 production data to prevent corrupted data from biasing results. Overall, these updates expand physics reach, improve reliability, and demonstrate proficiency in ROOT/C++ analysis, macro/configuration management, and end-to-end workflow improvements.
April 2025
4 Commits • 1 Features
Apr 1, 2025In April 2025, the analysis work in the sPHENIX-Collaboration/analysis repository delivered a significant expansion of meson analysis capabilities and strengthened data quality controls. Key features include D0 tooling with Lambda-pi cascade reconstruction using a KS0 fitter, along with plotting distributions and mass fits, supported by a KS0 fitter macro to streamline decays analyses and an updated KFP example to reflect the new workflow. The changes enable Xi/Omega analyses and faster, validated results. A major data-quality improvement was implementing an exclusion of run 53879 from D0 production data to prevent corrupted data from biasing results. Overall, these updates expand physics reach, improve reliability, and demonstrate proficiency in ROOT/C++ analysis, macro/configuration management, and end-to-end workflow improvements.
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Implemented QCD Meson Selection and Reconstruction in the sPHENIX analysis framework. Added new C++ scripts for meson selection/reconstruction, configured the Fun4All server to process DST inputs, and registered analysis modules for particle reconstruction including KFParticle across decay channels. Integrated changes under commit e985c72f21296b66c4fd83b7e50a4106d052dd34 to enable repeatable analyses and QCD studies. Major bugs fixed: none reported. Overall impact: scalable, modular analysis pipeline that improves QCD meson study capabilities and DST processing throughput. Technologies demonstrated: C++, KFParticle, Fun4All, DST handling, module orchestration.
1 Commits • 1 Features
Mar 1, 2025March 2025: Implemented QCD Meson Selection and Reconstruction in the sPHENIX analysis framework. Added new C++ scripts for meson selection/reconstruction, configured the Fun4All server to process DST inputs, and registered analysis modules for particle reconstruction including KFParticle across decay channels. Integrated changes under commit e985c72f21296b66c4fd83b7e50a4106d052dd34 to enable repeatable analyses and QCD studies. Major bugs fixed: none reported. Overall impact: scalable, modular analysis pipeline that improves QCD meson study capabilities and DST processing throughput. Technologies demonstrated: C++, KFParticle, Fun4All, DST handling, module orchestration.
March 2025
November 2024
1 Commits • 1 Features
Nov 1, 2024In November 2024, the sPHENIX-Collaboration/analysis repository delivered Kshort and D_(s)+ particle support within the KFParticle workflow. The update adds generation and fitting configurations for these particles, including decay descriptors, particle IDs, and Pythia8 steering cards/decay files, with refined output naming and directory structure to improve simulation organization, traceability, and reproducibility. This work expands the physics reach for heavy-flavor analyses and strengthens the KFParticle framework for future particle extensions.
November 2024
1 Commits • 1 Features
Nov 1, 2024In November 2024, the sPHENIX-Collaboration/analysis repository delivered Kshort and D_(s)+ particle support within the KFParticle workflow. The update adds generation and fitting configurations for these particles, including decay descriptors, particle IDs, and Pythia8 steering cards/decay files, with refined output naming and directory structure to improve simulation organization, traceability, and reproducibility. This work expands the physics reach for heavy-flavor analyses and strengthens the KFParticle framework for future particle extensions.
Activity
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Quality Metrics
Correctness87.2%
Maintainability83.6%
Architecture82.8%
Performance78.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
BashCC++ROOTShell
Technical Skills
C++C++ DevelopmentC++ developmentC++ programmingData AnalysisData ReconstructionDetector SimulationEvent GenerationHigh Energy PhysicsParticle PhysicsParticle Physics AnalysisParticle Physics SimulationROOT FrameworkROOT frameworkShell Scripting
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