Vacuum Systems Engineer — LHC Upgrade (Onsite, Training)

CERN - The European Research Center of Particle Physics; Denmark; On-site; DKK 468,000 - 515,000; Full time

Benefits offered by this job

Monthly stipend CHF 5266–5793

30 days leave + 2 weeks annual closure

Health insurance (CERN scheme)

Pension Fund membership

Relocation package

Contract extension up to 36 months

On-the-job and language training

Job summary

CERN is seeking a Mechanical Engineer to contribute to the upgrade of critical beam vacuum systems for the LHC. You will join the Vacuum, Surfaces and Coatings (VSC) Group and assist in installation, testing and commissioning of key equipment for the LHC upgrade programme, with full training provided in a unique international environment.

Your role involves testing, documentation, collaboration with suppliers, and on-site work in radiation areas, with a 24-month contract and potential extension.

Qualifications

• Experience with helium leak detection methods.
• Experience with on-site vacuum system work, including mechanical installation and in-situ testing.
• Basic experience with outgassing phenomena in vacuum systems and with quadruple mass spectrometers (RGA) for residual gas analysis in UHV environments.
• Practical familiarity with techniques for achieving and maintaining UHV conditions.

Responsibilities

• Perform vacuum acceptance testing of baked components intended for installation in the HL-LHC collimator upgrade.
• Test and validate vacuum equipment before installation, perform residual gas analysis (RGA) ensuring it meets performance and quality requirements.
• Carry out leak tests, bake-out system installation and non-evaporable-getter (NEG) activation on vacuum components and assemblies.
• Assemble and prepare mechanical and vacuum systems for installation and operation.
• Support the installation, testing and commissioning of equipment for the LHC upgrade programme.
• Prepare technical documentation, test reports and intervention records.
• Coordinate with suppliers and support the procurement and delivery of technical components.
• Participate in maintenance, upgrade and repair activities on equipment installed in the LHC tunnel.

Skills

Helium leak testing

On-site vacuum work

UHV knowledge

RGA analysis

Documentation

English/French

Education

Bachelor's degree

Master's degree

Tools

Residual Gas Analyzer (RGA)

Leak detector use

Job description

CERN is seeking a Mechanical Engineer to contribute to the upgrade of critical beam vacuum systems for the LHC. You will join the Vacuum, Surfaces and Coatings (VSC) Group and assist in installation, testing and commissioning of key equipment for the LHC upgrade programme, with full training provided in a unique international environment.

Your role involves testing, documentation, collaboration with suppliers, and on-site work in radiation areas, with a 24-month contract and potential extension.