SY Mandate
The CERN Accelerator Systems (SY) Department is responsible for designing, constructing, operating, and decommissioning accelerator systems in the areas of Normal and Superconducting Radio Frequency systems, Beam Instrumentation, Beam Intercepting Devices, Beam Injection, Extraction and Transfer, and Power Conversion. It maintains world-class expertise and state-of-the-art knowledge in the associated specialized technological fields such as radio-frequency engineering, acceleration techniques, electromagnetic and photonic sensor technology, beam-matter interaction, pulsed magnet technology, and precise current generation and measurement. The SY Department carries out pioneering research and development in these areas, in full collaboration with European partners and international collaborators, to ensure the continuous improvement of the CERN accelerator systems, and to address the needs of future upgrades and projects. The SY Department is fully committed to the safety, environmental sustainability, and long-term viability of its activities, and to training and developing the next generation of physicists, engineers and technicians in its domains of expertise.
Systems (SY) Department Mission Statement (2026–2030)
As the SY Department, our mission over the next five years is to deliver efficient beam- related technical systems for CERN’s accelerators to ensure the successful upgrade of the LHC and lay the foundations of longer-term collider options.
- Steering programmes in executing the projects approved for LS3, with particular focus on HL-LHC, within time and budget. Ensure a functional planning of LS3 activities, supported by accurate risk and safety analysis.
- Kickstarting operations in providing support for the smooth restart of the injector
complex and of the LHC after the shutdown.
- Propelling flagship initiatives through contributing to Future Collider studies, in
particular to the FCC-ee pre-TDR phase, and be ready to adapt to the decisions of the European Strategy for Particle Physics Upgrade (ESPPU)
- Building Partnerships in steering the projects hosted in the SY Department,
ensuring close collaboration with the other Departments.
- Shaping the future with a vision for Technology R&D on the activities under the
responsibility of the SY Department to prepare the future of CERN.