Applied Physicist for Superconducting RF

Employment Type: Full-time As an Applied Physicist, you'll join the Superconducting RF Cavity Technology (SRF) Section of the Radio Frequency (RF) Group within the Accelerator Systems (SY) Department. This section is responsible for the design, maintenance, and upgrading of superconducting RF cavity systems in CERN accelerators. You will join a small team engaged in the research and development of superconducting RF materials with the aim to improve the performance of superconducting thin films deposited on copper for SRF applications. This is particularly important for the design and development for the Future Circular Collider (FCC). Your responsibilities Conducting RF measurements at cryogenics temperatures of 1.3 GHz single cell cavities. Conducting RF measurements of flat samples with a quadrupole resonator. Developing diagnostics tools for thermal and magnetic mapping. Data analysis. Correlation analysis for coating parameters and standard DC superconducting quantities. Your profile Experience with RF measurements and data analysis. Experience with laboratory work (cleanroom experience would be an advantage). Experience with Python and Python-based data analysis. Hands-on experience with cryogenics systems would be an asset. Skills Deep know-how of classical electrodynamics and RF measurement techniques; Experience with a finite element electromagnetic simulation software; Knowledge of RF superconductivity theory would be an advantage; Spoken and written English or French, with a commitment to learn the basics of the other language. Eligibility criteria You are a national of a CERN Member or Associate Member State. You have a professional background in Applied Physics, Electronics Engineering (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. Additional Information Job closing date: 15.01.2026 at 23:59 CET.Contract duration: 24 months, with a possible extension up to 36 months maximum. Working hours: 40 hours per week Job flexibility: Fully Onsite Target start date: 01-March-2026 This position involves: Work in Radiation Areas. A valid driving licence. Exposure to electromagnetic fields under certain exposure conditions. Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed. Job reference: SY-RF-SRF-2025-263-GRAP Field of work: Applied Physics Benchmark job: 200140 - Applied Physicist Global Benefits A monthly stipend between 6287-6911 Swiss Francs per month (tax free) 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 PARTMore information about us, here: careers.cern #J-18808-Ljbffr