Mechanical Engineer for CMS Tracker integration (EP-CMX-DA-2023-132-LD)

Job content

Introduction

Are you a highly-motivated Mechanical Engineer, interested in the construction of the CMS Tracking system for the High-Luminosity phase of the LHC? Are you interested in joining an international team of physicists, engineers and technicians to work on one of the flagship systems for the CMS experiment at the LHC?

You will join the CERN Experimental Physics Department (EP) to work in the CMS Experiment Systems Group (CMX) Detector Applications (DA) section.

The CMS Experiment is one of the four large experiments of the LHC at CERN. Members of the EP-CMX-DA section work closely with other CERN CMS team members, and with teams from many external institutes, to design and realise advanced detectors for the next phase of LHC operation: the High-Luminosity LHC (HL-LHC). You will join the CERN CMS Tracker team to participate in the integration of the new Tracker detector. Tracker sub-structures with silicon modules will be received and tested at CERN, and then integrated in larger assemblies, which will be validated with final powering and readout hardware, and two-phase CO2 cooling. The assembled Tracker will then be transported to the experimental site, lowered in the CMS cavern, inserted in the CMS detector and connected to the services. Engineering support is required throughout all of these phases.

Functions

As Mechanical Engineer in charge of the Tracker integration you will:

• oversee and contribute to the integration of the Tracker detector on the CERN Meyrin site. In particular, you will be responsible for the construction and quality control of the detector’s cooling distribution, which must operate flawlessly with high-pressure two-phase CO2, and you will oversee the cooling tests during the detector integration.
• be in charge of the interfaces between the Tracker and the rest of the CMS detector, including supporting mechanical elements, tooling, thermal interfaces and service channels. You will be responsible for the engineering design of the interfaces, their validation with mock-ups, and the fabrication and quality control of the final structures.
• be responsible for the removal of the existing Tracker and installation of the new Tracker in the CMS experimental cavern, defining and validating the removal and installation procedures in liaison with the CMS Technical Coordination team.
• coordinate the work of CERN personnel, collaborate closely with different Tracker groups and with the CMS Technical Coordination team
• facilitate the integration of colleagues from collaborating institutes who will join the Tracker integration effort at CERN
• supervise CERN graduates and students.
  
  

Master’s degree or PhD or equivalent relevant experience in the field of mechanical engineering or a related field.

Experience:

• Proven experience in construction and assembly of mechanical systems. Experience with high-pressure fluid systems would be an advantage.
• Demonstrated experience in preparation and management of complex 3D models of large CAD assemblies. Experience with CATIA V5 would be an advantage.
• Proven experience in preparation of manufacturing drawings, according to ISO standards.
• Proven experience in structural analysis, including finite-element methods and analytical calculations. Experience with ANSYS would be an advantage.
• Initial experience in working in multi-disciplinary teams, including activities in workshops and assembly sites.

Technical competencies:

• Design and analysis of mechanical structures.
• Knowledge and application of numerical modelling in solid mechanics.
• Production of 2D drawings and 3D models.
• Manufacturing of mechanical parts.

Behavioural competencies:

• Achieving results: having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind.
• Working in teams: building and maintaining constructive and effective work relationships.
• Demonstrating flexibility: adapting quickly and resourcefully to shifting priorities and requirements.
• Solving problems: producing workable and timely solutions that meet requirements.
• Managing self: working well autonomously; taking on activities and tasks without prompting.

Language skills:

• English: ability to understand and speak the language in professional contexts, draw-up technical specifications and/or scientific reports and make oral presentations.
• French: basic knowledge would be an asset or willingness to acquire it rapidly.
  
  

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 05.11.2023

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.
• Residence in the immediate vicinity of the Organization’s installations.
• Interventions in underground installations.
• A valid driving licence.
• Work during nights, Sundays and official holidays, when required by the needs of the Organization.
• Shift work, when required by the needs of the Organization.

Job grade: 6-7

Job reference: EP-CMX-DA-2023-132-LD

Benchmark Job Title: Mechanical Engineer