kelseymh/G4CMP
Mar 2025 – Jan 2026
6 Months active
Languages Used
ConfigurationTextC++textCMakeMarkdownPlain Text
Technical Skills
Configuration ManagementDocumentationMaterial SciencePhysics SimulationC++Compiler Warnings
Stefan Zatschler
PROFILE
Stefan Zatschler
Stefan Zatschler contributed to the kelseymh/G4CMP repository by developing and refining features for material property simulation, build configuration, and visualization in C++ and CMake. Over six months, he improved phonon property modeling for Ge/Si materials, enhanced simulation accuracy, and ensured data provenance through literature-backed updates. Stefan addressed compiler warnings and build system issues, standardizing C++ version handling and stabilizing CI workflows. He expanded visualization export formats and improved documentation and licensing compliance, supporting both scientific computing and high-energy physics use cases. His work demonstrated depth in cross-platform development, code refactoring, and configuration management, resulting in a robust, maintainable codebase.
Overall Statistics
Feature vs Bugs
58%Features
Repository Contributions
22Total
Bugs
5
Commits
22
Features
7
Lines of code
395
Activity Months6
Your Network
36 peopleShared Repositories
24
Caitlyn Stone-WhiteheadMember
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David SadekMember
David SadekMember
David SadekMember
David SadekMember
David SadekMember
David SadekMember
Work History
January 2026
7 Commits • 2 Features
Jan 1, 2026January 2026 monthly summary for kelseymh/G4CMP: Delivered feature enhancements and build-system refinements with a focus on maintainability and CI-readiness. Key features: Quasiparticle example cleanup and streamlining; Build system improvements for out-of-source builds. Major bug fix: cleaned up an unused parameter in a lattice change safety check to resolve a compiler warning. Overall impact: clearer code, reduced build warnings, and improved global readability of the G4CMP codebase. Technologies demonstrated: CMake/build-system optimization, G4VisAttributes and G4String usage improvements, macro readability enhancements, and general code cleanup.
7 Commits • 2 Features
Jan 1, 2026January 2026 monthly summary for kelseymh/G4CMP: Delivered feature enhancements and build-system refinements with a focus on maintainability and CI-readiness. Key features: Quasiparticle example cleanup and streamlining; Build system improvements for out-of-source builds. Major bug fix: cleaned up an unused parameter in a lattice change safety check to resolve a compiler warning. Overall impact: clearer code, reduced build warnings, and improved global readability of the G4CMP codebase. Technologies demonstrated: CMake/build-system optimization, G4VisAttributes and G4String usage improvements, macro readability enhancements, and general code cleanup.
January 2026
December 2025
5 Commits • 2 Features
Dec 1, 2025December 2025: Focused on visual quality, compatibility, and documentation. Implemented enhancements to visualization export for phonon and charge macros, addressed Geant4 warnings by completing hyperN daughter definitions and ensuring cross-version compatibility, and updated the Geant4 license/docs to plain text for accessibility and compliance. These changes deliver clearer, higher-quality graphics output, more stable builds across Geant4 v10/v11, reduced maintenance burden, and improved licensing clarity for downstream users.
December 2025
5 Commits • 2 Features
Dec 1, 2025December 2025: Focused on visual quality, compatibility, and documentation. Implemented enhancements to visualization export for phonon and charge macros, addressed Geant4 warnings by completing hyperN daughter definitions and ensuring cross-version compatibility, and updated the Geant4 license/docs to plain text for accessibility and compliance. These changes deliver clearer, higher-quality graphics output, more stable builds across Geant4 v10/v11, reduced maintenance burden, and improved licensing clarity for downstream users.
November 2025
4 Commits • 2 Features
Nov 1, 2025November 2025 (kelseymh/G4CMP): This month focused on stabilizing the build, standardizing C++ version handling across Geant4 examples, and expanding visualization export formats. Key actions included fixing CMake configuration issues and header inclusions to prevent CI failures, unifying the C++ standard version across example builds to improve compatibility and developer experience, and extending visualization macros to support additional export formats for downstream workflows. These changes reduce CI noise, lower onboarding friction for new contributors, and improve the reliability of end-user workflows when building, running, and visualizing Geant4 applications.
4 Commits • 2 Features
Nov 1, 2025November 2025 (kelseymh/G4CMP): This month focused on stabilizing the build, standardizing C++ version handling across Geant4 examples, and expanding visualization export formats. Key actions included fixing CMake configuration issues and header inclusions to prevent CI failures, unifying the C++ standard version across example builds to improve compatibility and developer experience, and extending visualization macros to support additional export formats for downstream workflows. These changes reduce CI noise, lower onboarding friction for new contributors, and improve the reliability of end-user workflows when building, running, and visualizing Geant4 applications.
November 2025
October 2025
1 Commits
Oct 1, 2025Month: 2025-10 - Concise monthly summary for kelseymh/G4CMP focused on code quality and stability. Primary effort was to resolve compiler warnings by addressing shadowed declarations and modifying return conditions, improving maintainability and cross-compiler reliability with GCC toolchains.
October 2025
1 Commits
Oct 1, 2025Month: 2025-10 - Concise monthly summary for kelseymh/G4CMP focused on code quality and stability. Primary effort was to resolve compiler warnings by addressing shadowed declarations and modifying return conditions, improving maintainability and cross-compiler reliability with GCC toolchains.
April 2025
3 Commits
Apr 1, 2025Concise monthly summary for 2025-04 focusing on compiler hygiene and build health for the G4CMP component, with traceable changes and no behavioral regressions.
3 Commits
Apr 1, 2025Concise monthly summary for 2025-04 focusing on compiler hygiene and build health for the G4CMP component, with traceable changes and no behavioral regressions.
April 2025
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for kelseymh/G4CMP: Delivered data-driven phonon property improvements for Ge/Si bulk materials. Updated anharmonic decay rate to align with Tamura, PRB 31(4) 1985 and added literature references for Si bulk phonon downconversion and scattering rate. Improved traceability of data provenance and enhanced accuracy of material-property simulations, supporting more reliable thermal transport predictions.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for kelseymh/G4CMP: Delivered data-driven phonon property improvements for Ge/Si bulk materials. Updated anharmonic decay rate to align with Tamura, PRB 31(4) 1985 and added literature references for Si bulk phonon downconversion and scattering rate. Improved traceability of data provenance and enhanced accuracy of material-property simulations, supporting more reliable thermal transport predictions.
Activity
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Quality Metrics
Correctness98.2%
Maintainability93.6%
Architecture91.8%
Performance92.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CMakeConfigurationMarkdownPlain TextTexttext
Technical Skills
Build ConfigurationBuild SystemsC++C++ developmentC++ programmingCMakeCompiler WarningsConfiguration ManagementCross-Platform DevelopmentDocumentationLicensing ComplianceMaterial SciencePhysics SimulationSoftware Maintenancealgorithm optimization
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