Accelerator Physicist (BE-ABP-LNO-2026-138-GRAP)

You will contribute to a proposal covering the layout, optics design, performance optimisation and evaluation of a potential future collider at CERN, the Linear Collider Facility @ 380 GeV (LCF380). Your responsibilities Work on various design aspects of LCF380. Perform beam dynamics simulations to demonstrate its performance. Investigate the interaction regions (optics design, layout, for a possible dual beam delivery system) and the damping rings to optimise performance. Contribute to writing the summary design report. Your profile Knowledge and understanding of lepton beam dynamics and optics design, including synchrotron radiation. Knowledge and experience in the setup, analysis and interpretation of particle tracking studies. Analysis of experimental data. Skills Accelerator physics codes like MAD, Xsuite, ELEGANT, pyAT, GuineaPig, etc. Running simulations on an HPC. Good presentation skills. 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. Job closing date: 09.09.2026 at 23:59 CEST. Contract duration: 24 months, with a possible extension up to 36 months maximum. Working hours: 40 hours per week Job flexibility: Hybrid Target start date: 01-November-2026 Job reference: BE-ABP-LNO-2026-138-GRAP Field of work: Applied Physics Benchmark job: 200140 - Applied Physicist Global Benefits A monthly net stipend of either 6372 or 7004 Swiss Francs per month depending on your degree. 30 days of paid leave per year plus 2 weeks annual closure. Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund. Family, child and infant monthly allowances depending on your individual circumstances. A relocation package (installation grant and travel expenses) depending on your individual circumstances. Possibility to extend your contract up to 36 months. On-the-job and formal training including language classes. Overview of CERN - Discover a world where the impossible is made possible! At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive. Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success. If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART! More information about us, here: careers.cern