
During March 2025, Linh Bui enhanced the star-bnl/star-sw repository by implementing a new centrality definition for O+O 200 GeV collisions, leveraging total MIP (totnMIP) to improve the accuracy of event characterization in high energy physics analyses. Linh updated centrality parameters for Au+Au 9.8 AGeV, broadening the system and energy coverage within the STAR experiment’s analysis framework. The work involved C++ development, data analysis, and domain-specific parameter tuning, resulting in streamlined centrality calculations and more consistent comparisons across collision systems. No major bugs were reported, reflecting a focused, well-validated change set and disciplined version control practices.

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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