Speaker
Description
ATLAS has made significant new advances and releases of Open Data in support of a wide variety of community interests and efforts. For the first time, 1 PB of event generator output was released, including 13B events in 6400 datasets, allowing the community to profit from the efforts and resources of the collaboration. This release complements existing data and MC simulation released for research use in 2024. The Outreach and Education Open Data were transformed in 2025: an entirely new release features (public) ntuple-making infrastructure and notebook examples demonstrating everything from fundamental HEP concepts to complex analyses. The overhaul has simplified the user experience: with a few clicks, anyone can make a plot from the Open Data. Newly developed web-based applications are accessible to a wide range of audiences, including non-English speakers. To support the use of these datasets, ATLAS has developed significant supporting infrastructure and documentation, including the atlasopenmagic package, a one-stop shop for metadata, dataset searches, and file identification. The infrastructure includes monitoring of documentation and file accesses to complement existing user surveys. This contribution introduces the new features of the ATLAS Open Data, along with the outcomes from the latest Open Data tutorial and the new monitoring.
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