September 2025 performance summary focused on delivering modular, high-fidelity ProtoDUNE-era simulations and reconstruction improvements, with a clear emphasis on business value through simulation accuracy, data quality, and workflow efficiency. Key design choices enabled by this month’s work include segmented photon simulation for ProtoDUNE-HD, harmonized simulation configurations, controlled data verbosity for production-grade outputs, and integrated CTB/Beams processing paths that streamline data keep-up workflows. On the DUNE simulators, improvements to the PDHD beam generation and configuration enhance flexibility for cosmic-ray event generation and data handling in non-standard storage environments.

Summary for 2025-08: Stabilized signal processing and advanced reconstruction through targeted fixes and feature enablement across three DUNE repos. Key deliverables include: (1) Jsonnet formatting bug fix that unblocked the dunereco signal processing pipeline; (2) PDVD beam reconstruction support with PDVD-specific config and BeamEvent updates; (3) SpaceCharge service enablement in dunecore for accurate detector simulation and reconstruction. These changes reduce pipeline failures, improve reconstruction accuracy, and strengthen physics modeling, demonstrated through cross-repo configuration and module updates.

July 2025 performance highlights: Delivered timing accuracy improvements and a major geometry overhaul across DUNE repos, while advancing data processing through standardized resampling for PDHD/PDVD. The work enhances data quality, simulation fidelity, and maintainability, directly supporting higher confidence physics analyses and efficient operations.

June 2025 monthly summary focusing on delivering high-value features, improving simulation fidelity, and strengthening maintainability across DUNE software stacks.

April 2025 (2025-04) monthly summary for DUNE/dunesim: focused on robustness of beam monitor data processing and extending simulation capabilities to support upcoming physics runs. Key work included initializing beam monitor basis vectors in ProtoDUNETriggeredBeamUtils to ensure correct data handling, and adding 1GeV H4 input configuration for the PDHD detector simulation with build/setup support to enable cosmic ray events and various radioactive decays. There were no reported critical bugs fixed this month. These efforts improve data quality, reproducibility, and simulation readiness, enabling more reliable analyses and faster test cycles.

January 2025 performance focused on enhancing DUNE simulation configurability, robust input handling, and data integrity across reef configurations. Key contributions include delivering configurable FHiCL-based run/subrun handling for dunesim, extending PDSP H4Input configurations for cosmic simulations, and ensuring correct beam service selection and data preservation. The work improves reproducibility, reduces manual configuration, and enables ProtoDUNE-ready cosmic and beam simulations while maintaining compatibility across multiple detector setups.

2024-11 Monthly Summary: Delivered two cross-repo changes focused on performance, safety, and maintainability across DUNE/duneprototypes and DUNE/dunesim. In duneprototypes, introduced the LLT Data Skipping Feature controlled by a feature flag (fSkipLLT, default false) to bypass LLT data during processing when not required, reducing processing time and resource use for non-LLT workflows. In dunesim, tightened code safety by enforcing immutability in core OpenFile logic (made first_pos and last_pos const in H4BeamFileService_service.cc), improving clarity and reducing risk of unintended mutations. These efforts establish a safer, more scalable foundation for future data-processing improvements and align with best practices in feature flag design and immutable state.