ATLAS Offline software

Welcome to ATLAS offline software!

To find out how to build Athena, make merge requests etc, please have a look at the release building pages.

In particular, if you fork this project please do not forget to add the ATLAS Robot as a developer (assuming you might want to submit a merge request) as documented here.

For ATLAS members, please see the Atlas Computing Twiki for even more information.

Branches

The following branches are currently active:

Branch	Purpose	Main Project, Release Series
21.0	Tier0 and MC16c	Athena, 21.0.X
21.0-mc16a	MC16a bugfixes	Athena, 21.0.20.Y
21.0-mc16d	MC16d bugfixes	Athena, 21.0.20.Y
21.0-TrigMC	MC production with new trigger developments	Athena, 21.5.X
21.1	HLT and P1 monitoring	AthenaP1, 21.1.X
21.2	Derivations and Analysis	AthDerivations + (Ath)AnalysisBase, 21.2.X
21.3	MC18 Simulation	Athena + AthSimulation, 21.3.X
21.6	Event Generation	AthGenerators, 21.6.X
21.9	Upgrade Phase-2 developments	Athena + AthSimulation, 21.9.X
master	AthenaMT development	Athena, 22.0.X

Links

• The ATLAS webpage will tell you all about the ATLAS experiment (for ATLAS members, the collaboration webpage is here)
• The Twiki is the main source of documentation, and has many links to sub-domains
• The software documentation page has some tutorials etc
• The git repository is here
• And the Doxygen code documentation can be found here