Geneva, Switzerland What you'll do
Dense tracking environments in experiments at CERN’s High-Luminosity LHC and future FCC experiments require increased use of timing information in addition to the position measurements provided by pixel detectors. This adds an extra dimension to the available information and is essential for mitigating pile-up effects at high luminosities. The CASSIA Project (CMOS Active SenSor with Internal Amplification) aims to develop monolithic active pixel sensors (MAPS) with internal signal gain and low noise in a widely used CMOS imaging process, targeting a broad range of applications.
Your responsibilities
- Assemble and test CASSIA sensor prototypes on PCBs.
- Support and improve signal measurements in laboratory measurements, irradiations and test beams.
- Analyse CASSIA2 for optimal signal collection and time resolution.
- Investigate radiation hardness and the change of gain as a function of irradiation.
- Test CASSIA2 on chip amplifier circuits against circuit simulation, characterise the front-end (FE) circuit performance for time resolution and signal-to-noise ratio (SNR).
- Improve the design of CASSIA2 circuits for optimal time resolution in LGAD and SPAD mode.
- Develop concepts for integration of CASSIA pixel designs into asynchronous readout pixel circuits in matrices (CASSIA3 studies).
- Circuit design and implementation, design verification, pre-/post-layout simulations for optimised pixel designs and FE-circuits for large matrices.
- Collaborate closely with engineers, physicists, and technicians in a multidisciplinary team.
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Your profile
- Experience with the assembly, testing, and characterisation of silicon detector modules or similar systems.
- Practical experience with laboratory instrumentation such as probe stations, laser test setups, beam test setups.
- Ability to design PCBs for ASICs/sensors as part of the test system.
- Ability to perform electronic measurements to characterise analogue and digital on-chip circuits.
- Experience in automating laboratory procedures and data acquisition.
- Experience with tools used for the design, integration and verification of ASICs/CMOS sensors.
- Familiarity with data analysis, circuit simulation and electronics debugging.
- Experience working in large, international research collaborations and contributing to common infrastructure or shared facilities.
- Demonstrated ability to plan, prioritise and deliver results under tight schedules.
- Your studies focused on Electronics or Physics.
Your skills
- Knowledge of monolithic CMOS sensors, MAPS, silicon pixel detectors for high energy physics experiments.
- Experience in testing silicon sensors and required laboratory equipment.
- Experience in circuit simulation and characterisation.
- Working experience in ASIC and/or CMOS sensor design and using industry tools for design, implementation, and verification.
- Organised, accurate and independent approach to work.
- Ability to work effectively in multidisciplinary teams and international collaborations.
- Spoken and written English, with a commitment to learn French.
Employment conditions
- Work in Radiation Areas.
- Work during nights, Sundays and official holidays, when required by the needs of the Organization.
Global Benefits at CERN
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. Currently, we cannot consider applications from Pakistani and Lithuanian nationals for positions with a 2026 start date, as the ceiling defined under Article II.5 of the Associate Membership Agreement has been reached.
- By the application deadline, you have a master’s degree with 2 to 6 years of professional experience since graduation or a PhD with a maximum of 3 years of professional experience since graduation. You are not eligible with only a bachelor’s degree.
- You have never had a CERN fellow or graduate contract before.
- 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)
- A copy of your most relevant diploma or a certificate of achievement from your school (if you don't yet have your paper diploma)
- Any document you consider relevant to your application
Your CERNDepartment
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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