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Mr P. Ciriani (CERN)24/05/2005, 09:00
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Dr R. Schmidt24/05/2005, 09:10PresentationFor the LHC to provide particle physics with proton-proton collisions at the centre of mass energy of 14 TeV with a luminosity of 10^34 cm- 2s-1, the machine will operate with high-field dipole magnets using NbTi superconductors cooled to below the lambda point of helium. In order to reach design performance, the LHC requires both, the use of existing technologies pushed to the limits...Go to contribution page
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Mr S. Grillot (CERN)24/05/2005, 09:50The 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...Go to contribution page
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Mrs K. Foraz (CERN)24/05/2005, 10:10More 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...Go to contribution page
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Mr M. VADON24/05/2005, 10:30La coordination de sécurité pour l'installation du LHC et de ses expériences a été mise en place lors du démantèlement du LEP. Depuis, les contractants et les surveillants de chantier ont fait beaucoup de progrès en matière de sécurité et les procédures en vigueur sont maintenant suivies. Néanmoins, des accidents et incidents se produisent encore et pourraient être facilement évités. Un...Go to contribution page
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Mr J. Sakkinen, S. Prodon (CERN)24/05/2005, 11:10Ce papier présente l’évolution de l’organisation de la logistique de transport pour le projet QRL : d’une logistique basique d’acheminement en position des éléments arrivant au CERN à la gestion d’un stock tampon d’une centaine d’éléments en souterrain et de flux multiples d’alimentation de chantiers de réparation en surface et en souterrain. La philosophie et les modalités de mise en...Go to contribution page
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Mr Kurt Artoos (CERN)24/05/2005, 11:30About 1800 LHC cryo-magnets will be installed in the LHC tunnel. The transport and installation of the LHC cryo-magnets in the LEP tunnel originally designed for smaller, lighter LEP magnets have required development of completely new handling solutions. The severe space constraints combined with the long, heavy loads meant that solutions had to be very sophisticated. The equipment needed...Go to contribution page
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Mr J.-M. Chevalley (CERN)24/05/2005, 11:50Le transport et l’installation de quelque 1800 cryo-aimants dans le tunnel LHC seront réalisés à l’aide d’équipements de transport et de manutention de haute technologie spécialement développés par le groupe TS-IC. La section HM devra assurer la maintenance de toute cette chaîne d’équipements : le pont roulant pour la descente des cryo-aimants dans le tunnel LHC, les véhicules...Go to contribution page
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Ms C. Bertone (CERN)24/05/2005, 12:10The 13 new cold boxes, 5 distribution feed boxes QUI and 8 cryogenic refrigerators QURC necessary to feed LHC with helium, have been installed in the LHC underground areas between May 2003 and June 2005. This paper describes the work over these two years and in particular the design and construction of handling equipment tools, the worksite activities, the operation and finally the...Go to contribution page
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Mr S. Weisz (CERN)24/05/2005, 14:00The LHC Installation planning was originally articulated with 4 main successive phases: the installation of the general services, the installation of the cryogenic line (QRL), the installation of the machine elements and the hardware commissioning. While the installation of the general services is now almost finished - see presentation by K. Foraz and S. Grillot -, several problems and...Go to contribution page
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Mr M. Poehler24/05/2005, 14:40Dès fin 2001, la section Design Office TS-CE est mandatée pour l’étude et la conception d’une nouvelle salle de contrôle des accélérateurs. Après de multiples variantes d’études et d’implantation, la direction CERN retient en début 2004, sur la base de facteurs économiques, le projet CCC, consistant en l’extension et le réaménagement de la PCR existante. Un Working Group TS Infrastructure...Go to contribution page
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Mr M. Batz24/05/2005, 15:00Control room operation of the Technical Infrastructure under the responsibility of the Technical Support Department (TS) was carried out for decades based on the round-the-clock operation from the Technical Control Room (TCR). The TCR functions and services have been integrated in the AB Department in January 2005 and will finally be assumed by the CERN Control Centre (CCC) in the...Go to contribution page
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Mr J. Stowisek, Mr S. Roy24/05/2005, 15:20In the summer of 2005, the Technical Infrastructure Monitoring (TIM) system will replace the Technical Data Server (TDS) as the monitoring system of CERN’s technical services. Whereas the TDS was designed for the LEP, TIM will have to cope with the much more extensive monitoring needs of the LHC era. To cater for this, the new system has been built on industry-standard hardware and...Go to contribution page
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Mr D. Lacarrere, Mr F. Butin, Mr J. Osborne, Mr S. Evrard24/05/2005, 16:00Following handover by the civil engineering contractors, the new LHC experimental areas are being fitted-out with appropriate infrastructure and technical services. In parallel, and in order to make up for the short time available, the installation of the detectors has already started in the experimental caverns. In addition, the LHC machine installation now has a non-negligible impact on...Go to contribution page
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Mr M. Gastal24/05/2005, 16:40The ALICE experimental area management team faces various challenges when it comes to sharing scarce resources, indispensable to any efficient installation in a category one worksite. Space, cranes, jigs, and personnel with key competences have to be carefully allocated to activities so as to avoid slowing down work progress. To this intent, a resource loaded planning has been developed...Go to contribution page
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Mr J.C. Gayde24/05/2005, 17:00La section TS/SU-EM fournit les informations géométriques de formes, dimensions et positions des infrastructures des cavernes et des détecteurs des expériences LHC. Elle intervient à toutes les étapes de construction et ses opérations sont dépendantes des autres chantiers, des entreprises en particulier, et de la configuration changeante des lieux. Les travaux de TS/SU-EM dans les...Go to contribution page
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Mr J. Ridewood24/05/2005, 17:20PresentationA summary of the general service requirements for a large warm dipole magnet and the challenges and issues associated with their installation will be presented. The LHCb spectrometer magnet will be used as an example, covering principally the power supply, cabling and cooling water system from conception to realisation and commissioning.Go to contribution page
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Dr D. Macina24/05/2005, 17:40The LHC experiments are building very complex detectors which will cope with the very high collision energy and luminosity provided by the LHC. The final commissioning of these detectors will require special beam conditions during the very early stage of the LHC operation. In addition, the five experiments will have a number of different requests in order to maximize the physics discovery...Go to contribution page
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Mr E. Tsesmelis25/05/2005, 09:00The experimental areas are the geographical interface between the LHC experiments and the accelerator. An organisational structure pertaining to the experimental areas has been put in place to coordinate and manage the financial, manpower and logistic resources, to make sure of an effective interface to the experiments and to the LHC machine, to develop, monitor and implement schedules, to...Go to contribution page
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Mrs A.L. Perrot, Mr T. Wijnands25/05/2005, 09:20In contrast with other accelerators at CERN, a large amount of technical equipment will be located in the LHC tunnel, the underground areas and in the experimental caverns where they will be exposed to radiation. Nearly all these equipment make, to a certain extent, use of commercial microelectronics which is extremely sensitive to radiation damage, both instantaneous damage and cumulative...Go to contribution page
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Mr A. Cherif, Mr S. Atieh25/05/2005, 09:50The Cryogenic Distribution Line (QRL), running along the machine tunnel parallel to the regular lattice of superconducting quadrupole and dipole magnets of LHC, distributes the refrigeration fluids produced by the refrigerators over long distances. With a total length of about 25.8 km, the QRL consists of a modular set-up of pipe and Service Modules (SM), Vacuum Barriers (VB), Fixed Points...Go to contribution page
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Mr P. Ninin25/05/2005, 10:20The LHC complex is divided into a number of zones with different levels of access controls. Inside the interlocked areas, the personnel protection is ensured by the LHC Access System. The system is made of two parts: the LHC Access Safety System and the LHC Access Control System. During machine operation, the LHC Access Safety System ensures the collective protection of the personnel...Go to contribution page
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Mr A. Bertarelli25/05/2005, 11:00In the framework of the LHC Collimator project, MME group has been assigned the task to design the series collimators and to manufacture two prototypes of the Secondary Collimators (TCS) that were successfully tested in autumn 2004. The basic design of the TCS was completed by January 2004: the production of the prototypes in TS workshops started successively and was achieved by June 2004,...Go to contribution page
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Mr S. Calatroni25/05/2005, 11:20The RF contacts for the TCS collimators must satisfy several stringent requirements in terms of electrical contact resistance, mechanical robustness, wear resistance and high temperature stability. The guidelines leading to the final choice of contact materials will be discussed in detail, and the results of the experimental tests carried out in order to validate the choices will be illustrated.Go to contribution page
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Mrs H. Mainaud25/05/2005, 11:40CERN is studying the feasibility of building a high energy e+ e- linear collider: the CLIC (Compact Linear Collider). One of the challenges of such a collider is the prealignment tolerance on the transverse positions of the linacs components which is typically ten micrometers over distances of 200m. This paper reviews all studies carried out in order to find one possible solution for...Go to contribution page
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Mr G. Arnau Izquierdo25/05/2005, 12:00Les structures accélératrices du projet CLIC devront supporter 1011 impulsions de RF à 30 GHz et des champs électriques de 300 MV/m en surface. Les matériaux classiques pour les cavités RF ont montré leurs limites, d'où la nécessité de développer des technologies spéciales pour leur fabrication. Des structures devront être réalisées dans des tolérances de l’ordre du micromètre, avec des...Go to contribution page
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Mr P. Costa Pinto25/05/2005, 14:00The vacuum chambers of nearly all the warm magnets of the LHC (MBXW, MQW, MSI, MSD, etc…) will be coated with a Ti-Zr-V thin film by magnetron sputtering. The NEG coating is necessary to provide uniform pumping speed along the chambers and to suppress electron cloud instabilities and dynamic outgassing. The about 300 chambers will be coated using the existing facility, developed for the...Go to contribution page
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Mr G. Favre25/05/2005, 14:20Le soudage de l’aluminium requiert un savoir-faire spécifique pour éviter la formation, dans la soudure, de défauts rédhibitoires tels que les manques de fusion ou soufflures. Ces défauts ont pour causes principales la présence d’une couche d’alumine, une diffusivité thermique élevée et une solubilité très faible de l’hydrogène dans le métal à l’état solide. Les règles de l’art à appliquer...Go to contribution page
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Mr S. Mathot25/05/2005, 14:40Le brasage sous vide de jonctions alumine (Al2O3) / métal a commencé dans les années 30-40 avec la mise au point de procédés de métallisation à partir de métaux réfractaires (Mo, W). Ces métallisations réalisées généralement sous atmosphères d’hydrogène sont toujours développées et largement utilisées pour le brasage des alumines. Dans les années 60-70, de nouveaux alliages ont commencé...Go to contribution page
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Mr R. DE OLIVEIRA (TS-DEM)25/05/2005, 15:00To improve the precision of particle detection measurements, there is a growing interest in the physics community for circuits built with low mass materials that are more transparent to particles. We have been working for two years in setting up a new process to build those high-density, low mass multilayer circuits based on aluminium instead of copper that is commonly used in industry....Go to contribution page
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Mr C. Podevin, Mr M. Jones25/05/2005, 15:20Depuis la constitution des données géométriques théoriques des faisceaux jusqu'à la détermination des positions spatiales réelles des éléments des accélérateurs, en passant, entre autres, par les vérifications de l'instrumentation utilisée, les différentes opérations d'alignement des accélérateurs constituent un processus au cours duquel chaque étape est contrôlée et validée à travers la...Go to contribution page
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Mrs E. Sanchez-Corral, Mr S. Petit25/05/2005, 16:10A collaboration project between the Safety Commission (SC) and the Controls, Safety and Engineering databases group (TS/CSE) started last year. The aim of this collaboration is to transfer several SC applications from their local environments onto the D7i-MTF EDMS framework, for which the TS/CSE group is responsible. Different domains of activity and projects have been defined in the areas...Go to contribution page
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Mr P. Martel25/05/2005, 16:30In this document are presented some of the new functionalities available in the new release of Datastream 7i. The features now available can substantially improve the performance of the system as well as reduce the overall administrative load to manage work orders. A brief overview of how the lifecycle of an equipment is handled in the Datastream 7i is given as well as a comment on the...Go to contribution page
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Mr M. Battistin25/05/2005, 16:50Computational Fluid Dynamics (CFD) is an analysis of fluid flow, heat transfer and associated phenomena in physical systems using computers. CFD has been used at CERN since 1993 by the TS-CV group, to solve thermo-fluid related problems, particularly during the development, design and construction phases of the LHC experiments. Computer models based on CFD techniques can be employed to...Go to contribution page
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Ms A. Funken25/05/2005, 17:10Au milieu de l’année 1999, le projet de renforcement des infrastructures techniques du Centre de Calcul a été lancé afin de répondre aux besoins des Fermes de Calculs destinées au traitement et stockage des données des expériences du LHC. En 2008, première année de fonctionnement du LHC à pleine luminosité, les Fermes de Calculs devraient occuper 2500 m2 et consommer une puissance...Go to contribution page
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Ms N. Bangert25/05/2005, 17:30In the fight against the Legionnaires’ disease, the proper maintenance of cooling towers is an important issue. Legal requirements concerning the correct maintenance and analysis have only been recently defined by the French law. These reinforce the recommendations issued by the French ministry in June 2001. The main activities to be taken care of in the operation and maintenance...Go to contribution page
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Mr P. Minginette (CERN)25/05/2005, 17:50Au cours du long shutdown de 2005, les aimants PS vont entamer une cure de jouvence pour être en mesure de répondre aux besoins du LHC. Ainsi la moitié des dipôles du PS, 50 éléments sur 100, seront déplacés, rénovés et réinstallés en 2005. Compte tenu de l’augmentation significative des cadences de manutention (un aimant par semaine par rapport à un aimant par mois en période de shutdown...Go to contribution page
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Mrs B. MAGNIN (TS-DEM)26/05/2005, 09:00Le bureau d’etudes TS/DEM-BE est issu de la fusion en 2002 de deux sections distinctes. Celles-ci avaient des outils et des methodes de travail differents que nous nous sommes attaches à unifier au cours de l’annee 2004. Ce document presente les deux axes sur lesquels nous avons travaille. D’une part, nous avons defini les bases techniques pour les etudes de circuits imprimes et...Go to contribution page
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Mr J-P. Corso (CERN)26/05/2005, 09:20Remplir 27 km de l’étroit tunnel du LEP avec plusieurs milliers d’équipements est le défi posé par le LHC et à relever par les techniciens et ingénieurs du CERN. Le LEP avait initié ce concept avec un outil nommé LEGO ; Le LHC a encore franchi une étape avec DMU (Digital Mock-Up), en tirant profit de l’évolution significative des outils informatiques (langages de programmation et...Go to contribution page
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Mr T. Hakulinen, Mr Y. Boncompagni26/05/2005, 09:40The main project for the CAE section in the near future is now the progressive introduction of Catia V5 and its data manager SmarTeam in CERN design offices without disturbing the LHC project. The report presents the section's guidelines, plans, propositions, and open questions on the following topics: policy of Catia usage in the frame of LHC project, user training and Euclid data migration.Go to contribution page
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Mr C. Delamare, Mr R. Folch26/05/2005, 10:00Le workpackage TS-MME pour la fabrication des DFBAN&O a généré plus de 1200 plans de détail en moins d’une année. Ce grand volume – parmi les plus importants du bureau d’études – associé à l’impératif de démarrer la fabrication en parallèle et avec une bonne traçabilité, a révélé la nécessité d’outils de gestion appropriés entre la conception et la production.Go to contribution page
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Mr T. Renaglia26/05/2005, 10:20L’ondulateur LHC est un aimant composé de 4 dipôles à champs alternés et successifs, combiné avec le D3, ces dipôles excitent le faisceau LHC qui va perdre de l’énergie en émettant des photons dans le plan horizontal de la machine. La lumière ainsi générée permet, au moyen d’un système optique sophistiqué, de mesurer la taille et la position du faisceau circulant. Le champ magnétique de 5...Go to contribution page
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Mr C. Martel26/05/2005, 11:00Le bureau d’études CV, au même titre que les autres bureaux d’études du CERN, est étroitement lié au déroulement du projet LHC. Dans ce contexte, l’adaptation devient une dimension essentielle pour assurer des prestations organisées et efficaces. En effet, la rentabilité, l’optimisation des ressources, la stratégie de sous-traitance, les contraintes imposées par la coordination générale...Go to contribution page
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26/05/2005, 11:20
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Mr E. Van der Bij26/05/2005, 14:00The DEM group in the Technical Support department provides services for the fabrication of special printed circuits that are invaluable for the whole particle physics community. The capability is based around a core technology that is developed by using skills to etch and process materials that are not commonly used in industry, combined with production methods used in PCB manufacturing....Go to contribution page
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Mr R. Principe26/05/2005, 14:20Durant les dernières années la section TS/CV-LHC a été concernée par un grand nombre de contrats de fourniture et installation pour le LHC. Aujourd’hui tous les principaux systèmes hydrauliques ont été rénovés et quelque deux cents kilomètres de nouvelle tuyauterie ont été installés dans le tunnel. Cette intense activité, comprenant l’installation d’un certain nombre de lignes...Go to contribution page
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Mr K. Kahle26/05/2005, 14:40In 2001 a first Static Var Compensator (SVC) based on a set of Thyristor Controlled Reactors was commissioned for the SPS. This was the first step in the process of replacing the obsolete Saturated Reactors installed in the early seventies. The second step is now in preparation: dismantling of the so-called “North compensator” and replacing it with a second SVC, essentially identical to...Go to contribution page
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Mrs C. Colloca26/05/2005, 15:00Les 85% du patrimoine infrastructurel du CERN, ainsi que leur contenu, ont un âge qui varie entre 13 et 51 ans. Etant donné que la durée de vie moyenne des ouvrages est de 30 ans, la maintenance, qu’elle soit préventive ou corrective, ne suffit parfois pas à garantir la perpétuité d’exploitation d’un élément constructif ou d’un équipement afin d’assurer le maintien du patrimoine à un état...Go to contribution page
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Mrs L.A. Lopez-Hernandez26/05/2005, 15:20Le CERN passe des contrats avec des entreprises dont le personnel peut être amené à travailler sur le domaine de l’Organisation. Comme principe général, ces entreprises sont soumises au Droit de leur pays d’origine, mais elles doivent respecter aussi les dispositions d’ordre public du pays où elles exercent leur activité, c’est à dire les dispositions suisses sur la partie suisse et les...Go to contribution page
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Mr J. RidewoodLHC and ExperimentsPresentationA summary of the general service requirements for a large warm dipole magnet and the challenges and issues associated with their installation will be presented. The LHCb spectrometer magnet will be used as an example, covering principally the power supply, cabling and cooling water system from conception to realisation and commissioning.Go to contribution page
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