• Help
    Discussion forum
    Search tips
  • About
    CERN Open Data
    ALICE
    ATLAS
    CMS
    DELPHI
    LHCb
    OPERA
    TOTEM
    Glossary

DAOD_HION14 format 2015 Pb-Pb Open Data for Research from the ATLAS experiment

ATLAS collaboration

Cite as: ATLAS collaboration (2024). DAOD_HION14 format 2015 Pb-Pb Open Data for Research from the ATLAS experiment. CERN Open Data Portal. DOI:10.7483/OPENDATA.ATLAS.IKCT.HH2K

Dataset Simulated Collision Heavy-Ion Physics Heavy-ion physics ATLAS 5TeV PbPb CERN-LHC


Description

2015 Pb-Pb Open Data for Research from the ATLAS experiment

Related datasets

Run 2 2015 Pb-Pb collision data

ATLAS DAOD_HION14 format Run 2 2015 Pb-Pb collision data

Run 2 2015 Pb-Pb MC simulation

ATLAS DAOD_HION14 format Run 2 2015 Pb-Pb MC simulation

Dataset characteristics

221050858 events. 1921 files. 4.0 TiB in total.

How were these data generated?

These data were created during LS2 as part of a major reprocessing campaign of the Run 2 data. All data were reprocessed using Athena Release 21, and new corresponding MC simulation samples were produced. These data and MC simulation datasets were processed into DAOD_HION14 format files; this is a light-weight data format intended for analysis of heavy ion minimum bias data, sufficient to support a wide variety of ATLAS analyses.

How can you use these data?

The data and MC simulation provided by the ATLAS experiment in DAOD_HION14 format is released under a CC0 license; citation of the data and acknowledgement of the collaboration is requested. This format can be used directly like a ROOT ntuple (or using uproot) for simple studies or processed into secondary ntuples with systematic uncertainties included using the ATLAS AnalysisBase software.

Extensive instructions for interacting with the data, as well as documentation of the dataset naming conventions and their contents, are provided on the ATLAS Open Data website linked below. Designing and implementing a research-quality data analysis is a complex process that requires an understanding of particle physics; for those new to the subject, the open data designed for education (also linked below) might be a good starting point. Please be sure to cite the Open Data that you use, in line with the policy below.

ATLAS Open Data Website

Resources to understand and use the open data for research

ATLAS Analysis Software Tutorial

More about the DAOD_HION14 data format

Citation policy


      

Files and indexes

Disclaimer

These open data are released under the Creative Commons Zero v1.0 Universal license.

Logo CC0-1.0

Neither the experiment(s) ( ATLAS ) nor CERN endorse any works, scientific or otherwise, produced using these data.

This release has a unique DOI that you are requested to cite in any applications or publications.

ALICE experiment
ATLAS experiment
CMS experiment
DELPHI experiment
LHCb experiment
OPERA experiment
PHENIX experiment
TOTEM experiment
© CERN, 2014–2025 ·
Terms of Use ·
Privacy Policy ·
Help ·
GitHub ·
Twitter ·
Email
Powered by Invenio
Open Data Portal v0.4.3
CERN