CERN Accelerating science


The group is responsible for all beamlines, the infrastructure and the management of CERN’s fixed target experimental areas, as well as for irradiation and beam test facilities (East Hall, North Area, the Antiproton Decelerator experimental area, AWAKE and HiRadMat). It furthermore supports the LHC experiments and facilitates the interface with the Accelerator and Technology Sector. It participates in and partly hosts the management of a number of CERN-wide projects (East Area Renovation, CERN LHC Hostlab Project, AWAKE, HL-LHC WP8, etc.).

The group designs, installs, commissions and maintains all secondary beam lines, experimental areas and test facilities, ensures their beam-readiness and takes care of related upgrades.

It provides engineering, technical and coordination support to CERN-wide projects, especially those linked to secondary beamlines and experimental areas, as well as to the interface between the LHC and the experiments, including forward detectors.

In this context and partly as a CERN-wide support, the group is responsible for the operation and maintenance of the gas networks, vacuum systems for secondary beam lines, manages the contract of multi-directional scaffoldings, delivers cabling installations, connector assemblies and rack mountings, provides related mechanical support, and manages corresponding on-site workshops.

Furthermore, the group ensures regular radiation monitoring studies for the LHC and its injector chain, as well as related research and development activities. It takes care of the operation and coordination of the HiRadMat facility, leads and coordinates the AWAKE project, being responsible for all CERN-related calculations and studies, as well as first possible realization studies.

Careful planning being the key, the group manages the coordination between all experiments, users, operators, equipment and service groups, schedules all activities, and ensures that safety aspect are duly taken into account.


EN-EA-CT Section

Section Leader: Mats Wilhelmsson


Mechanical support, vacuum systems, instrumentation requirements, gas systems, cabling, industrial service contracts, etc.

The CT section is in charge of construction- and operation support for the areas in which the EA group has an overall site- and operation responsibility. Upon request, it provides CERN-wide support in its field of competence to groups and users, with particular priority towards physics experiments and experimental areas.  

Competencies and trade-experiences in the section are in brief:

Mechanical works including machining, welding, assembly and fine mechanics well suited for secondary beam lines, corresponding detector test installations and physics experiments;

Gas system operation and maintenance; especially oriented fixed gas supply systems for the experimental areas (including LHC) and user support in the fixed target and test beam areas;

Cabling, on-site and in workshops, fabrication of tailored cables/harnesses with connectors and fittings suited for experiments and detectors. This includes associated mechanical installations, supports, crates/racks and containment;

Multi-directional scaffolding for complex site- and underground installation works;

Vacuum system construction, operation and maintenance in particular for secondary beam lines;

Resources available (in addition to staff members):

  • industrial service contracts providing on-trade competencies in the form of result- and quality oriented contracts (scaffolding) and field support units (FSUs) (cabling, crates/rack and connector related activities, distribution and mechanical beam line works, as well as safety support)
  • on-site workshops well adapted to our technical needs


EN-EA-EC Section

Section Leader: Sebastien Evrard


Design and engineering support, integration studies, consolidation, Secondary Beams and Experimental Areas super-intendents, technical coordination and planning, etc.

The Engineering & Coordination (EC) section provides engineering and coordination support for CERN's Secondary Beams & Experimental Areas (LHC Experimental Areas, EAST HALL, NORTH AREA, AD, AWAKE, nTOF beams line and HiRadMat) as well as for projects (HL-LHC, AWAKE Consolidation, etc.) and studies (FCC, CLIC, etc.).

In particular, the section is responsible for:

  • Planning and coordinating of installation, maintenance, shutdown and repair activities for Secondary Beam Lines and Experimental Areas;
  • Providing design & engineering support for new projects in the Secondary Beams Lines & Experimental Areas during their preparation, integration, installation, operation and dismantling phases;
  • Providing TSO’s for Secondary Beam Lines & Experimental Areas and the associated buildings;
  • The EC section also provides engineering support for LHC equipment under EA responsibility, for projects (HL-LHC, AWAKE, Consolidation, ) and studies (FCC, CLIC, etc.).


EN-EA-LE Section

Section Leader: Lau Gatignon


Beamline design & commissioning, user and operation support, test facilities, project support, associated committees, etc.

The LE section is responsible for the design of the secondary beams downstream the primary targets and of the corresponding experimental areas, as well as of irradiation or test facilities in the CERN accelerator complex and the liaison with all related users.

In particular this includes:

  • Design, commissioning and upgrade of secondary beam lines, experimental areas and test facilities. Follow its installation, maintenance and consolidation and ensure beam readiness
  • Ensure the coordination between experiments, users, operators, equipment and service groups
  • Provide support to and host projects linked to secondary beam lines, experimental areas and the interface between beam and detectors.
  • Coordination of the above activities and covering safety aspects.

Today the section covers:

  • The East and North Experimental Areas exploitation
  • The low-energy beams for the EHN1 extension
  • Physics Beyond Collider related studies
  • Chair the EATM and representing EAs in various meetings, such as IEFC, FOM, PS/SPS User meetings, SPSC, etcetera 
  • Coordination of the CLIC Machine Detector Interface


Dosimetry/Facility/Consolidation Study Support Team

MCWG Chair & NA Consolidation Study Leader: Yacine Kadi


Monitoring and Calculation Working Group (MCWG), HiRadMat Facility, Optical Fibre dosimetry project, North Area consolidation study

The team is responsible for ensuring regular radiation monitoring studies for the LHC and its injector chain, coordinated through the Monitoring and Calculation Working Group (MCWG). Directly linked to the MCWG, the team is also responsible for the optical fibre dosimetry study and implementation project. It further ensures the operation and coordination of the HiRadMat facility, and leads the North Area consolidation study.

In particular this includes:

  • chairing and organizing “Monitoring and Calculation Working Group” (MCWG)
  • providing regular operational radiation reports to the sector and liaising to the R2E project and all concerned equipment/service groups;
  • performing Optical Fibre Dosimetry (OFD) studies and the corresponding implementation to accelerators and experimental areas;
  • ensuring the HiRadMat facility operation and coordination, as well as performing and organizing related upgrade studies;
  • performing a consolidation study for the North Area in view of LS2, Run-3 and beyond LS3 requirements.


AWAKE Project Support and Plasma Based Acceleration Study Team

AWAKE Project Leader: Edda Gschwendtner


Leadership of the AWAKE project, proton driven plasma wakefield acceleration, related calculation and modelling studies as well as coordination of studies possible for mid/long-term applications

The team leads and coordinates the CERN AWAKE project and is responsible for all CERN related calculations and studies, as well as fist possible realization studies.

In particular this includes:

  • leading the CERN AWAKE project towards and during Run 2;
  • coordinating and organizing the general proton driven plasma wakefield acceleration studies at CERN;
  • coordinating resources associated with the AWAKE project and with the proton driven plasma wakefield studies, tests and realization;
  • organizing and coordinating the studies and possible realization for first applications of proton driven plasma wakefield acceleration technology.


CERN LHC Hostlab Project

Project Leader: Fabio Formenti

In view of the long-term operation and substantial upgrades of the LHC experiments, a project proposal was prepared in the context of the LETEM (“LHC Experiments Technical and Engineering Meeting”) which summarizes identified host-lab support requirements and corresponding missing resources in order to guarantee the timely implementation of the upgrades as well as effective operation. This project has been approved for the period of 2018 to 2022.


Leadership of the CHL project, ensuring CERN support required for the long-term operation and substantial upgrades of the four main LHC experiments

In particular this includes:

  • regularly follow-up the advancement of CHLP funded activities and report to the LETEM;
  • management of the expenditures in direct contact with the technical coordinators and in agreement with the EP/EN DPOs and within the agreed activities as described above;
  • a bi-annual review of expenditures in preparation of the annual MTP exercise and to estimate CHLP phase-II requirements for LS3;
  • the preparation, analysis and drafting of a CHLP phase-II proposal covering the period until LS3 by the end of 2020.