Trigger

These pages provide practical information about working with the ATLAS trigger framework.

If you are new to working on the ATLAS trigger, you may find the Trigger Primer page a very useful place to start.

If you want to write selection algorithms, or simply learn how to run and debug the trigger software, you may want to look at the Trigger Developer Guide section.

Details about the trigger menu organization can be found in the Trigger Menu for Experts section.

If you are an analyzer interested in accessing trigger information for your analysis, you may want to look at the Trigger Analysis Tools section.

Finally, the Trigger Infrastructure and Tools section provides general information about the ATLAS Trigger infrastructure and describes some useful tools for working with the Trigger system.