Radiation Protection Physicist

Job Posting Organization:
CERN, the European Organisation for Nuclear Research, is a leading scientific research organization established to probe the fundamental structure of the universe. It employs physicists and engineers who utilize the world's largest and most complex scientific instruments to study the basic constituents of matter. CERN's mission is to advance knowledge and understanding of the universe through groundbreaking research and innovation. The organization operates in multiple countries and employs a diverse workforce, fostering an environment of collaboration and inclusion. CERN has been a pioneer in scientific research since its inception, and its commitment to diversity has been integral to its success.

Job Overview:
The position of Radiation Protection Physicist within CERN's CMS team involves providing critical support on radiation protection matters. The role requires taking charge of simulations to evaluate operational scenarios of the detectors and defining necessary shielding. The successful candidate will participate in long shutdown activities as a key member of the field radiation protection team, offering direction and support to various teams involved in the process. This position is pivotal in ensuring the safety and efficiency of operations during shutdowns, contributing to feasibility studies, and collaborating with Health, Safety, and Environment (HSE) teams on activation-scenario simulations. The role also includes disseminating simulation results and maintaining the CMS nominal FLUKA model, which is essential for radiation protection planning and optimization.

Duties and Responsibilities:
The duties and responsibilities of the Radiation Protection Physicist include supporting the CMS Technical coordination-team" style="border-bottom: 1px dotted #007bff !important;">Coordination Team in operational matters related to radiation protection during shutdowns. The physicist will contribute to feasibility studies and simulations for shielding options and upgrade planning. They will perform simulations of prompt radiation throughout detectors and caverns, collaborate with HSE-Radio Protection on activation-scenario simulations, and disseminate radiation-simulation results across CMS. Additionally, the physicist will respond to simulation and analysis requests from CMS subsystems, prioritize tasks according to Technical Coordination needs, and maintain and update the CMS nominal FLUKA model. Participation in radiation and activation measurements in the CMS cavern is also required to benchmark the FLUKA module effectively.

Required Qualifications:
Candidates must possess a Master's degree or equivalent relevant experience in Physics, Engineering, or a related field. A radiation protection qualification from a certified body is considered a plus. The ideal candidate will have knowledge of radiation protection, operational dosimetry, and safety planning, along with demonstrated experience in Monte Carlo radiation-transport simulations using FLUKA. Familiarity with radiation measurements and benchmarking is also essential. Technical competencies required include knowledge and application of ionizing radiation, simulation of radiation environments, and instrumentation and measurement techniques. A solid understanding of radiation safety and personal dosimetry is crucial for this role.

Educational Background:
The educational background required for this position includes a Master's degree in Physics, Engineering, or a related field. Candidates with equivalent relevant experience may also be considered. Additional qualifications in radiation protection from a recognized body would enhance a candidate's profile.

Experience:
The position requires candidates to have substantial experience in the field of radiation protection, operational dosimetry, and safety planning. Demonstrated experience in Monte Carlo radiation-transport simulations using FLUKA is essential, along with practical experience in radiation measurements and benchmarking. Candidates should have a proven track record of working in environments where radiation safety is a priority, showcasing their ability to manage and mitigate risks effectively.

Languages:
Fluency in spoken and written English is mandatory for this position, as it is the primary language of communication at CERN. Additionally, candidates should demonstrate a commitment to learning French, which is beneficial for integration into the workplace and community.

Additional Notes:
This position is offered as a limited duration contract for 5 years, with the possibility of applying for an indefinite position subject to certain conditions. The working hours are set at 40 hours per week, and the job is fully onsite, requiring work in radiation areas and interventions in underground installations. Candidates must possess a valid driving license and may be required to participate in stand-by duty, shift work, and work during nights, Sundays, and official holidays as needed. Due to the occupational health risks associated with this position, selected candidates must obtain medical clearance before a contract offer is confirmed. The job grade is classified as 6-7, and the reference for this position is EP-CMX-SCI-2025-258-LD. CERN offers a competitive salary that is tax-free and increases with relevant experience, along with 30 days of paid leave per year, comprehensive health insurance, family allowances, and a relocation package depending on individual circumstances.