Applied Physicist

Job Posting Organization:
CERN, the European Organization for Nuclear Research, is a leading scientific research institution established in 195

• It is headquartered in Geneva, Switzerland, and is known for its groundbreaking work in particle physics. CERN employs over 2,500 staff members and collaborates with thousands of scientists from around the world, representing more than 100 nationalities. The organization operates in multiple countries and is dedicated to pushing the frontiers of science and technology, fostering an environment of innovation and collaboration.

Job Overview:
The Applied Physicist position at CERN involves performing Monte Carlo radiation transport studies specifically for the FCC-ee technical insertions. The role requires quantifying radiation exposure of equipment installed in the FCC-ee tunnel and conducting energy deposition studies for various FCC-ee accelerator systems, including the collider and booster dump systems. The successful candidate will engage in particle-matter interaction studies using the FLUKA Monte Carlo code, implement geometry models for FCC-ee machine studies, and assess expected radiation levels due to regular beam losses and synchrotron radiation emission. Additionally, the role includes participating in the conceptual design of FCC-ee protection devices such as absorbers and collimators, and collaborating closely with beam physicists and mechanical engineers to translate these concepts into technical specifications. This position is ideal for individuals who thrive in a multidisciplinary and international team environment, as collaboration is key to the success of the projects undertaken at CERN.

Duties and Responsibilities:

• Conduct particle-matter interaction studies using the FLUKA Monte Carlo code.
• Implement geometry models for FCC-ee machine studies.
• Assess expected radiation levels due to regular beam losses and synchrotron radiation emission in FCC-ee technical insertions.
• Perform energy deposition studies for accidental beam losses in FCC-ee.
• Actively participate in the conceptual design of FCC-ee protection devices, including absorbers and collimators.
• Collaborate closely with beam physicists and mechanical engineers to translate absorber and dump concepts into technical specifications.
• Engage in scientific computing and data analysis related to radiation transport simulations.
• Maintain a problem-solving mindset and adapt to new tools and methodologies as required.
• Work effectively within a diverse team, contributing to a collaborative and innovative work environment.

Required Qualifications:
Candidates must possess knowledge of particle-matter interactions and experience with Monte Carlo radiation transport simulations. Proficiency in scientific computing is essential, and knowledge of accelerator physics is considered an advantage. The ability to collaborate effectively in a multidisciplinary and international team environment is crucial. Basic programming skills in languages such as Python or C++ for data analysis and code development are required. Familiarity with numerical methods and scientific computing is also necessary, along with a strong problem-solving mindset and the ability to learn new tools quickly. Excellent team-working skills are essential, as the role involves working with colleagues from various fields of applied physics and engineering.

Educational Background:
Candidates must be nationals of a CERN Member or Associate Member State and possess a professional background in Applied Physics or a related field. A Master's degree with 2 to 6 years of post-graduation professional experience is required, or alternatively, a PhD with no more than 3 years of post-graduation professional experience. It is important to note that candidates must not have previously held a CERN fellow or graduate contract.

Experience:
The position requires candidates to have either a Master's degree with 2 to 6 years of relevant professional experience or a PhD with up to 3 years of post-graduation experience. This level of experience is necessary to ensure that candidates are well-equipped to handle the complex tasks associated with Monte Carlo radiation transport studies and the design of FCC-ee accelerator systems.

Languages:
Fluency in spoken and written English is mandatory, as it is the working language at CERN. Candidates are also expected to have a commitment to learning French, which is beneficial for integration into the local community and workplace.

Additional Notes:
The contract duration for this position is 24 months, with the possibility of extension up to a maximum of 36 months. The working hours are set at 40 hours per week, and the position is fully onsite. The target start date for the role is 01-March-202

• The job reference for this position is SY-STI-BMI-2025-253-GRAP. The compensation includes a monthly stipend ranging from 6287 to 6911 Swiss Francs, which is tax-free, along with 30 days of paid leave per year and additional benefits such as comprehensive health insurance, family allowances, and a relocation package depending on individual circumstances. On-the-job and formal training, including language classes, will also be provided.