Accelerator Physicist; SY-ABT-BTP--LD

• Contract

At CERN , the European Organisation for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature.

Introduction

You will engage in the design and specification of beam transfer systems across CERN’s accelerator complex,following the systemsfrominitialconcepttobeam commissioning and operational deployment. An intrinsic part of your work will be to carry out the R&D needed to understand the performance of existingbeam transfersystems and to propose improvements or upgradesneededtomeet the future needs of CERN’s ambitiousresearch programme.

Functions

• Design and specify beam transfer systems (injection, extraction, primary beamlines/transfer lines) in collaboration with internal and external partners, including drafting technical and functional requirements.
• Develop and perform beam dynamics simulations including advanced ML/AI-based models to analyse, predict, and optimise system behaviour and performance.
• Conduct R&D to improve system performance and reliability, including planning and coordinating machine development studies tovalidatenew concepts.
• Commission beam transfer systems with particle beams, diagnose operational issues, and propose solutions tomaintainor enhance performance.
• Communicate results through peer-reviewed publications, conference contributions, and clear presentations tailored to both technical and non-technical audiences.
• Supervise students and coordinate postdoctoral research contributions to beam transfer studies and R&D activities.

Master's degree or PhD or equivalent relevant experience in the field of Physics, Applied Physics or a related field.

Experience:

• Experience in accelerator physics, including beam dynamics and modelling with simulation tools.
• Practical experience at accelerator facilities with machine development studies, beamcommissioningand operational support.
• Ability to analyse complex technical problems, evaluate system performance, and develop data-driven solutions.
• Demonstratedexpertisein developing robust software for simulation, data analysis, and/or automation with the application of Machine Learning, AI, and/or advanced optimisation techniques.
• Knowledge and application of accelerator physics theory;
• Knowledge and application of beam injection and extraction methods, beam transfer and dumping;
• Simulation, design and development of primary and secondary beam lines;
• Analysis and optimisation of accelerator performance, including application of machine learning and AI concepts;
• Knowledge of/ identification andselectionof relevant emerging accelerator technologies.
• Demonstrating Accountability: taking responsibility for own actions and decisions.
• Managing Self: remaining objective, focused and productive in a stressful environment; focusing on solutions rather than problems.
• Demonstrating Flexibility: being willing to work on different projects simultaneously.
• Learning and Sharing Knowledge: sharing knowledge and expertise freely and willingly with others; coaching others to ensure knowledge transfer.
• Communicating Effectively: delivering presentations in a structured and clear way; adjusting style and content to the audience; responding calmly and confidently to questions.

Spoken and written English, with a commitment to learn French.

Eligibility and closing date:

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organisation. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States .

This vacancy will be filled as soon as possible, and applications should normally reach us no later than 18.01.2026 at 23:59 CET
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Employment Conditions

Contract type:
Limited duration contract (5 years). Subject to certain…