atcollab/at
Mar 2025 – Jan 2026
7 Months active
Languages Used
CMATLABPython
Technical Skills
Accelerator PhysicsC DevelopmentCode RefactoringNumerical SimulationPython DevelopmentTesting
lcarver
PROFILE
Lcarver
Worked on the atcollab/at repository, delivering nine features and resolving four bugs over seven months to enhance accelerator physics simulations. Focused on improving simulation fidelity and reliability by implementing advanced feedback loops, refining radiation modeling, and enabling non-linear chromaticity calculations. Used C, Python, and MATLAB to synchronize core logic and APIs, ensuring cross-language consistency and maintainability. Addressed critical issues in beam loading and passive cavity control, introduced new control modes, and expanded support for 6D beam dynamics. Emphasized robust testing, documentation, and collaborative development, resulting in more accurate, stable, and extensible scientific computing workflows for accelerator modeling.
Overall Statistics
Feature vs Bugs
69%Features
Repository Contributions
13Total
Bugs
4
Commits
13
Features
9
Lines of code
2,355
Activity Months7
Your Network
32 peopleSame Organization
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Alejandro Homs PuronMember
Antonia BetevaMember
Marjolaine BodinMember
Alejandro De Maria AntolinosMember
Edgar Gutierrez FernandezMember
paynoMember
Jerome KiefferMember
Laurent FarvacqueMember
Work History
January 2026
2 Commits • 1 Features
Jan 1, 20262026-01 monthly summary: Fixed a critical energy-loss double-counting issue in SimpleRadiationRadPass and delivered a significantly enhanced Beam Loading module with an mbtrack1-based feedback loop. These changes improve numerical accuracy, runtime stability, and expand support for 6D beam dynamics, directly increasing simulation fidelity and operational reliability. Documentation and tests were updated to reflect the new behavior and to facilitate onboarding for customers and new engineers.
2 Commits • 1 Features
Jan 1, 20262026-01 monthly summary: Fixed a critical energy-loss double-counting issue in SimpleRadiationRadPass and delivered a significantly enhanced Beam Loading module with an mbtrack1-based feedback loop. These changes improve numerical accuracy, runtime stability, and expand support for 6D beam dynamics, directly increasing simulation fidelity and operational reliability. Documentation and tests were updated to reflect the new behavior and to facilitate onboarding for customers and new engineers.
January 2026
December 2025
2 Commits • 2 Features
Dec 1, 2025December 2025 — Delivered two high-impact features in atcollab/at, improving simulation fidelity and data consistency, with test realignment to reflect new behavior and maintainable validation. No critical bugs identified; test fixes ensured alignment with updated output order and co-authored contributions from team members.
December 2025
2 Commits • 2 Features
Dec 1, 2025December 2025 — Delivered two high-impact features in atcollab/at, improving simulation fidelity and data consistency, with test realignment to reflect new behavior and maintainable validation. No critical bugs identified; test fixes ensured alignment with updated output order and co-authored contributions from team members.
August 2025
2 Commits • 1 Features
Aug 1, 2025Performance summary for 2025-08: Delivered high-impact fixes and feature work in atcollab/at that improve simulation fidelity, stability, and API consistency. Focused on correcting a critical passive cavity voltage loop bug and enabling constant wake potentials for dipole kicks in wakefield simulations, with cross-language integration between C core and Python bindings.
2 Commits • 1 Features
Aug 1, 2025Performance summary for 2025-08: Delivered high-impact fixes and feature work in atcollab/at that improve simulation fidelity, stability, and API consistency. Focused on correcting a critical passive cavity voltage loop bug and enabling constant wake potentials for dipole kicks in wakefield simulations, with cross-language integration between C core and Python bindings.
August 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for atcollab/at: Delivered the Passive cavity voltage feedback feature, introducing a new cavity mode PASSIVE_SETVOLTAGE with update logic to automatically adjust cavity frequency to maintain a voltage setpoint. Implemented end-to-end changes across C and Python codebases to support this functionality, enabling tighter control over beam dynamics and reducing manual tuning.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for atcollab/at: Delivered the Passive cavity voltage feedback feature, introducing a new cavity mode PASSIVE_SETVOLTAGE with update logic to automatically adjust cavity frequency to maintain a voltage setpoint. Implemented end-to-end changes across C and Python codebases to support this functionality, enabling tighter control over beam dynamics and reducing manual tuning.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 performance summary for atcollab/at: Delivered substantial stability and accuracy improvements to the cavity feedback loop and beam-loading simulations. Implemented a buffering mechanism with historical windowing, refactored into a reusable shared library, and added new feedback control modes to enhance stability and performance. Resolved critical initialization and detuning issues for passive cavities by refining feedback loop calculations, introducing a feedback angle offset parameter, and ensuring correct mean buffer computation. These changes reduce simulation risk, improve reliability for experiments, and enhance maintainability through shared components.
2 Commits • 1 Features
Jun 1, 2025June 2025 performance summary for atcollab/at: Delivered substantial stability and accuracy improvements to the cavity feedback loop and beam-loading simulations. Implemented a buffering mechanism with historical windowing, refactored into a reusable shared library, and added new feedback control modes to enhance stability and performance. Resolved critical initialization and detuning issues for passive cavities by refining feedback loop calculations, introducing a feedback angle offset parameter, and ensuring correct mean buffer computation. These changes reduce simulation risk, improve reliability for experiments, and enhance maintainability through shared components.
June 2025
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 (atcollab/at): Focused reliability and capability improvements. Delivered a critical bug fix for atmexall error rethrow to ensure compilation failures are reported accurately, and introduced RF cavity detuning capability for beam loading simulations, including a detuning angle parameter, MATLAB build fixes, and robust handling of edge cases in initial beam loading parameters. These changes improve fault visibility, simulation flexibility, and overall robustness, enabling faster iteration and more realistic beam dynamics studies.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 (atcollab/at): Focused reliability and capability improvements. Delivered a critical bug fix for atmexall error rethrow to ensure compilation failures are reported accurately, and introduced RF cavity detuning capability for beam loading simulations, including a detuning angle parameter, MATLAB build fixes, and robust handling of edge cases in initial beam loading parameters. These changes improve fault visibility, simulation flexibility, and overall robustness, enabling faster iteration and more realistic beam dynamics studies.
March 2025
2 Commits • 2 Features
Mar 1, 2025For 2025-03, delivered key readability and physics feature improvements in repository atcollab/at, with cross-language impact (C, Python, MATLAB) and strengthened test coverage. Focused on clarifying radiation modeling and enabling non-linear chromaticity calculations for DeltaQPass, while maintaining energy-loss accuracy and overall code health.
2 Commits • 2 Features
Mar 1, 2025For 2025-03, delivered key readability and physics feature improvements in repository atcollab/at, with cross-language impact (C, Python, MATLAB) and strengthened test coverage. Focused on clarifying radiation modeling and enabling non-linear chromaticity calculations for DeltaQPass, while maintaining energy-loss accuracy and overall code health.
March 2025
Activity
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Quality Metrics
Correctness83.8%
Maintainability83.0%
Architecture84.6%
Performance80.0%
AI Usage23.0%
Skills & Technologies
Programming Languages
CMATLABPython
Technical Skills
Accelerator PhysicsAccelerator physicsBug FixBug FixingC DevelopmentC ProgrammingC programmingCode RefactoringCode integrationControl SystemsData StructuresEmbedded SystemsError HandlingNumerical AnalysisNumerical Simulation
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