Talk - Organization of LS1 - consolidation, upgrade and maintenance

Presented at                            Asset and Maintenance Management Workshop, Nov.2013, CERN

Abstract                                    The LHC has been delivering data to the physics experiments since the first collisions in 2009. The first long shutdown (LS1), which started on 14 February 2013, was triggered by the need to consolidate the magnet interconnections to allow the LHC to operate at the design energy of 14 TeV in the centre-of-mass. Prior to the start of  this Long Shutdown (LS1), a major effort of preparation was performed in order to optimize the schedule and the use of resources across the different machines, with the aim of resuming LHC physics in early 2015,while the rest of the CERN complex will restart beam operation in the second half of 2014. This presentation summarizes the main activities, the main milestones, describes the organizational set-up for the coordination of the works, and will present the actual status.

Talk - Project Structure & Planning

Pilot course                              Managing and Coordinating projects in BE

Required maintenance and consolidation to run like that (injectors and LHC) until 2035?

Authors                  Baird S., Foraz K.

Presented at        RLIUP workshop 29-31 October 2013, Centre de Convention, Archamps


Abstract                    Assuming that Linac4 is connected to the PSB in LS2, we will outline the maintenance and basic consolidation works that will be needed to maintain design performance of the LHC and its Injector chain until 2035, with an overall reliability as good as that achieved in the first LHC operation period 2009 to 2013. Using these data we will estimate the shutdown schedule needed throughout this period to complete these maintenance and consolidation works. These estimates will also include the required radiation cool-down periods, time for system re-commissioning and testing as well as the time needed to restart the accelerator chain for LHC colliding beam operation. As some of the consolidation activities needed for the PS and SPS machines are related to the radiation dose taken by the machine equipment (e.g., irradiated cable replacement and magnet renovation) the variation of these time estimates as a function of beam losses in the Injector chain will also be covered.

The First Long Shutdown (LS1) for the LHC

Author(s)               Bordry, F (CERN) ; Baird, S (CERN) ; Foraz, K (CERN) ; Perrot, A L (CERN) ; Saban, R (CERN) ; Tock, J Ph (CERN)

Presented at        4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013

Reference:            CERN-ACC-2013-0084

Abstract                    The LHC has been delivering data to the physics experiments since the first collisions in 2009. The first long shutdown (LS1), which started on 14 February 2013, was triggered by the need to consolidate the magnet interconnections to allow the LHC to operate at the design energy of 14 TeV in the centre-of-mass. It has now become a major shutdown, which, in addition, includes other repairs, consolidation, upgrades and cabling across the whole accelerator complex and the associated experimental facilities. A detailed CERN-wide resource-loaded schedule was prepared aiming at resuming LHC physics in early 2015, while the rest of the CERN complex will gradually start up again in the second half of 2014.\nThe paper describes the preparation phase with the prioritisation of the activities, the building of the teams and the planning of the shutdown. Then, it gives an overview of the injector activities and the main projects in the LHC. The decision to restart at 6.5 TeV after the LS1 is recalled.

Summary of Session 5 and 6 "Long Shutdown 1"

Author(s)               Bordry, F (CERN) ; Foraz , K (CERN)

Presented at        Chamonix 2012 Workshop on LHC Performance, Chamonix, France, 6 - 10 Feb 2012, pp.21-24

Abstract                    This paper summarizes the sessions devoted to Long Shutdown 1 (LS1) in the LHC, injectors and experiments. The time frame and start date were discussed, with the main activities from powering tests prior to warm-up up to physics were presented. The session finished with a discussion on the maximum reasonable energy.



Talk - Integration of SMACC in the global LS1 schedule

Presented at                            Third LHC Splice Review, November 12-14

Reliability and Intervention Management for the LHC

Author(s)               Foraz, K (CERN) ; De Jonghe, J (CERN) ; Richard Cook, J (CERN) ; Coupard, J (CERN) ; Daudin, B (CERN) ; Baltasar Dos Santos Pedrosa, F (CERN) ; Reguero Fuentes, E (CERN) ; Garino, C (CERN) ; Golikov, K (CERN) ; Grillot, S (CERN)

Presented at        3rd International Particle Accelerator Conference 2012, New Orleans, LA, USA, 20 - 25 May 2012

Abstract                    Since 2010, CERN has entered a mode of continuous operation of the LHC and its injectors, which implies the continuous operation of all the infrastructure and support systems. High reliability of the machines is crucial to meet the physics goals. This high reliability must be accompanied by a fast restart after programmed stops. Since 2010, an important effort has been put in place, to ease the coordination process during the programmed stops and to reinforce the management of the interventions (preparation, approval, follow-up, traceability, closure). This paper describes the difficulties from the first year related to this coordination, and the impact on operation. The tools developed for the management of the interventions, their assets and the effect on the reliability of the LHC will also be presented and discussed.

Talk - LHC planning

Presented at                            2nd technical coordination workshop, 10-11 mai 2012, Villa du Lac - Divonne


Talk - Update planning LHC

Presented at                            LS1 day , 12 juin 2012, CERN

LS1 general planning and strategy for the LHC, LHC injectors

Author(s)               Foraz, K (CERN)

Presented at        Chamonix 2012 Workshop on LHC Performance, Chamonix, France, 6 - 10 Feb 2012

Abstract:                   The goal of Long Shutdown 1 (LS1) is to perform the full maintenance of equipment, and the necessary consolidation and upgrade activities in order to ensure reliable LHC operation at nominal performance from mid 2014. LS1 not only concerns LHC but also its injectors. To ensure resources will be available an analysis is in progress to detect conflict/overload and decide what is compulsary, what we can afford, and what can be postponed to LS2. The strategy, time key drivers, constraints, and draft schedule will be presented here.


Summary of Sessions 2 and 3 "Shutdown 2010"

Author(s)               Baird, S (CERN) ; Foraz, K (CERN)

Presented at        Chamonix 2011 Workshop on LHC Performance, Chamonix, France, 24 - 28 Jan 2011

Abstract                    This paper summarises the two sessions, which were devoted to the activities planned for the next long LHC shutdown, which was originally planned to start in December 2011. The aim of the session was two-fold. Firstly to collect a reasonable idea of the major activities planned for the shutdown and secondly to highlight the potential impacts of delaying the shutdown by one year to 2013.


Talk - CERN: Lessons learned from the Large Hadron Collider (LHC) installation mega project

Presented at                            PMI institute

First LHC Shutdown: Coordination and Schedule Issues

Author(s)               Coupard, J (CERN) ; Foraz, K (CERN) ; Grillot, S (CERN)

Presented at        1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.MOPEC004

Reference             CERN-ATS-2010-151

Abstract                    The first LHC shutdown started in fall 2008, just after the incident on the 19th of September 2008. In addition to the typical work of a shutdown, a large number of interventions, related to the “consolidation after the incident” were performed in the LHC loop. Moreover the amount of work increased during the shutdown, following the recommendations and conclusions of the different working groups in charge of the safety of the personnel and of the machine. This paper will give an overview of the work performed, the organization of the coordination, emphasizing the new safety risks (electrical and cryogenic), and how the interventions were implemented in order to ensure both the safety of personnel and a minimized time window.

LHC and injectors schedule for the next decade

Author(s)               Foraz, K (CERN) ; Myers, S (CERN)

Reference             CERN-ATS-2010-075

Abstract                  This document summarizes the schedule of the different machines during the next decade.


Talk - Accelerator Reliability Workshop - Cape Town, South Africa

Alternative scenarios for the current shutdown

Author(s)               Bätz, M (CERN) ; Foraz, K (CERN)

Presented at        Chamonix 2009 Workshop on LHC Performance, Chamonix, France, 2 - 6 Feb 2009, pp.133-136

Abstract                    Alternative options for the current shutdown will be presented. These options include warming up additional sectors to complete the consolidation activities. The potential impact of these revised schedules on the beam schedule in 2009, as well as the length and timing of the following shutdown will also be presented.

Improved anchoring of SSS with vacuum barrier to avoid displacement

Author(s)               Capatina, O (CERN) ; Foraz, K (CERN) ; Foreste, A (CERN) ; Parma, V (CERN) ; Renaglia, T (CERN) ; Quesnel, J (CERN)

Presented at        Chamonix 2009 Workshop on LHC Performance, Chamonix, France, 2 - 6 Feb 2009, pp.109-112

Abstract                    As presented in the previous speech, the incident in sector 3-4 of the LHC caused a high pressure build-up inside the cryostat insulation vacuum resulting in high longitudinal forces acting on the insulation vacuum barriers. This resulted in braking floor and floor fixations of the SSS with vacuum barrier. The strategy of improving anchoring of SSS with vacuum barrier to avoid displacement is presented and discussed.

Where are we with the current shutdown?

Author(s)               Coupard, J (CERN) ; Foraz, K (CERN)

Presented at        Chamonix 2009 Workshop on LHC Performance, Chamonix, France, 2 - 6 Feb 2009

Abstract                    The first shutdown of the LHC machine started on the 17th of November 2008. In addition to typical shut-down interventions and the works already foreseen (e.g. phase 1 collimator installation), some additional consolidation work is needed. On top of this comes the work caused by the 19 September incident and the subsequent tests carried out in November and December. This talk will give an overview of the activities currently planned and the key drivers for overall length of the shutdown, highlighting the critical points.


Talk – LHC, Méthode de gestion de projet du CERN et gestion des risques 

Presented at                club des DIS en Haute-Savoie le 11 septembre 2008 sur le thème "Gestion des risques des grands projets"

Conceptual Design of the LHC Interaction Region Upgrade : Phase-I

Author(s)               Ostojic, R (CERN) ; Williams, L (CERN) ; Baglin, V (CERN) ; Ballarino, A (CERN) ; Cerutti, F (CERN) ; Denz, R (CERN) ; Fartoukh, S (CERN) ; Fessia, P (CERN) ; Foraz, K (CERN) ; Fürstner, M (CERN)

Abstract                    The LHC is starting operation with beam. The primary goal of CERN and the LHC community is to ensure that the collider is operated efficiently and that it achieves nominal performance in the shortest term. Since several years the community has been discussing the directions for maximizing the physics reach of the LHC by upgrading the experiments, in particular ATLAS and CMS, the LHC machine and the CERN proton injector complex, in a phased approach. The first phase of the LHC interaction region upgrade was approved by Council in December 2007. This phase relies on the mature Nb-Ti superconducting magnet technology with the target of increasing the LHC luminosity to 2 to 3 10^34 cm^-2s^-1, while maximising the use of the existing infrastructure. In this report, we present the goals and the proposed conceptual solutions for the LHC IR Upgrade Phase-I which include the recommendations of the conceptual design review.

Coordination of the installation and of the commissioning of the machine

Authors:                 Foraz, K

Reference             CERN-TS-Note-2008-039 ; EDMS936664. - 2008.

Presented at        3rd TS Workshop Archamps, France, May 27 – May 29, 2008

Abstract                    The installation of the LHC machine is now finished, and the powering tests are on-going. Since the start of the civil engineering works in 1998, a lot of installation works and tests had been performed by different groups and departments, by different type and size of contracts, and with different technologies. During the last ten years, we had to face different hazards and delays, inherent to a large and complex project. This paper describes the methodology followed by the coordination team, and draw up a balance sheet of the works done so far.

Scheduling the Powering Tests

Authors                  Esther Barbero-Soto, Boris Bellesia, Maria-Paz Casas-Lino, Carlos Fernandez-Robles, Katy Foraz, Mirko Pojer, Roberto Saban, Rudiger Schmidt, Matteo Solfaroli-Camillocci, Antonio Vergara-Fernandez, CERN, Geneva, Switzerland

Reference             CERN-TS-2008-014

Presented at        11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008

Abstract                    The Large Hadron Collider is now entering in its final phase before receiving beam, and the activities at CERN between 2007 and 2008 have shifted from installation work to the commissioning of the technical systems ("hardware commissioning"). Due to the unprecedented complexity of this machine, all the systems are or will be tested as far as possible before the cool-down starts. Systems are firstly tested individually before being globally tested together. The architecture of LHC, which is partitioned into eight cryogenically and electrically independent sectors, allows the commissioning on a sector by sector basis. When a sector reaches nominal cryogenic conditions, commissioning of the magnet powering system to nominal current for all magnets can be performed. This paper briefly describes the different activities to be performed during the powering tests of the superconducting magnet system and presents the scheduling issues raised by co-activities as well as the management of resources.

Collimator Integration and Installation Example of One Object to be Installed in the LHC

Authors                     O. Aberle, R. Assmann, R. Chamizo, T. Weiler, S. Chemli, J-P. Corso, J. Coupard, F. Delsaux, K. Foraz, J M. Jimenez, Y. Kadi, K. Kershaw, M. Lazzaroni, R. Perret, C. Bertone, J-L. Grenard, CERN,

Presented at        EPAC08, Genoa, Italy WEPP009

Abstract                    The collimation system is a vital part of the LHC project, protecting the accelerator against unavoidable regular and irregular beam loss. About 80 collimators will be installed in the machine before the first run. Two insertion regions are dedicated to collimation and these regions will be among the most radioactive in the LHC. The space available in the collimation regions is very restricted, it was therefore important to ensure that the 3- D integration of these areas of the LHC tunnel would allow straightforward installation of collimators and alsoexchange of collimators under the remote handling constraints imposed by high radiation levels. The paper describes the 3-D integration studies and verifications of the collimation regions combining the restricted space available, the dimensions of the different types of collimators and the space needed for transport and handling. The paper explains how installation has been planned and carried out taking into account the handling. The collimation system is a vital part of the LHC project, protecting the accelerator against unavoidable regular and irregular beam loss.



Schedule evolution during the life-time of the LHC project

Authors                  Foraz, K; Barbero-Soto, E; Gaillard, H; Hauviller, Claude; Weisz, S

Reference             CERN-TS-2007-001.- Geneva : CERN, 2007

Presented at        Particle Accelerator Conference 07, Albuquerque (NM) USA June 25-29, 2007 Geneva, Switzerland June

Abstract                    The Large Hadron Collider Project was approved by the CERN Council in December 1994. The CERN management opted from the beginning of the project for a very aggressive installation planning based on a just-in-time sequencing of all activities. This paper aims to draw how different factors (technical development, procurement, logistics and organization) have impacted on the schedule evolution through the lifetime of the project. It describes the cause effect analysis of the major rescheduling that occurred during the installation of the LHC and presents some general conclusions potentially applicable in other projects.

Transport and installation of the LHC cryo-magnets

Authors                  Artoos, K; Bartolome-Jimenez, S; Capatina, O; Chevalley, JM; Foraz, K; Guinchard, M; Hauviller, Claude; Kershaw, K; Prodon, S; Rühl, Ingo et al.

Reference             CERN-TS-2007-004.- Geneva : CERN, 2007 

Presented at        Particle Accelerator Conference 07, Albuquerque (NM) USA June 25-29, 2007

Abstract                    Eleven years have passed between the beginning of transport and handling studies in 1996 and the completion of the LHC cryo-magnets installation in 2007. More than 1700 heavy, long and fragile cryo-magnets had to be transported and installed in the 27 km long LHC tunnel with very restricted available space. The size and complexity of the project involved challenges in the field of equipment design and manufacturing, maintenance, training and follow-up of operators and logistics. The paper presents the milestones, problems to be overcome and lessons learned during this project.



Planning and Logistics Issues raised by the Individual System Tests during the Installation of the LHC

Authors                  Weisz, S; Barbero-Soto, E; Foraz, K; Rodríguez-Mateos, F

Reference             CERN-TS-2006-008.- Geneva : CERN, 2006 - 4 p. 

Presented at        European Particle Accelerator Conference 06, Edinburgh UK - June 26-30, 2006

Abstract                    The running of individual system tests has to fit within tight constraints of the LHC installation planning and of CERN's accelerator activity in general. For instance, the short circuit tests of the power converters that are performed in-situ restrict the possibility to work in neighbouring areas; much in the same way, the cold tests of the cryogenic distribution line involve safety access restrictions that are not compatible with the transport and installation of cryo-magnets or interconnect activities in the sector considered. Still, these individual system tests correspond to milestones that are required to insure that we can continue with the installation of machine elements. This paper reviews the conditions required to perform the individual system tests and describe how the general LHC installation planning is organised to allocate periods for these tests.

Overview of the Large Hadron Collider cryo-magnets logistics

Authors                  Capatina, O; Artoos, K; Bihery, R; Brunero, P; Chevalley, JM; Dauvergne, LP; Feniet, T; Foraz, K; Francey, J; Grenard, JL et al.

Reference             CERN-TS-2006-005.- Geneva : CERN, 2006 - 4 p.   

Presented at        European Particle Accelerator Conference 06, Edinburgh UK - June 26-30, 20

Abstract                    More than 1700 superconducting cryo-magnets have to be installed in the Large Hadron Collider tunnel. The long, heavy and fragile LHC cryo-magnets are difficult to handle and transport in particular in the LEP tunnel environment originally designed for smaller, lighter LEP magnets. An installation rate of more than 20 cryo-magnets per week is needed to cope with the foreseen LHC installation end date. The paper gives an overview of the transport and installation sequence complexity, from the storage area at the surface to the cryo-magnet final position in the tunnel. The success of this task depends on a series of independent factors that have to be considered at the same time. The equipment needed for the transport and tunnel installation of the LHC cryo-magnets is briefly described. The manpower and equipment organisation as well as the challenges of logistics are then detailed. The paper includes conclusions and some of the lessons learned during the first phase of the LHC cryo-magnets installation.

Preparation of Sector Test-Planning

Authors                  Barbero-Soto, E; Foraz, K

Presented at        3rd LHC Project Workshop, Divonne-les-Bains, France, 23 - 26 Jan 2006



Underground logistics

Authors                  ForazK ; Prodon, S

Reference             CERN-TS-Note-2005-006 ; TS-Note-2005-006. - 2005.

Presented at         2nd TS Workshop Archamps, France, May 24 – May 26, 2005

Abstract                    More than 80’000 tons of materials have to be transported and installed down into the LHC tunnel. The magnet assemblies which represent about 50’000 tons, will be transported according to the master schedule between March 2005 and November 2006. Considering that these about 1’800 cryo-magnets will be transported at a maximum speed of 3 km/h in a narrow tube (where installation works and hardware commissioning activities are ongoing) this duration of 21 months is a real challenge. This paper aims at describing: - the information flows between the different people involved in the logistics attached to the cryo-magnets, - the organization chosen within the Installation Coordination group, - the problems encountered so far and the solutions adopted. The coordination process with other underground transport and activities, mainly for the QRL will also be presented

General Services Installation : Assessment of the Planning and Coordination in the Field

Authors                  ForazK ; Grillot, S

Reference             CERN-TS-Note-2005-005-IC ; TS-Note-2005-005-IC. - 2005.

Presented at        2nd TS Workshop Archamps, France, May 24 – May 26, 2005

Abstract                    The start of the LHC installation in 2002 followed immediately the LEP dismantling. The first phase, i.e. the general services installation which is drawing to a close has involved about ten different trades, distributed in seven Groups all working with different types and sizes of contracts. This task has been planned and coordinated by the Installation Coordination group of the TS Department. Three years after the start of the works, we aim at making an assessment of the planning and coordination in the field. This paper will present the evolution of the work in this phase and will introduce a critical analysis focusing on scheduling, deadline keeping, coordination, general and particular organization, technical organization, safety, etc.



 Scheduling the Installation of the Large Hadron Collider

Authors                  Weisz, Sylvain; Foraz, Katy; Gaillard, Hubert; Lari, Luisella

Presented at        European Particle Accelerator Conference 04, Lucerne, Switzerland - July 5-9, 2004

Abstract                    The size and complexity of the LHC project at CERN calls for a strong co-ordination of all installation activities. The detailed installation planning has to take into account many constraints such as the component production rates, the installation contracts or the transport and handling requirements in a narrow tunnel with limited access points. The planning also needs to be flexible enough to cope with aleas that are unavoidable in such a large project that spans over many years. This paper describes the methodology followed by the team responsible for the planning and logistics in order to stay reactive to the actual progress of the installation and to keep optimising the usage of resources.

Logistics of LHC cryodipoles : from simulation to storage management

Authors                  K. Foraz, B. Nicquevert, D. Tommasini

Reference             TS-Note-2004-013.- Geneva : CERN, 2004    

Presented at        European Particle Accelerator Conference 04, Lucerne, Switzerland - July 5-9, 2004

Abstract                    The main families of LHC superconducting cryomagnets consist of approximately 1240 cryodipoles and 480 Short Straight Sections (SSS). The different contracts, which are constraining the production and installation of these cryomagnets, have been initially rated according to the baseline schedule, based on a "just in time" scheme. However the complexity of the construction and the time required to fully test the cryomagnets require that each contract is decoupled as much as possible from the others' evolutions and impose temporary storage between different assembly and test activities. Therefore, a tool simulating the logistics over the whole duration of the project was created in order to determine the number of cryomagnets to be stored at the various stages of their production. In this paper the organization of cryomagnet flow and the main challenges of logistics are analyzed on the basis of the planning of each main step before installation in the LHC. Finally, the solutions implemented for storage, handling and transportation are presented and discussed.

Installation of an accelerator : from theory to practice

Authors                  ForazK ; Vitasse, Michel ; Weisz, S

Reference             TS-Note-2004-012. - 2004.

Presented at         TS Workshop Archamps, France, May 4 – May 6, 2004

Abstract                    The size and complexity of the LHC project at CERN calls for a strong co-ordination of all installation activities. The detailed installation planning has to take into account many constraints such as the component production rates, the installation contracts or the transport and handling requirements in a narrow tunnel with limited access points. The planning also needs to be flexible enough to cope with aleas that are unavoidable in such a large project that spans over many years. This paper describes the follow-up methodology, both in the field and in the office, adopted by the IC team to assist the groups involved in the installation of the LHC machine.


Installation scheduling

Authors: Foraz, K (CERN)

Reference             LHC-Project-Report-672 ; CERN-LHC-Project-Report-672

Presented at        LHC days 2003, Les Diablerets, France, 2 - 4 Jun 2003

Abstract                    Since January 2003, the installation and coordination group takes care of the installation of the LHC. In March 2003 new target milestones have been issued. This paper aims to give an overview of what and how the new group interacts with project leader’s office and CERN’s groups and divisions to consolidate the target milestones.

Planning et coordination de l'installation du LHC

Author(s)               Colloca, C (CERN) ; Foraz, K (CERN)

Presented at        6th ST Workshop, Thoiry, France, 1 - 3 Apr 2003

Abstract                    La division ST joue un rôle clé dans le projet LHC puisque fournissant une grande partie de l'infrastructure (génie civil, électricité, traitements de l'air, systèmes hydrauliques, transport, détection, contrôle d'accès…) tant pour la machine que pour les zones expérimentales. Un planning de coordination unique et consensuel entre les différents intervenants pour le design et l'installation des différents équipements est primordial pour la réussite du projet. Ce papier décrit les procédures pour obtenir ce planning unique, les modes d'information et de validation des différents changements, ainsi que les liens entre les différents acteurs de la planification du projet : à savoir les groupes ou divisions installateurs, le nouveau groupe de «Coordination de l'Installation » et la direction du projet LHC.


ST LHC Budget Follow-up

Authors                  Foraz, K; Skelton, K

Reference             CERN-ST-2001-023.- Geneva : CERN, 2001 - 6 p.   

Presented at        4th ST Workshop Chamonix, France, 30 January - 2 February 2001

Abstract                    The ST division is deeply implicated in the LHC project, with a budget of more than 20% of the overall cost of the project. It is therefore important to monitor future estimates, the actual situation and to see where there are divergences between the two. A database has been created presenting the figures for each contract, group, and for the division as a whole. Despite the various types of contract management, the system presents the results in a uniform manner. It allows the initial, present and future situations to be easily reviewed. This highlights any problem areas, facilitates decision-making and enables us to inform the hierarchy of any changes that may have occurred.



Le rôle du groupe ST-CV vis-à-vis des expériences

Author(s)               Foraz, K

Reference             CERN-ST-99-027.- Geneva : CERN, 1999 - 6 p.   

Presented at         2nd ST Workshop Chamonix, France, February 2 - 5, 1999

Abstract                    Les principales activités du groupe ST–CV sont l’opération, la maintenance et la consolidation des systèmes de refroidissement et de traitement d’air, ainsi que la conception et l’installation de nouveaux systèmes, pour les machines et les zones expérimentales. Outre ces activités propres au mandat, le groupe offre aux expériences ses compétences pour la détermination de systèmes optimaux, pour la partie primaire des systèmes de refroidissement. En effet, les membres de ST–CV possèdent une expérience confirmée dans la conception, l’installation, le choix de matériels, les standards, etc. pour ces systèmes. Pour ce faire, le groupe a mis en place une équipe d’ingénieurs compétents dans les domaines précités, et dans les calculs de dynamique des fluides. Ces ingénieurs ont déjà réalisé de nombreux projets pour les expériences (ALICE, CMS, ATLAS, NA50, etc.). Le présent document donne une vue d’ensemble qualitative des projets réalisés.


Planning LHC : Procédures

Authors                  Foraz, K

Reference             CERN-ST-98-009.- Geneva : CERN, 1998 - 4 p.

Presented at        1st ST Workshop Chamonix, France, 1998

Abstract                    La planification d’un grand projet tel que le LHC doit tenir compte des contraintes techniques mais aussi financières. Du fait de la complexité du projet et du nombre d’intervenants, la planification du LHC doit être un système organisé et structuré. Cette idée amène à une hiérarchisation des niveaux du système planning. Le succès du projet dépendra des plannings de détails et de coordination de toutes les activités associées. La Division ST joue un rôle clé dans le projet LHC. Elle adaptera l’existant et fournira les nouvelles infrastructures, de façon à satisfaire les besoins du nouvel accélérateur et de ses zones expérimentales, en tenant compte des contraintes financières. La Division ST met à la disposition du projet ses compétences et ses ressources dans les domaines du génie civil, du refroidissement, du chauffage, de la ventilation, du transport, du contrôle d’accès, des télécommunications.