Applied Physicist for ATLAS Trigger Reconstruction (EP-ADT-TR-2025-201-GRAP)

The goal of this project is to introduce innovative selections into the ATLAS trigger system to improve the identification of events in difficult regions of the parameter space, including rare Standard Model processes and exotic signatures. In collaboration with NextGen doctoral students, the selected candidate will contribute to the development of the trigger menu for the HL-LHC era.

Your responsibilities:

• Design new triggering algorithms and strategies, including ML/AI-based approaches.
• Identify final states insufficiently covered by the existing trigger configuration.
• Develop tools to support HL-LHC trigger menu studies.
• Simulate trigger selections and estimate trigger rates using data and HL-LHC Monte Carlo samples.
• Ensure proposed solutions meet trigger menu constraints on processing resources and rate limits.
• Collaborate closely with ATLAS trigger and TDAQ upgrade experts.

Your profile

• Experience in AI/ML and with trigger systems.
• Experience with FPGAs and digital electronics.
• Strong background in collider physics.

Skills:

• Strong software skills.
• Excellent communication and presentation skills.
• Experience or willingness to supervise students.
• Spoken and written English, with a commitment to learn French.

Eligibility criteria:

• You are a national of a CERN Member or Associate Member State.
• You have a professional background in physics (or a related field) and have either:
  • a Master's degree with 2 to 6 years of post-graduation professional experience;
  • or a PhD with no more than 3 years of post-graduation professional experience.
• You have never had a CERN fellow or graduate contract before.