Applied Physicist – LHCb Calorimeter Upgrade

What you'll do

As an applied physicist, you will be part of the LHCb electromagnetic calorimeter (ECAL) upgrade project. This includes the optimisation, construction, commissioning and operation of novel modules for the inner region based on Spaghetti Calorimeter (SpaCal) technology.

Your responsibilities

Take a leading role in the enhancement of the LHCb ECAL during Long Shutdown 3 (LS3) with new modules using SpaCal technology.
Develop and participate hands-on in quality assurance activities for the ECAL LS3 enhancement.
Optimise the signal shaping for the new SpaCal modules in collaboration with the electronics experts.
Organise the test beam effort, including the data analysis, within the LHCb ECAL upgrade project and coordinate the test beam activities within the LHCb collaboration.
Participate actively in the R&D on scintillating materials towards the LHCb PicoCal (LS4) and for future particle physics experiments.

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Your profile

Proven track record in the field of optical calorimetry for particle physics experiments.
Demonstrated experience in calorimeter detector tests, including data analysis from beam tests.
Experience in simulations and optimisation of calorimeter detector designs.
Demonstrated experience in characterisation of organic and inorganic scintillators.
Understanding of signal treatment for optical calorimetry.
Management and coordination of teams, including student supervision.
PhD or equivalent relevant experience in the field of Physics or a related field.

Your skills

Simulation, design and development of (parts of) detectors.
Analysis and optimisation of detector performance.
Knowledge and application of calorimetry methods and techniques.
Organisation, planning and control: including supervision of students.
Has a structured and organised approach towards work; is able to set priorities and plan tasks with results in mind.
Builds and maintains constructive and effective work relationships. Takes initiative beyond regular tasks and makes things happen.
Readily absorbs new techniques and working practices; proposes new or improved ways of working. Presents information accurately and objectively.
Spoken and written English, with a commitment to learn French.

Ideal start date: 01/05/2026

Contract duration: 60 month contract

Grade range: 6

Benchmark job: 200140 - Applied Physicist

Job flexibility: Hybrid

Team supervision

Medical hazard

Exposure to electromagnetic fields under certain exposure conditions.
Exposure to risk of falling from heights during scaffolding assembly and dismantling operations.
Exposure to lead.

Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Employment conditions

Shift work, when required by the needs of the Organization.
Participation in a regular stand-by duty, including nights, Sundays and official holidays.
Work in Radiation Areas.
Interventions in underground installations.

Global Benefits at CERN

A minimum entry-salary of 9236 Swiss Francs per month (tax free), increasing in line with your years of relevant experience.
30 days of paid leave per year plus 2 weeks annual closure.
Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
Family, child and infant monthly allowances depending on your individual circumstances.
A relocation package (installation grant, removal, travel expenses) depending on your individual circumstances.
Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

Let's get you ready

Be sure to meet the eligibility criteria

You are a national of a CERN Member State or Associate Member State.
You have relevant qualifications and professional experience.
If you have previously held a Staff contract at CERN, you will not be eligible for these positions.
Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

Your CV (English or French)
Any document you consider relevant to your application

Your CERNDepartment

The EP department conducts research in experimental particle physics and serves as a key reference center for the European physics community, contributing to the education and training of young scientists.

Overview of CERN

Discover a world where the impossible is made possible!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.

If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!

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Still have a doubt ? Here are the most frequently asked questions

What should I expect during my first week at CERN?

Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
How big would the team be?

The size of the team you'll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you'll have the opportunity to learn more about the team structure for the position you are applying for.
What is the working language at CERN?

The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
What support does CERN provide for relocation?

CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the “Salary, Benefits and Support“ page.
Do I need a visa to work at CERN?

Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
What would my salary be?

Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.