
Developed and integrated a new O+O 200 GeV centrality definition based on total MIP (totnMIP) within the star-bnl/star-sw repository, enhancing the accuracy of centrality characterization for heavy-ion collisions. Leveraged C++ and data analysis skills to update centrality parameters for Au+Au 9.8 AGeV, broadening the system and energy coverage for STAR experiment analyses. The work involved end-to-end pipeline extension, including mapping, parameter tuning, and validation for new collision configurations. By streamlining centrality definitions and ensuring version-controlled, auditable changes, the developer improved consistency and reduced systematic uncertainties in event characterization without introducing breaking changes or major bugs.
March 2025 Monthly Summary: Key features delivered: - Implemented a new O+O 200 GeV centrality definition based on total MIP (totnMIP) in the star-bnl/star-sw pipeline, enabling more accurate centrality characterization for O+O at 200 GeV. - Updated Au+Au 9.8 AGeV centrality parameters to broaden energy/system coverage and improve calibration of centrality metrics. Major bugs fixed: - No major bugs fixed reported this month; no breaking changes introduced in the centrality pipeline. Overall impact and accomplishments: - Expanded system/energy coverage for centrality calculations, improving physics analysis accuracy and reducing systematic uncertainties in STAR event characterization. - Streamlined centrality definitions across configurations, facilitating more consistent comparisons across collision systems. Technologies/skills demonstrated: - Domain expertise in heavy-ion centrality concepts (totnMIP-based definitions) and parameter tuning. - Version control discipline with a focused, auditable change set (commit 83175f6ade574f171b582896812d7d2113752427). - End-to-end pipeline extension including mapping, definitions, and validation for new collision configurations.
March 2025 Monthly Summary: Key features delivered: - Implemented a new O+O 200 GeV centrality definition based on total MIP (totnMIP) in the star-bnl/star-sw pipeline, enabling more accurate centrality characterization for O+O at 200 GeV. - Updated Au+Au 9.8 AGeV centrality parameters to broaden energy/system coverage and improve calibration of centrality metrics. Major bugs fixed: - No major bugs fixed reported this month; no breaking changes introduced in the centrality pipeline. Overall impact and accomplishments: - Expanded system/energy coverage for centrality calculations, improving physics analysis accuracy and reducing systematic uncertainties in STAR event characterization. - Streamlined centrality definitions across configurations, facilitating more consistent comparisons across collision systems. Technologies/skills demonstrated: - Domain expertise in heavy-ion centrality concepts (totnMIP-based definitions) and parameter tuning. - Version control discipline with a focused, auditable change set (commit 83175f6ade574f171b582896812d7d2113752427). - End-to-end pipeline extension including mapping, definitions, and validation for new collision configurations.

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