Radiation Protection Physicist

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

• It is located 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 and engineers from around the world. The organization operates in multiple countries, with member states spanning across Europe and beyond. CERN's mission is to push the frontiers of science and technology, fostering an environment of innovation and collaboration among diverse professionals.

Job Overview:
As a Radiation Protection Physicist at CERN, you will be an integral part of the Occupational Health & Safety and Environmental Protection (HSE) Unit, specifically within the Accelerators & Sites (AS) section of the HSE Radiation Protection (RP) Group. Your role will involve working on the radiation protection aspects related to the operation and upgrades of the Large Hadron Collider (LHC) during the Long Shutdown 3 (LS3) period, which is scheduled from 2026 to 202

• This position is crucial as it involves conducting radiation protection assessments to ensure the safety of personnel and the environment, adhering to the ALARA (As Low As Reasonably Achievable) principles. You will engage in various radiation protection studies, utilizing the FLUKA Monte Carlo particle transport code to analyze and model the radiation environment of the LHC. Your work will contribute to the upgrades necessary for the accelerator complex to support future high-luminosity operations, making it a vital role in the ongoing advancement of particle physics research.

Duties and Responsibilities:
Your primary responsibilities will include performing radiation protection studies using the FLUKA Monte Carlo particle transport code, focusing on existing models of the LHC machine complex. You will estimate residual radiation levels during interventions and compute the activation of different beam line components, particularly in the collimation insertion regions, using tools such as ActiWiz. Additionally, you will conduct radiation protection studies for the upgrades of the SND and FASER experiments. Validation of Monte Carlo simulation results will be a key part of your role, requiring you to utilize existing data analysis scripts and radiation measurements. Regular reporting to your supervisor will be expected, along with the production of detailed reports and technical notes. You will also have the opportunity to present your findings in project meetings and at scientific conferences, contributing to the broader scientific community.

Required Qualifications:
To be eligible for this position, you must possess a basic knowledge of radiation physics and radiation protection principles. Experience or strong knowledge of Monte Carlo simulation codes for radiation transport, particularly with FLUKA, is highly desirable. Proficiency in a programming language, ideally Python, will be considered an asset. You should demonstrate the ability to work effectively within multidisciplinary teams, showcasing strong interpersonal and communication skills. Proficiency in spoken and written English or French is required, with a commitment to learning the other language if necessary.

Educational Background:
Candidates must hold a Bachelor's or Master's degree in Physics, Energy/Nuclear Engineering, or a related field. It is essential that applicants have graduated within the last two years and have not previously held a CERN fellow or graduate contract. Those without a university degree or with a PhD are not eligible for this position.

Experience:
The position requires a maximum of two years of professional experience since graduation. This experience should be relevant to the field of radiation protection or related areas, ensuring that candidates are well-prepared to undertake the responsibilities of the role.

Languages:
Fluency in spoken and written English or French is mandatory. Candidates should be committed to learning the other language to enhance communication within the diverse team at CERN.

Additional Notes:
This position is fully onsite and involves working in radiation areas and interventions in underground installations. A valid driving license is required. The contract duration 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. The target start date for this position is May 1, 202

• Compensation includes a monthly stipend ranging from 5,266 to 5,793 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.