Lasseur, C. , Gayde, J-C.
04/05/2004, 09:00
La physique des particules a toujours exige une connaissance precise de la geometrie des equipements experimentaux et la metrologie des detecteurs a ete de concert avec celle des accelerateurs. Les premiers systemes de detection, de dimensions modestes, demandaient deja un positionnement le plus pres du ‘theorique’, les premieres mesures tridimensionnelles ont ete pratiquees pour la...
9.
SYSTEME DE PLC POUR LA SUPERVISION DE LA DISTRIBUTION BASSE TENSION DES EXPERIENCES ALICE ET LHCB
Burdet , G.
04/05/2004, 09:20
Le groupe TS/EL étudie et réalise la distribution électrique basse tension pour alimenter les racks contenant l’électronique associée aux détecteurs dans les zones expérimentales du LHC.
La distribution basse tension utilisera des tableaux récupérés des expériences du LEP pour ALICE et LHCb et un système basé sur des gaines CANALIS pour ATLAS et CMS.
L’ensemble de la distribution électrique...
Mallon, S., Manola-Poggioli, E.
04/05/2004, 11:40
The MTF system was developed to capture the design, manufacturing, test and installation data of equipment built for LHC. Today, more than 120.000 descriptions of LHC equipment are being managed with the MTF. The acquisition of the equipment data is both an organisational and a technical challenge. For expensive equipment such as the LHC dipoles a reliable and robust non-conformance...
Foraz K., Vitasse, M., Weisz, S.
04/05/2004, 12:00
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...
Foraz, K. , Nicquevert, B.
04/05/2004, 14:10
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...
Bertone,C. , Boettcher, O.
04/05/2004, 16:30
Within the last 4 years TS-IC-HM (former ST-HM group) integrated about 150 transport and handling supplies including 29 cranes, 20 fork lift trucks, 60 tunnel vehicles. Most of these are standardised supplies, but very often special functionality has been implemented and the complexity of the equipment has been increased. With the Rocla cryo-dipol transporters even prototype equipment was...
Inigo Golfin, J. , Principe, R.
05/05/2004, 09:00
The cooling and ventilation group deals with a great number of supplies and installation contracts, as well as some service ones, in relation to the LHC project. In the course of the last years the group has increased its experience in the handling of these contracts in particular as a consequence of the difficult situations sometimes faced, which have been trying but enriching. This paper...
Missiaen, D. , Quesnel, J-P.
05/05/2004, 11:00
L’alignement des quelques 10000 éléments répartis sur près de 60km de lignes de faisceaux met en œuvre des techniques spécialement développées pour atteindre les précisions requises de positionnement dans des temps d’intervention les plus courts possibles. Pour palier l’accroissement considérable de travail lié à la construction du LHC, le groupe SU (« Métrologie des Grandes Dimensions ») a...
Butin, F., Evrard, S., Gastal, M.
05/05/2004, 11:40
Following handover by the civil engineering contractors the new LHC experimental areas must be fitted-out with appropriate infrastructure and technical services. An installation schedule taking into account all the activities involved must be developed and kept up-to-date. Integration of this installation planning with that of the LHC Machine and detectors of the experiment are vital elements....
Friman, P., Van Utyvinck, E.
06/05/2004, 11:20
The CAE section is well known for its daily support of CAD usage at CERN but, in fact, a large part of the section’s activity is dedicated to anticipating future needs and dealing with operating systems issues and evolution of CAD software. The section supports more than 200 professional CAD users located all around the site, and it helps many other users at CERN and outside with CAD data...