ATLAS Open Data aims to deliver High Energy Physics (HEP) real and simulated data that can be explored on the browser or computer. Take a look at the different collections below, follow the links to the dedicated documentation and explore the secrets of the smaller known blocks that composed of the universe.


Select the data you want to access and explore its specific resources


The 8 TeV samples The 13 TeV samples Custom samples
8TeV 13TeV custom
Learn more about the 2016 datasets Explore the 10x more data in 2020 datasets Dedicated samples for advance usage


Evolution of the ATLAS Open Data

from the 8 TeV release (2016) to the 13 TeV release (2020)

The evolution of the ATLAS Open Data and the tuple structure from the 8 TeV releasein 2016 (samples and DOI @CERN Open Data) to the 13 TeV release (samples and DOI @CERN Open Data)are depicted below:

More Data

After a review of the usage of the 8 TeV dataset around the world (2018), ATLAS decided to make public 10 times more data with centre-of-mass energy at 13 TeV (2020).

Multiple interactions show that educators and students want to design and perform more complex tasks and physics. To match the request, ATLAS also increase the number and type of simulated data, so-called signals and backgrounds that allow to study common Standard Model and also Beyond Standard Model


More Information

But, more data is no the only improvement: more information is also part of the updates. ATLAS Open Data designs a richer dataset adding new particles (photons), objects (e.g. Large-R jets) and variables that allow to replicate searches for New Physics, systematic variations and the re-discovery of the Higgs boson in other decays modes



This dataset is provided by the ATLAS Collaboration only for educational purposes and is not suited for scientific publications.

  • The ATLAS Open Data are released under the Creative Commons CC0 waiver.
  • Neither ATLAS nor CERN endorses any works produced using these data, which is intended only for educational use.
  • All data sets will have a unique DOI that you are requested to cite in any (non-scientific) applications or publications.
  • Despite being processed, the high-level primary datasets remain complex, and selection criteria need to be applied in order to analyse them, requiring some understanding of particle physics and detector functioning.
  • The large majority of the data cannot be viewed in simple data tables for spreadsheet-based analyses.