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What you'll do You will develop algorithms, FPGA firmware, and data acquisition systems for CMS online luminosity measurement, beam monitoring, and Tracker calibration for the High Luminosity LHC, and coordinate such developments. This involves Integrating and commissioning back-end systems for luminosity and tracking detectors, enabling real-time data processing and precision luminosity measurements. Your responsibilities - Develop, deploy, and maintain firmware and real-time algorithms for back-end electronics across multiple CMS board platforms, including systems for the Fast Beam Conditions Monitor (FBCM), Inner and Outer Tracker online luminosity, to support luminosity measurement, beam monitoring, and lumi-trigger generation. - Validate front-end detectors (including FBCM and Tracker modules) and back-end electronics through laboratory testing, ensuring end-to-end system performance from detector to data output. - Execute detector functional tests during detector integration at the Tracker Integration Facility, ensuring system readiness prior to installation. - Organise and lead test campaigns, including preparatory activities, on-site coordination of participants, and systematic validation of hardware, firmware, software and detector response. - Lead studies of detector efficiency, calibration quality, and operational stability, through measurements and simulations. - Coordinate technical interfaces across detector, trigger, timing, and data acquisition domains to ensure system integration. - Supervise and mentor students and fellows, including recruitment and structured technical guidance. - Anticipate upcoming technical and operational needs, structuring workflows, preparing infrastructure, and engaging with collaborating institutes to ensure continuity of operations. Your profile - Hands-on experience with detector laboratories, electronics prototyping, and test beam operations. - Strong experience in FPGA firmware development (VHDL or similar HDL) and real-time data processing, ideally in particle physics detectors. - Demonstrated ability to integrate and troubleshoot complex systems spanning firmware, software, and detector hardware, from the detector frontend through to the data output. - Experience with data analysis, detector efficiency and calibration studies, and the statistical methods relevant to performance evaluation. - Experience in supervising or mentoring students or junior colleagues, including selecting candidates and adapting guidance to individual strengths. - PhD or equivalent relevant experience in the field of Physics or a related field. You are asked to provide at least one reference letter as part of your application. Your skills - Simulation, design and development of trigger, data acquisition chains: including FPGA-based electronics. - Simulation, design and development of (parts of) detectors. - Testing and validation of detector, accelerator and beam line components. - Analysis and optimisation of detector performance: through the interpretation of simulation and experimental data. - Solid understanding of electronics. - Strong organisational and planning skills, with the ability to anticipate needs, coordinate across teams, and lead activities under time pressure. - Effective communicator across multidisciplinary teams, able to maintain constructive working relationships and coordinate technical interfaces with diverse contributors. - Has a structured and organised approach towards work; is able to set priorities and plan tasks with results in mind. - Contributes to promoting a positive atmosphere in the team through an optimistic and constructive attitude; addresses issues. - Sets ambitious, challenging but realistic goals; is ready to take initiatives and calculated risks in the interest of CERN. - Makes timely decisions that balance systematic analysis with decisiveness; deals with difficulties in a timely manner. - Spoken and written English, with a commitment to learn French. Medical hazard 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. Employment conditions - A valid driving licence. - Work in Radiation Areas. - Interventions in underground installations. - Work during nights, Sundays and official holidays, when required by the needs of the Organization. Ideal start date: 01/10/2026 Contract duration (in months): 48 Grade range: 6 Benchmark job: 200140 - Applied Physicist
What you'll do: As a member of the CMS Safety Office, you will participate in all safety-related activities at the CMS experimental sites during the Long Shutdown 3, when both the detector and the infrastructure will undergo major upgrades. In particular, you will take a leading role in the technical review of all CMS fire extinguishing systems and safety monitoring systems to assess their design, coverage and suitability for the CMS upgrade. You will contribute to the review, testing, and commissioning of the CMS Alarm Action Matrix in collaboration with all the relevant stakeholders, as well as organise regular reviews of the systems and activities and guide risk assessments for the collaboration's teams. Your responsibilities: - Coordinate and supervise the installation, integration, and commissioning of safety-related infrastructure for CMS across its underground experimental and surface facilities on the French and Swiss sites. - Organise and follow up on the assembly, deployment, and commissioning of the CMS environmental monitoring system based on sniffers. - Lead the technical review, consolidation, maintenance, and follow-up of the CMS fire protection systems. Contribute to the definition, review, testing, and validation of safety system logic, in particular the CMS Alarm Action Matrix. - Interface with CMS Technical Coordination, subdetector teams, and safety link persons to ensure coherent implementation of safety requirements and proper integration of systems across multiple domains. - Support the preparation and follow-up of safety-related deliverables, including environmental monitoring systems and alarm management, ensuring traceability and consistency throughout the project lifecycle. - Participate in and guide activity reviews and related risk assessments within CMS. - Proactively contribute to the continuous improvements to the safety framework at the CMS experimental site, ensuring a safe working environment while streamlining safety processes and documentation to support the efficient execution of experimental activities. Still here? Let's make a quick check about: Your profile: - Experience with fire protection systems or environmental monitoring systems. - Extensive experience in the installation, integration, and commissioning of safety-related technical systems, preferably in a complex or multidisciplinary environment. - Experience in field-supervision, including installation follow-up, testing, and commissioning of complex systems. - Track record in activity safety supervision, risk assessment, and coordination of multiple stakeholders. Initial experience working with control and/or safety systems (e.g. monitoring systems, alarms, interlocks, or similar). - Knowledge of safety regulations and standards in an international environment. - Proven ability to work successfully within multinational and multicultural teams of scientists, engineers and technicians. - Master's degree or equivalent relevant experience in the field of Mechanical Engineering, Health, Safety and Environment Engineering or a related field. Certificates in Safety Management (e.g. Nebosh) would be an advantage. Your skills: - Safety conformity assessment. - Occupational safety and risk management. - Knowledge of design codes and compliance verification of mechanical equipment. - Maintenance management. - Process analysis, definition and improvement. - Operation and support of experimental facilities. - Drives work / projects along and sees them through to their conclusion. - Contributes to promoting a positive atmosphere in the team through an optimistic and constructive attitude; addresses issues. - Takes initiative beyond regular tasks and makes things happen. - Adapts quickly and resourcefully to shifting priorities and requirements. - Ensures that information, procedures and decisions are appropriately documented. - Spoken and written both English and French. Medical hazard: 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. Employment conditions: - A valid driving licence. - Work during nights, Sundays and official holidays, when required by the needs of the Organization. - Interventions in underground installations. - Work in Radiation Areas.
Ideal start date: 01/10/2026 Contract duration (in months): 48 Grade range: 6 Benchmark job: 200090 - Mechanical Engineer Job flexibility: Fully Onsite Team supervision What you'll do: You will play a key role in the design, prototyping, construction, and integration of the mechanical structures and services for the innermost region of the CMS detector at CERN. This includes beam-pipe support structures, tracker bulkheads, beam-luminosity and beam-background monitors, and their associated services. The work will culminate in the equipment installation and commissioning at the end of the Long Shutdown 3 of the LHC. Your responsibilities: - Prepare 3D models and technical drawings and perform thermo-mechanical analyses of complex mechanical components and assemblies. - Contribute to component procurement and oversee fabrication of mechanical parts, including related quality assurance. - Lead and supervise the assembly of mock-ups, prototypes, and final versions of support structures for the CMS innermost region. - Assist with the integration and testing of the Inner Tracker and Luminosity Monitors at CERN. - Support and supervise colleagues from collaborating institutes participating in integration activities at CERN. Your profile: - Proven experience in design of complex mechanical components and assemblies using 3D CAD tools. - Experience with structural and thermal simulations using finite-element analysis. - Experience in construction, assembly, and quality control of mechanical systems. - Demonstrated ability to work effectively within a multidisciplinary team, establishing and maintaining constructive and effective working relationships with a diverse range of colleagues. - Master's Degree or equivalent relevant experience in the field of Mechanical Engineering or a related field. Your skills: - Design and analysis of mechanical structures. - Production of 2D drawings and 3D models. - Knowledge and application of numerical modelling in solid mechanics. - Manufacturing of mechanical parts. - Builds and maintains constructive and effective work relationships. - Shares knowledge and expertise freely and willingly with others; coaches others to ensure knowledge transfer. - Creates a common mind-set and promotes team spirit. - Spoken and written English, with a commitment to learn French. Employment conditions: - A valid driving licence. - Shift work, when required by the needs of the Organization. - Work in Radiation Areas. - Interventions in underground installations. - Work during nights, Sundays and official holidays, when required by the needs of the Organization. For full job description and application process please visit the following website: https://careers.cern/jobs/mechanical-engineer-cms-innermost-region/
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