atcollab/at
Dec 2024 – Oct 2025
5 Months active
Languages Used
MATLABPythonCC++
Technical Skills
Code RefactoringLibrary DevelopmentNumerical AnalysisPhysicsAccelerator PhysicsC Programming
Simon White
PROFILE
Simon White
Contributed to the atcollab/at repository by developing and refining advanced accelerator physics simulation features, including resonance driving term analysis, GPU-accelerated aperture checks, and quantum diffusion matrix stabilization. Leveraged Python, C++, and NumPy to implement cross-language modules, optimize performance, and ensure compatibility with evolving scientific computing standards. Enhanced data serialization and introduced new simulation elements such as CrabCavityPass, while also addressing critical bugs in orbit calculations and numerical stability. Improved code documentation and testing practices to support maintainability and onboarding. The work emphasized robust numerical analysis, object-oriented design, and reliable scientific modeling for particle accelerator research and development.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
7Total
Bugs
2
Commits
7
Features
5
Lines of code
2,365
Activity Months5
Your Network
30 peopleSame Organization
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Laurent FarvacqueMember
lcarverMember
Shared Repositories
7
Work History
October 2025
1 Commits
Oct 1, 2025Month 2025-10: Focused on stabilizing the quantum diffusion matrix calculations in the atcollab/at repository to improve reliability and business value of simulations. Delivered a Quantum Diffusion Matrix Numerical Stability Fix that introduces a symmetric-matrix formulation with reconstruction, and applies an eigenvalue threshold for noise suppression. Also enhanced tests and refined tolerance parameters to ensure stability across scenarios.
1 Commits
Oct 1, 2025Month 2025-10: Focused on stabilizing the quantum diffusion matrix calculations in the atcollab/at repository to improve reliability and business value of simulations. Delivered a Quantum Diffusion Matrix Numerical Stability Fix that introduces a symmetric-matrix formulation with reconstruction, and applies an eigenvalue threshold for noise suppression. Also enhanced tests and refined tolerance parameters to ensure stability across scenarios.
October 2025
September 2025
1 Commits
Sep 1, 2025September 2025 monthly summary for atcollab/at focused on correcting orbit calculations and refactoring to improve reliability and accuracy of reference point handling. No new features released this month; the emphasis was on a critical bug fix and code quality improvements that ensure downstream models and analyses operate on correct orbit data, improving trust and reducing risk of incorrect results.
September 2025
1 Commits
Sep 1, 2025September 2025 monthly summary for atcollab/at focused on correcting orbit calculations and refactoring to improve reliability and accuracy of reference point handling. No new features released this month; the emphasis was on a critical bug fix and code quality improvements that ensure downstream models and analyses operate on correct orbit data, improving trust and reducing risk of incorrect results.
July 2025
2 Commits • 2 Features
Jul 1, 2025In July 2025, delivered GPU-accelerated aperture checks and improved AT code documentation in the atcollab/at repository, driving performance gains and better developer onboarding. Focus areas included enforcing particle-tracking aperture constraints via GPU, and clarifying code behavior for future maintainability.
2 Commits • 2 Features
Jul 1, 2025In July 2025, delivered GPU-accelerated aperture checks and improved AT code documentation in the atcollab/at repository, driving performance gains and better developer onboarding. Focus areas included enforcing particle-tracking aperture constraints via GPU, and clarifying code behavior for future maintainability.
July 2025
June 2025
2 Commits • 2 Features
Jun 1, 2025Monthly summary for 2025-06 focusing on key feature deliveries, major bug fixes, impact, and technical capabilities demonstrated in atcollab/at.
June 2025
2 Commits • 2 Features
Jun 1, 2025Monthly summary for 2025-06 focusing on key feature deliveries, major bug fixes, impact, and technical capabilities demonstrated in atcollab/at.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 — Delivered Resonance Driving Terms (RDT) support in pyat. Introduced a dedicated rdt module with functions to compute focusing, coupling, chromatic, geometric, and tuneshift RDTs, and updated MATLAB and Python physics modules to integrate RDT functionality and ensure cross-language compatibility. The work is anchored by commit 92a2f73e3a04662e7caa9b2b12aeb8f58da7644a (Compute RDTs (#821)). This enhancement expands resonance analysis capabilities, enabling more accurate modeling and informed design decisions, and sets the foundation for validation and benchmarking workflows across Python and MATLAB toolchains.
1 Commits • 1 Features
Dec 1, 2024December 2024 — Delivered Resonance Driving Terms (RDT) support in pyat. Introduced a dedicated rdt module with functions to compute focusing, coupling, chromatic, geometric, and tuneshift RDTs, and updated MATLAB and Python physics modules to integrate RDT functionality and ensure cross-language compatibility. The work is anchored by commit 92a2f73e3a04662e7caa9b2b12aeb8f58da7644a (Compute RDTs (#821)). This enhancement expands resonance analysis capabilities, enabling more accurate modeling and informed design decisions, and sets the foundation for validation and benchmarking workflows across Python and MATLAB toolchains.
December 2024
Activity
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Quality Metrics
Correctness90.0%
Maintainability82.8%
Architecture84.2%
Performance75.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
CC++MATLABPython
Technical Skills
Accelerator PhysicsC ProgrammingC++Code RefactoringData SerializationDocumentationGPU ProgrammingLibrary DevelopmentLinear AlgebraMATLAB ScriptingNumPy IntegrationNumerical AnalysisObject-Oriented DesignParticle Accelerator PhysicsPerformance Optimization
Repositories Contributed To
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