SRF Clean room technician (SY-RF-SRF-2022-57-LD)

  • Geneva, Switzerland
  • Contract

Company Description

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Find out more on

Job Description


Are you an enthusiastic mechanical technician looking to acquire experience in a clean room environment, working on cutting edge superconducting RF problems? Take Part!

You will join the Accelerator Systems Department (SY), which is responsible for the beam-related technical systems of the CERN accelerators. The SY teams design, build and operate equipment systems in all CERN accelerators, and are engaged in ambitious forward-looking R&D programmes. You will be working within the Radio Frequency Group, in the SRF Section.

As a SRF clean room technician, you will be part of a small team working on superconducting RF devices with the aim of assembling, maintaining and testing high-performance superconducting radio-frequency components and infrastructure for CERN’s accelerators, including present and future projects.


4As a SRF clean room technician, you will:

  • Be in charge of the preparation in clean room conditions of superconducting RF devices (cavities, ancillaries, and cryomodules) for cold tests and acceleration operation.
  • Support scientific staff for the design and realisation of special tooling and test setups.
  • Assemble and test superconducting RF accelerating structures for CERN accelerators: LHC, HIE ISOLDE, HL-LHC.
  • Prepare components for clean room assemblies of SRF devices, according to ISO standards.
  • Be in charge of the realization of technical drawings with CAD, for small clean room tooling, and for cold test setups.
  • Verify the qualification and acceptance of mechanical parts for the SRF Section.
  • Produce quality control procedures and documentation of test results.


Technical certificate or general secondary education or equivalent relevant experience in the field of mechanics or a related field.


  • Proven experience in the field of the assembly and preparation of superconducting RF cavities for particle accelerators.
  • Experience with CAD design tools such as AUTOCAD or CATIA.
  • Demonstrated experience with UHV technology and clean room work.

Technical competencies:

  • Knowledge and application of clean-room techniques.
  • Assembly of mechanical structures and equipment.
  • Knowledge and application of sealing techniques.
  • Knowledge and use of standard vacuum components and piping.
  • Production of 2D drawings and 3D models.

Behavioural competencies:

  • Achieving results: having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind.
  • Demonstrating accountability: working conscientiously and reliably; delivering on promises.
  • Demonstrating flexibility: adapting quickly and resourcefully to shifting priorities and requirements.
  • Working in teams: working well in groups and readily fitting into a team; participating fully and taking an active role in team activities.

Language skills:

  • Spoken and written English or French: ability to understand and speak the other language in routine situations.

Additional Information

Eligibility and closing date:

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States.

This vacancy will be filled as soon as possible, and applications should normally reach us no later than 12:00 CET 15th June 2022. 

Employment Conditions

Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

These functions require:

  • Work in Radiation Areas.
  • Interventions in underground installations.
  • A valid driving licence.
  • Work during nights, Sundays and official holidays, when required by the needs of the Organization.

Job grade: 3-4

Job reference: SY-RF-SRF-2022-57-LD

Benchmark Job Title: Mechanical Technician

Privacy Policy