CERN Accelerating science


The mandate of the CV group concerns the design, installation, operation and maintenance of the cooling systems, pumping stations, air conditioning plants and fluid distribution systems for the PS, SPS and LHC including their experimental areas and special cooling systems of LHC sub-detectors. It also provides service to the Computer Centre and some miscellaneous installations.

The LHC and Injector sections perform maintenance works to enhance the reliability of the CV installations. To do so, the GEM section improves continuously maintenance strategies and, in particular, it renews the maintenance plans at equipment level, it completes the documentation and create M&O oriented dossiers including detailed working procedures that allow the subcontracting of M&O work to external contractors. The M&O work is based on a CMMS tool in order to improve the operations.

A dedicated design section (Bureau d'Etudes) is in charge of the creation and updating of technical drawings. The project section (PJ) is in charge of the management and completion of projects for new installations upgrade or consolidation of existing ones. The group performs also studies for future accelerators after the LHC as well as CFD simulations of fluid dynamics and heat transfer problems. The CV group also has the responsibility for the M&O of the LHC Experiments specific cooling equipment and the development of future prototypes and their production.


The control section (CL) is in charge of the design, development, commissioning and support of control systems for CV plants.


Acronym Section Name Section Leader


Renaud Barillere


The CV-CL section is in charge of the control systems for the CV plants. The section also provides support to the CV group GMAO and software activities and to the project leaders for process related questions. The CV plants are controlled by industrial control systems. The software is either developed by contractors or in collaboration with other CERN services or by the section members. The section is responsible for the control systems requirements and for the control architecture definitions. The section handles the tests and commissioning phases. Once the control systems are put in operation, the section provides their operators with the required support and maintains these control systems and their computing infrastructure. The group GMAO relies on data stored in CERN central databases, the section provides support to users of these CV data. The section develops and maintains tools which implement solutions to ease the queries, the production of reports and the population of CV GMAO data. The section also support software packages used for vibrations analysis and chillers operation. In the early phases of the projects, the section can provide support to project leaders to review the process design to verify that the regulations requirements can be meet.


Design Office

Yannic Body


The Design Office section is in charge of the creation of drawings, 3D models, bills of material,…for the different projects and works within the EN-CV group. It is providing support to the EN-CV sections during the different phases of the projects such as carrying out integration studies, participating to the drafting of the tender documents, validating contractors drawings, verifying and archiving of the as-built documentation.
The DO section provides an interface with the users outside the EN-CV group for what concerns the provision of 3D models related to the EN-CV activities and plants.


GMAO Electricité Magasin

Guillermo Peon


The mandate of the GEM section covers three core activity areas (Support to CMMS (GMAO), Electricity and Stores (Magasin)) in the CV group, in charge of the cooling and ventilation installations of the accelerators and experimental areas. The section is responsible for the compilation of the installations’ documentation, for the support to the computerised maintenance management system (CMMS) of the group, and for writing and implementing in the CMMS the preventive maintenance procedures. With respect to the electrical systems for the CV equipment, in the pre-design phase, the section performs all actions needed to develop the main structure and to determine the main dimensions for new installations. During the design, construction and commissioning phases, the section verifies the detailed design and its implementation in the plant until final approval is granted. Furthermore the section provides support to the group with respect to already installed electrical systems. Finally, the section is in charge of the group’s stores, which implies the arrangement and classification of the spare parts not only in the physical stores but also in the CMMS, the control of the minimum stock and of the inventory of all the stored parts, and the request for offers and order of spare parts to numerous providers.



Serge Deleval


Page under construction



Olivier Crespo-Lopez


Page under construction


Projects and CFD

Michele Battistin


The Project Section is in charge of cooling and ventilation large projects for LS1 and consolidation of the CV installations. The section members manage the supply and installation contract with the support of the draftsman and work supervisor of the DOW section, the control expert of the CL section and the installation supervisior of the OP section of the group. The CFD (link is external) team is part of the section. This team develop study on ventilation, heat transfer, smoke behaviour, gas propagation and radioation protection studies for the group and for all the overall of CERN services.