Power System Physicist/Engineer for the CMS HGCAL

About the role

As a Power System Physicist/Engineer for the CMS High‑Granularity Calorimeter (HGCAL) you will be responsible for the development, integration, testing and commissioning of the detector’s power systems. You will work in a multinational, multidisciplinary team to ensure reliable low‑voltage and medium‑voltage supplies for the read‑out electronics and sensor biasing.

Key responsibilities

• Follow procurement of low‑voltage and bias power supplies, conduct acceptance and stress tests on delivered units.
• Support commissioning of power systems during mass‑assembly and testing phases.
• Evaluate HGCAL performance in relation to its power systems and develop mitigation strategies for noise, interference and ripple.
• Oversee installation, cable routing, connectorisation and in‑situ testing of power systems in the underground Service and Experimental caverns.
• Integrate power supplies with CMS safety, control and monitoring systems.

Required profile

• Master’s degree, PhD or equivalent experience in Applied Physics, Electrical Engineering or a related field.
• Proven experience testing, operating and debugging power systems for complex devices such as particle detectors.
• Experience with silicon‑ or scintillator‑based detectors and large‑scale electronic procurement is an advantage.
• Ability to work effectively in multinational, multicultural teams.

Required skills

• Design, construction and installation of low‑voltage high‑current and medium‑voltage (up to 800 V) power supplies.
• Implementation of DC‑DC converters, voltage regulation and cabling for detector modules.
• Specification, testing and validation of power electronic components and detector hardware.

What we offer

• Competitive tax‑free salary, increasing with experience.
• 30 days paid leave per year plus a two‑week annual closure.
• Comprehensive health insurance, pension scheme and family allowances.
• Relocation package, installation grant and travel expenses.
• Limited‑duration contract (4 years) with possibility to extend up to 8 years and eligibility for an indefinite position.