1026936 SzGeCERN 20190221004538.0 oai:cds.cern.ch:1026936 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN CERN-AT-2007-004 eng CERN Library AT-2007-004 Lebrun, P Superconductivity and Cryogenics for Future High-Energy Accelerators 2007 Geneva CERN 26 Mar 2007 9 p High-energy particle accelerators are used to create new forms of matter, probe its structure at very small scales, reproduce in the laboratory very high temperature conditions naturally present in astronomical or cosmological objects, and generate high-brilliance electromagnetic radiation. To accelerate, guide and focus beams of charged particles, they produce electrical and magnetic fields in RF cavities and electromagnets. Economically attaining higher fields is an essential condition for sustaining development of performance while containing increase in size, capital and operating costs. Superconductivity and cryogenics have therefore become and will remain enabling technologies for high-energy accelerators. After discussing the rationale for their use, we present several projects of future machines, under construction or under study, with emphasis on their specific requirements, constraints and adopted solutions. CERN EDS Cryoprague 2006 OA CERN-AT CLAS1 SzGeCERN Accelerators and Storage Rings CERN PREPRINT XX XX AT http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=at-2007-004 Access to fulltext document http://cds.cern.ch/record/1026936/files/at-2007-004.pdf Access to fulltext document evelyne.delucinge@cern.ch CERN n 200715 11 20100608 1157 CER01 20070410 947737 prague20060717 PUBLIC 002685841CER PREPRINT ConferencePaper 811057 SzGeCERN 20230531152005.0 oai:cds.cern.ch:811057 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN-LHC-Project-Report-802 eng LHC-Project-Report-802 Lebrun, P Cryogénie et supraconductivité pour le grand collisionneur de hadrons (LHC) du CERN 2004 Geneva CERN 14 Dec 2004 13 p paper The Large Hadron Collider (LHC), presently in construction at CERN, the European Organization for Nuclear Research near Geneva (Switzerland), will be the most advanced research instrument of the world’s high-energy physics community, providing access to the structure of matter at an unprecedentedly fine scale. Reusing the 26.7 km circumference tunnel and infrastructure of the past LEP electron-positron collider, the LHC makes use of advanced technology: high-field superconducting magnets based on niobium-titanium alloy conductors operating in superfluid helium at 1.9 K will guide and bring into collision intense beams of protons and ions. After some ten years of focussed R&D, the LHC components are being series-built by specialized industry in CERN member states and procured through world-wide collaborations. After briefly recalling the physics goals, performance challenges and design choices, we present main aspects of cryogenics and superconductivity as key technologies for the LHC and report on its construction progress. Résumé Le Grand Collisionneur de Hadrons (Large Hadron Collider ou LHC) en construction au CERN, l´Organisation Européenne pour la Recherche Nucléaire située près de Genève (Suisse), constituera l´instrument le plus avancé de recherche en physique des particules, permettant d´explorer la matière à une échelle sans précédent. Le LHC, qui réutilisera le tunnel circulaire de 26,7 km de circonférence et l´infrastructure technique du collisionneur d´électrons et de positons LEP, est basé sur la cryogénie et la supraconductivité avancées : des aimants supraconducteurs à champ élevé utilisant des conducteurs en alliage de niobium et de titane, fonctionnant dans l´hélium superfluide à 1,9 K permettront de faire circuler et entrer en collision des faisceaux intenses de protons et d´ions de haute énergie. Après une décennie de développement ciblé, les composants du LHC sont produits en série par l´industrie spécialisée, dans les états membres du CERN ainsi qu'à travers des collaborations internationales avec d'autres régions du monde. Un bref rappel des buts de recherche, des défis et des choix techniques permettra de présenter les aspects principaux des technologies clés que constituent la cryogénie et la supraconductivité, et de mentionner l’état d’avancement du projet. CERN EDS SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable LHC Rev. Gén. Froid CERN Central Library LHC-PROJECT-REPORT-802 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhcproj-2004-802 Access to fulltext document http://cds.cern.ch/record/811057/files/lhc-project-report-802.pdf Access to fulltext document evelyne.delucinge@cern.ch CERN n 200501 11 20100401 2001 CER01 20041215 PUBLIC 002499133CER PREPRINT 0001 788536 SzGeCERN 20230531152008.0 oai:cds.cern.ch:788536 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN LHC-Project-Report-745 eng CERN-LHC-Project-Report-745 Lebrun, P Industrial Technology for Unprecented Energy and Luminosity The Large Hadron Collider 2004 Geneva CERN 2004 6 p paper With over 3 billion Swiss francs procurement contracts under execution in industry and the installation of major technical systems in its first 3.3 km sector, the Large Hadron Collider (LHC) construction is now in full swing at CERN, the European Organization for Nuclear Research. The LHC is not only the most challenging particle accelerator, it is also the largest global project ever for a scientific instrument based on advanced technology. Starting from accelerator performance requirements, we recall how these can be met by an appropriate combination of technologies, such as high-field superconducting magnets, superfluid helium cryogenics, power electronics, with particular emphasis on developments required to meet demanding specifications, and industrialization issues which had to be solved for achieving series production of precision components under tight quality assurance and within limited resources. This provides the opportunity for reviewing the production status of the main systems and the progress of the project. CERN EDS SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-report-745 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhcproj-2004-745 Access to fulltext document http://cds.cern.ch/record/788536/files/lhc-project-report-745.pdf Access to fulltext document evelyne.delucinge@cern.ch CERN n 200435 11 20100401 2001 CER01 20040823 PUBLIC 002478912CER PREPRINT 0001 1012032 SzGeCERN 20230904164907.0 oai:cds.cern.ch:1012032 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN 10.17181/CERN.KOEP.SD6C DOI CERN-AT-2007-001 eng CERN Library AT-2007-001 Lebrun, P An Introduction to Cryogenics 2007 Geneva CERN 18 Jan 2007 24 p This paper aims at introducing cryogenics to non-specialists. It is not a cryogenics course, for which there exists several excellent textbooks mentioned in the bibliography. Rather, it tries to convey in a synthetic form the essential features of cryogenic engineering and to raise awareness on key design and construction issues of cryogenic devices and systems. The presentation of basic processes, implementation techniques and typical values for physical and engineering parameters is illustrated by applications to helium cryogenics. CERN EDS OA CERN-AT CLAS1 SzGeCERN Accelerators and Storage Rings CERN PREPRINT XX XX AT http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=at-2007-001 Access to fulltext document http://cds.cern.ch/record/1012032/files/at-2007-001.pdf Access to fulltext document evelyne.delucinge@cern.ch CERN n 200704 11 20100608 1157 CER01 20070122 PUBLIC 002673027CER PREPRINT 639631 SzGeCERN 20170112152121.0 oai:cds.cern.ch:639631 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN CERN-AT-2003-005 eng Lebrun, P Cryogenics, Key to Advanced Science and Technology 2003 Geneva CERN 27 Aug 2003 10 p paper revised version number 1 submitted on 2003-08-28 08:42:15 More than a complete overview of cryogenics today, this brief paper aims at presenting its continuing relation with advanced science and technology, not only as ancillary, but also in many instances as a central technique driving the development of ideas as much as the practical achievements. Its intellectually demanding and technically challenging nature in a variety of disciplines also make it an excellent training ground for technicians, engineers and applied physicists. CERN EDS 20030827SLAC CLAS1 SzGeCERN Accelerators and Storage Rings CERN PREPRINT XX XX AT CERN Depot 4, bldg. 500-S-023 (DE4) CERN-AT-2003-005 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=at-2003-005 Access to fulltext document http://cds.cern.ch/record/639631/files/at-2003-005.pdf Access to fulltext document http://cds.cern.ch/record/639631/files/at-2003-005.ps.gz Access to fulltext document evelyne.delucinge@cern.ch CERN n 200335 11 20100608 1158 CER01 20030827 681854 washington20030817 PUBLIC 002396169CER PREPRINT ConferencePaper 0001 68632 SzGeCERN 20260413223701.0 oai:cds.cern.ch:68632 cerncds:FULLTEXT cerncds:REPORT CERN-LHC-Note-52 CERN-SPS-EMA-Internal-Note-87-14 eng LHC-Note-52 SPS-EMA-Internal-Note-87-14 Preliminary cost estimate of LHC magnet and cryogenics system 1987 Geneva CERN 1 Jun 1987 23 p Paper Technical Note SPSARCHIVE SPS-EA-EMA LHC-Note SzGeCERN Accelerators and Storage Rings CERN CERN-LHC CERN superconducting-magnets CERN costs REPORT CERN EA-EMA Group = Experimental Areas, Magnet Group LHC = Large Hadron Collider CERN SPS Lebrun, Ph Leroy, D Morpurgo, M Perin, R Schmid, J CERN. Geneva. Super Proton Synchrotron Division. Experimental Areas, Magnet Group (SPS-EMA) LHC-Note-52 1017291 CERN Archives. Bldg. 61-S-001 O0426 2835374 15069761 http://cds.cern.ch/record/68632/files/INTERNAL-NOTE-EMA-87-14.pdf Fulltext PDF CERN 200319 1987 SPS-EMA-Internal-Note-87-14 21 20090526 1622 ARC01 19980722 PUBLIC REPORT 65540 SzGeCERN 20170728120854.0 eng Accelerator Technology Division, AT The superfluid helium cryogenic system for the LHC test string: design construction and first operation CERN 1995-10-26 8 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Bézaguet, A Casas-Cubillos, J Flemsaeter, B Gaillard-Grenadier, B Goiffon, T Guinaudeau, H Lebrun, P Marquet, M Serio, L Suraci, A Tavian, L Van Weelderen, R CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-95-40-CR 291272 LHC-Note-357 291272 CERN Archives. Bldg. 61-S-001 V0814 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1995-00-00 CERN-ARCH-AT-1-233 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014764ARC ARC011201 DELETED 65522 SzGeCERN 20170728120920.0 eng Accelerator Technology Division, AT Measurement and analysis of thermal performance of LHC prototype cryostats CERN 1995-09-18 10 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Benda, V Dufay, L Ferlin, G Lebrun, P Riddone, G Rieubland, J M Szeless, B Tavian, L Williams, L CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-95-36-CR 289486 LHC-Note-347 289486 CERN Archives. Bldg. 61-S-001 V0814 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1995-00-00 CERN-ARCH-AT-1-229 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014746ARC ARC011201 DELETED 65520 SzGeCERN 20170728120920.0 eng Accelerator Technology Division, AT Experimental investigation of accidental loss of insulation vacuum in an LHC prototype dipole cryostat CERN 1995-09-08 7 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Lebrun, P Szeless, B Tavian, L Williams, L R CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-95-30-MA 289483 LHC-Note-344 289483 CERN Archives. Bldg. 61-S-001 V0814 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1995-00-00 CERN-ARCH-AT-1-223 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014744ARC ARC011201 DELETED 65509 SzGeCERN 20170728120919.0 eng Accelerator Technology Division, AT Cryogenic systems for accelerators CERN 1995-05-18 22 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Lebrun, P CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-95-08-CR 282905 CERN Archives. Bldg. 61-S-001 V0814 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1995-00-00 CERN-ARCH-AT-1-201 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014733ARC ARC011201 DELETED 65475 SzGeCERN 20170728120916.0 eng Accelerator Technology Division, AT Superfluid helium cryogenics for the Large Hadron Collider project at CERN CERN 1994-06-27 9 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Lebrun, P CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-94-18-CR 266586 LHC-Note-274 266586 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1994-00-00 CERN-ARCH-AT-1-165 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014699ARC ARC011201 DELETED 65474 SzGeCERN 20170728120916.0 eng Accelerator Technology Division, AT Design and construction of a static magnetic refrigerator operating between 1.8 K and 4.5 K CERN 1994-06-27 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Bézaguet, A Casas-Cubillos, J Lebrun, P Losserand-Madoux, R Marquet, M Schmidt-Ricker, M Seyfert, P CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-94-17-CR 266585 LHC-Note-273 266585 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1994-00-00 CERN-ARCH-AT-1-164 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014698ARC ARC011201 DELETED 65473 SzGeCERN 20170728120916.0 eng Accelerator Technology Division, AT A full-scale thermal model of a prototype dipole cryomagnet for the CERN LHC project CERN 1994-06-27 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Dufay, L Ferlin, G Lebrun, P Riddone, G Rieubland, J M Rijllart, A Szeless, B Williams, L CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-94-15-CR-IC-MA 266584 LHC-Note-271 266584 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1994-00-00 CERN-ARCH-AT-1-162 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014697ARC ARC011201 DELETED 65471 SzGeCERN 20170728120915.0 eng Accelerator Technology Division, AT Cryogenic benches for superfluid helium testing of full-scale prototype superconducting magnets for the CERN LHC project CERN 1994-06-27 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Benda, V Granier, M Lebrun, P Novellini, G Sergo, V Tavian, L Vullierme, B CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-94-12-CR 266581 CERN-MT-94-02 266581 LHC-Note-275 266581 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1994-00-00 CERN-ARCH-AT-1-159 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014695ARC ARC011201 DELETED 65470 SzGeCERN 20170728120915.0 eng Accelerator Technology Division, AT Investigation of quench pressure transients in the LHC superconducting magnets CERN 1994-06-27 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Lebrun, P Van Weelderen, R Wahlström, T Williams, L CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-94-16-CR-MA 266580 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1994-00-00 CERN-ARCH-AT-1-163 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014694ARC ARC011201 DELETED 65468 SzGeCERN 20170728120915.0 eng Accelerator Technology Division, AT Cryogenics in CERN accelerators CERN 1994-05-17 6 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Lebrun, P CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-94-08-CR 265543 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1994-00-00 CERN-ARCH-AT-1-155 Permanent 01 20090526 1620 ARC01 19970801 PUBLIC 000014692ARC ARC011201 DELETED 65410 SzGeCERN 20170728113856.0 eng Accelerator Sector, AC LHC Large Hadron Collider accelerator project CERN 1993-11-08 236 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AC Sub-collection: AC Divisional reports Free 1.12.01 CERN proposal AC = Accelerator Sector Baconnier, Y Brianti, G Lebrun, P Mathewson, A G Perin, R CERN. Geneva. Large Hadron Collider (LHC) Study Group CERN-AC-93-03-LHC 257706 CERN Archives. Bldg. 61-S-001 V0811 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1993-00-00 CERN-ARCH-AC-1-14 Permanent 01 20090526 1620 ARC01 19970723 PUBLIC 000014620ARC ARC011201 DELETED 65353 SzGeCERN 20170728120904.0 eng Accelerator Technology Division, AT A pulsed superconducting magnet for a static magnetic refrigerator operating between 1.8 K and 4.5 K CERN 1993-09-21 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Bézaguet, A Casas-Cubillos, J Cyvoct, A Lebrun, P Losserand-Madoux, R Marquet, M Schmidt, M CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-93-29-CR 254509 LHC-Note-241 254509 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1993-00-00 CERN-ARCH-AT-1-119 Permanent 01 20090526 1620 ARC01 19970619 PUBLIC 000014554ARC ARC011201 DELETED 65348 SzGeCERN 20170728120904.0 eng Accelerator Technology Division, AT The superfluid helium model cryoloop for the CERN Large Hadron Collider (LHC) CERN 1993-08-05 9 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Bézaguet, A Casas-Cubillos, J Lebrun, P Marquet, M Tavian, L Van Weelderen, R CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-93-21-CR 253057 LHC-Note-233 253057 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1993-00-00 CERN-ARCH-AT-1-111 Permanent 01 20090526 1620 ARC01 19970619 PUBLIC 000014549ARC ARC011201 DELETED 65347 SzGeCERN 20170728120904.0 eng Accelerator Technology Division, AT Application of liquid-helium cryoplants at CERN CERN 1993-08-05 9 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Dauvergne, J P Delikaris, D Erdt, W K Güsewell, D Haug, F Lebrun, P Passardi, G Rieubland, J M Schmid, J Winkler, G CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-93-20-CR 253055 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1993-00-00 CERN-ARCH-AT-1-110 Permanent 01 20090526 1620 ARC01 19970619 PUBLIC 000014548ARC ARC011201 DELETED 65346 SzGeCERN 20170728120904.0 eng Accelerator Technology Division, AT Cryogenic infrastructure for superfluid helium testing of LHC prototype superconducting magnets CERN 1993-08-05 9 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Benda, V Duraffour, G Guiard-Marigny, A Lebrun, P Momal, F Saban, R Sergo, V Tavian, L Vullierme, B CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-93-22-CR 253053 LHC-Note-234 253053 CERN Archives. Bldg. 61-S-001 V0813 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1993-00-00 CERN-ARCH-AT-1-112 Permanent 01 20090526 1620 ARC01 19970619 PUBLIC 000014547ARC ARC011201 DELETED 65328 SzGeCERN 20170728120902.0 eng Accelerator Technology Division, AT Large scale cryogenics for particle accelerators CERN 1992-09-00 9 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Lebrun, P CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-92-32-CR 242404 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1993-00-00 CERN-ARCH-AT-1-087 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014512ARC ARC011201 DELETED 65315 SzGeCERN 20170728120901.0 eng Accelerator Technology Division, AT Design of LHC prototype dipole cryostats CERN 1992-07-00 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Brunet, J C Kerby, J Lebrun, P Rohmig, P Szeless, B Williams, L R CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-92-19-MA 240954 CERN-AT-MA-92-19 240954 LHC-Note-195 240954 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1992-00-00 CERN-ARCH-AT-1-074 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014499ARC ARC011201 DELETED 65314 SzGeCERN 20170728120901.0 eng Accelerator Technology Division, AT Cryogenic microcalorimeters for the measurement of energy deposition by beam losses in superconducting accelerator magnets CERN 1992-07-00 4 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Blessing, H Lebrun, P Taylor, T Walckiers, L CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-92-18-CR-MA 240427 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1993-00-00 CERN-ARCH-AT-1-073 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014498ARC ARC011201 DELETED 65310 SzGeCERN 20170728120901.0 eng Accelerator Technology Division, AT Design concept and first experimental validation of the superfluid system for the large hadron collider (LHC) project at CERN CERN 1992-06-00 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Casas, J Cyvoct, A Lebrun, P Marquet, M Tavian, L Van Weelderen, R CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-92-14-CR 239220 LHC-Note-191 239220 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1992-00-00 CERN-ARCH-AT-1-069 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014494ARC ARC011201 DELETED 65309 SzGeCERN 20170728120901.0 eng Accelerator Technology Division, AT Precision heat inleak measurements on cryogenic components at 80 K, 4.2 K and 1.8 K CERN 1992-06-00 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Danielsson, H Lebrun, P Rieubland, J M CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-92-13-CR 239216 LHC-Note-190 239216 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1992-00-00 CERN-ARCH-AT-1-068 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014493ARC ARC011201 DELETED 65308 SzGeCERN 20170728120901.0 eng Accelerator Technology Division, AT Investigation and qualification of thermal insulation systems between 80 K and 4.2 K CERN 1992-06-00 5 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Lebrun, P Mazzone, L Sergo, V Vullierme, B CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-92-12-CR 238919 LHC-Note-189 238919 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1992-00-00 CERN-ARCH-AT-1-067 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014492ARC ARC011201 DELETED 65300 SzGeCERN 20170728120900.0 eng Accelerator Technology Division, AT Performance of the twin-aperture dipole for the CERN LHC CERN 1992-04-00 4 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Deregel, J Genevey, P Granier, M Hagedorn, D Henrichsen, K N Jacquemin, J P Kircher, F Le Bars, J Lebrun, P Leroy, D Perin, R Vlogaert, J CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-92-04-MA 236959 CERN-AT-MA-92-04 236959 LHC-Note-179 236959 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1992-00-00 CERN-ARCH-AT-1-059 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014484ARC ARC011201 DELETED 65299 SzGeCERN 20170728120900.0 eng Accelerator Technology Division, AT Operational experience with the LEP low-beta superconducting quadrupoles CERN 1992-04-00 4 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 AT = Accelerator Technology Lebrun, P Pagano, O Taylor, T M Walckiers, L CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-92-03-MA 236963 CERN-AT-MA-92-03 236963 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1992-00-00 CERN-ARCH-AT-1-058 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014483ARC ARC011201 DELETED 65292 SzGeCERN 20170728120900.0 eng Accelerator Technology Division, AT Heated two-phase flow of saturated helium II over a length of 24 m CERN 1991-10-10 14 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 CERN 10-100m CERN sink CERN stability CERN wetted area CERN response times AT = Accelerator Technology Cyvoct, A Lebrun, P Marquet, M Tavian, L Van Weelderen, R CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-91-28-CR 228162 CERN-AT-CR-91-28 228162 LHC-Note-169 228162 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1991-00-00 CERN-ARCH-AT-1-051 Permanent 01 20090526 1620 ARC01 19970514 PUBLIC 000014476ARC ARC011201 DELETED 65244 SzGeCERN 20170728120856.0 eng Accelerator Technology Division, AT Design and construction of a superfluid helium cryostat for a ten-meter long high-field superconducting dipole magnet CERN 1990-05-00 6 p Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-AT Sub-collection: AT Divisional and departmental reports Free 1.12.01 CERN NbTi CERN twin aperture AT = Accelerator Technology Granier, M Lebrun, P Mischiatti, M CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-90-03-CR 208801 CERN-AT-CR-90-03 208801 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1990-00-00 CERN-ARCH-AT-1-003 Permanent 01 20090526 1620 ARC01 19970507 PUBLIC 000014428ARC ARC011201 DELETED 65242 SzGeCERN 20201001094012.0 fre Accelerator Technology Division, AT AT Divisional Reports, 1990-1992 9 cm Paper CERN-ARCH-LHC Collection: Large Hadron Collider, LHC CERN-ARCH-LHC-1 Sub-collection: Divisional and departmental reports Free 1.12.01 DivRep-AT AT = Accelerator Technology Lebrun, P CERN. Geneva. Accelerator Technology Division (AT) CERN-AT-CR-90-01 LHC-Note-114 CERN-AT-90-01-CR 204990 CERN-AT-CR-90-02 CERN-AT-90-02-CR 206551 CERN-AT-CR-90-03 CERN-AT-90-03-CR 208801 CERN-AT-CR-90-05 CERN-AT-90-05-CR 209984 CERN-AT-VA-90-04 CERN-AT-90-04-VA 210621 CERN-AT-RF-90-06 CERN-AT-90-06-RF 210574 CERN-AT-RF-90-07 CERN-AT-90-07-RF 210575 CERN-AT-RF-90-08 CERN-AT-90-08-RF 210572 CERN-AT-VA-90-09 CERN-AT-90-09-VA 210622 CERN-AT-VA-90-10 CERN-AT-90-10-VA 210623 CERN-AT-VA-90-11 CERN-AT-90-11-VA 210624 CERN-AT-VA-90-12 CERN-AT-90-12-VA 210625 CERN-AT-MA-90-13 LHC-Note-124 CERN-AT-90-13-MA 210626 CERN-AT-DI-90-14 CERN-SL-90-60 AP CERN-AT-90-14-DI 210627 CERN-AT-DI-90-15 CERN-SL-90-59 AP CERN-AT-90-15-DI 210628 CERN-AT-CR-90-16 CERN-AT-90-16-CR 210569 CERN-AT-VA-90-17 CERN-AT-90-17-VA 210831 CERN-AT-MA-90-18 CERN-AT-90-18-MA 213829 CERN-AT-MA-90-19 LHC-Note-136 CERN-AT-90-19-MA 214451 CERN-AT-VA-90-20 CERN-AT-90-20-VA 214257 CERN-AT-VA-90-21-Rev. CERN-AT-90-21-VA-Rev. 214289 CERN-AT-MA-90-22 CLIC Note 132 CERN-AT-90-22-MA 216156 CERN-AT-RF-90-23 CERN-AT-90-23-RF 215603 CERN-AT-DI-91-01 CERN-AT-91-01-DI 218659 CERN-AT-MA-91-02 LHC-Note-141 CERN-AT-91-02-MA 219901 CERN-AT-MA-91-03 CERN-AT-91-03-MA 220511 CERN-AT-MA-91-04 LHC-Note-145 CERN-AT-91-04-MA 220513 CERN-AT-RF-91-05 CERN-AT-91-05-RF 950376 CERN-AT-RF-91-06 CERN-AT-91-06-RF 220917 CERN-AT-MA-91-07 LHC-Note-153 CERN-AT-91-07-MA 225026 CERN-AT-CR-91-08 CERN-AT-91-08-CR 224553 CERN-AT-RF-91-09 CERN-AT-91-09-RF 223731 CERN-AT-CO-91-10 CERN-AT-91-10-CO 222479 CERN-AT-MA-91-11 CERN-AT-91-11-MA 227025 CERN-AT-MA-91-12 LHC-Note-148 CERN-AT-91-12-MA 227194 227194 CERN-AT-MA-91-13 LHC-Note-168 CERN-AT-91-13-MA 227303 CERN-AT-MA-91-14 LHC-Note-163 CERN-AT-91-14-MA 227193 CERN-AT-MA-91-15 LHC-Note-162 CERN-AT-91-15-MA 227192 CERN-AT-MA-91-16 LHC-Note-161 CERN-AT-91-16-MA 227023 CERN-AT-MA-91-17 LHC-Note-160 CERN-AT-91-17-MA 227019 691922 CERN-AT-MA-91-18 LHC-Note-157 CERN-AT-91-18-MA 227173 CERN-AT-MA-91-19 LHC-Note-159 CERN-AT-91-19-MA 227174 CERN-AT-MA-91-20 LHC-Note-158 CERN-AT-91-20-MA 227175 CERN-AT-MA-91-21 LHC-Note-155 CERN-AT-91-21-MA 227176 CERN-AT-MA-91-22 LHC-Note-156 CERN-AT-91-22-MA 227177 CERN-AT-MA-91-23 CERN-AT-91-23-MA 227037 CERN-AT-MA-91-24 CERN-AT-91-24-MA 227036 CERN-AT-MA-91-25 CERN-AT-91-25-MA 227030 CERN-AT-RF-91-26 CERN-AT-91-26-RF 228541 CERN-AT-VA-91-27 CERN-AT-91-27-VA 227178 CERN-SL-91-28 BI CERN-AT-91-28-CR 228162 LHC-Note-169 CERN-AT-CR-91-28 228162 CERN-AT-RF-91-29 CERN-AT-91-29-RF 228555 CERN-AT-CO-91-30 CERN-AT-91-30-CO 228160 CERN-AT-CO-91-31 CERN-AT-91-31-CO 228539 CERN-AT-DI-91-32 CERN-AT-91-32-DI 228554 CERN-AT-92-01-DI 1500568 CERN-AT-MA-92-02 CERN-AT-92-02-MA CERN-SL-DI-92-15 CERN-SL-92-15-DI 236121 CERN-AT-MA-92-03 CERN-AT-92-03-MA 236963 CERN-AT-MA-92-04 LHC-Note-179 CERN-AT-92-04-MA 236959 CERN-AT-MA-92-05 LHC-Note-187 CERN-AT-92-05-MA 1019449 CERN-AT-92-06-DI 237599 CERN-AT-92-07-VA 247187 LHC-Note-196 CERN-AT-92-08-VA 1019453 434675 CERN-AT-92-09-VA 247196 CERN-AT-MA-92-10 LHC-Note-188 CERN-AT-92-10-MA 1019450 LHC-Note-197 CERN-AT-92-11-VA 1019454 691988 LHC-Note-189 CERN-AT-92-12-CR 238919 LHC-Note-190 CERN-AT-92-13-CR 239216 LHC-Note-191 CERN-AT-92-14-CR 239220 CERN-AT-92-15-CR 239465 CERN-AT-92-16-CR 241861 LHC-Note-193 CERN-AT-92-17-MA 1019451 CERN-AT-92-18-CR-MA 240427 CERN-AT-MA-92-19 LHC-Note-195 CERN-AT-92-19-MA 240954 CERN-AT-92-20-DI 240754 LHC-Note-199 CERN-AT-92-21-MA 243984 LHC-Note-200 CERN-AT-92-22-MA 1019456 691824 LHC-Note-201 CERN-AT-92-23-MA 243988 LHC-Note-202 CERN-AT-92-24-MA 243990 LHC-Note-203 CERN-AT-92-25-MA 243992 LHC-Note-204 CERN-AT-92-26-MA 243996 LHC-Note-205 CERN-AT-92-27-MA 243999 LHC-Note-206 CERN-AT-92-28-MA 244001 LHC-Note-207 CERN-AT-92-29-MA 244003 CERN-AT-DI-92-30 LHC-Note-210 CERN-AT-92-30-DI 242145 CERN-AT-92-31-IC-(FRE) 243345 CERN-AT-92-32-CR 242404 CERN-AT-92-33-VA 258361 CERN-AT-92-34-VA 247180 CERN-PS-92-58-AR CLIC Note 182 CERN-AT-92-35-DI 245504 CERN Archives. Bldg. 61-S-001 V0812 https://library.web.cern.ch/archives/CERN_archive/guide/accelerators/LHC/isalhc Description of record group 200319 1990-00-00 1992-12-31 CERN-ARCH-LHC-1-01-001 01 PUBLIC ARC011201 525104 SzGeCERN 20230531161915.0 oai:cds.cern.ch:525104 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN 10.1063/1.1472170 DOI CERCER 2281885 CERN annual report 2002-3.0378 SPIRES 4780205 Inspire 566801 CERN-LHC-2001-006-ECR eng Bézaguet, Alain-Arthur A Cryogenic High-Reynolds Turbulence Experiment at CERN 2002 Geneva CERN 2 Nov 2001 9 p paper Report Revised version number 1 submitted on 2001-11-08 11:37:57 The potential of cryogenic helium flows for studying high-Reynolds number turbulence in the laboratory has been recognised for a long time and implemented in several small-scale hydrodynamic experiments. With its large superconducting particle accelerators and detector magnets, CERN, the European Laboratory for Particle Physics, has become a major world center in helium cryogenics, with several large helium refrigerators having capacities up to 18 kW @ 4.5 K. Combining a small fraction of these resources with the expertise of three laboratories at the forefront of turbulence research, has led to the design, swift implementation, and successful operation of GReC (Grands Reynolds Cryogéniques) a large axisymmetric turbulent-jet experiment. With flow-rates up to 260 g/s of gaseous helium at ~ 5 K and atmospheric pressure, Reynolds numbers up to 107 have been achieved in a 4.6 m high, 1.4 m diameter cryostat. This paper presents the results of the first runs and describes the experimental set-up comprehensively equipped with "hot" wire micro-anemometers, acoustic scattering vorticity measurements and a large-bandwidth data acquisition system. 20011108SLAC CERN EDS SIS COSCI2002 SIS AIP_ART2005 SIS:2005 PR/LKR added CLAS1 LHC-ECR SzGeCERN Accelerators and Storage Rings ARTICLE CERN CERN LHC Dauvergne, J P Knoops, S Lebrun, P Pezzetti, M Pirotte, O Bret, J L Chabaud, B Garde, G Guttin, C Hébral, B Pietropinto, S Roche, P Barbier-Neyret, J P Baudet, C Gagne, Y Poulain, C Castaing, B Ladam, Y Vittoz, F LHC 1399-1406 AIP Conf. Proc. 613 2002 CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-2001-006-ECR http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-2001-006 Access to fulltext document http://cds.cern.ch/record/525104/files/lhc-2001-006.pdf Access to fulltext document http://cds.cern.ch/record/525104/files/lhc-2001-006.ps.gz Access to fulltext document Evelyne.Delucinge@cern.ch CERN Centre de Recherches sur les Très Basses Températures (CRTBT), UJF-INPG-CNRS, Grenoble Laboratoire des Ecoulements Géophysiques et Industriels (LEGI - IMG), UJF-INPG-CNRS, Grenoble Ecole Normale Supérieure (ENSL) Lyon n 200145 a2002 13 20100901 1605 CER01 20011102 484992 1399-1406 madison20010716a PUBLIC 0001 002281885CER ARTICLE ConferencePaper 506214 SzGeCERN 20251201183008.0 oai:cds.cern.ch:506214 forSciTalks cerncds:TALK AgendaMaker a034571 eng CERN. Geneva Superconducting Technology for Particle Accelerators 2001 ed. 2001 Geneva CERN 2001 720x576 4/3, 25 3916 a034571 720x576 4/3, 25 CERN Summer Student Lecture Programme 2001 CERN, Geneva, 31 Jul 2001 31 Jul 2001 a034571 14:00 CERN 2001 CERN EDS-AGE SzGeCERN XX CERN SSLP movingimages Lebrun, P speaker CERN CERN? http://agenda.cern.ch/fullAgenda.php?ida=a034571 Talk http://agenda.cern.ch/tools/SSLPdisplay.php?stdate=2001-07-01&nbweeks=7 MediaArchive /mnt/master_share/master_data/2001/a034571 Absolute master path MediaArchive /2001/a034571/a034571_en.vtt subtitle subtitle English MediaArchive /2001/a034571/a034571_fr.vtt subtitle subtitle Français MediaArchive https://lecturemedia.cern.ch/2001/a034571/a034571-posterframe-480x360-at-0-percent.jpg pngthumbnail thumbnail weblecture MediaArchive https://lecturemedia.cern.ch/2001/a034571/a034571-0600-kbps-maxH-360-25-fps-audio-128-kbps-48-kHz-stereo.mp4 video/mp4 Content: presenter. Resolution: 160x128. Baudrate: 0600 Philippe.Lebrun@cern.ch CERN n 200349 20070731 2048 CER01 20010629 508641 cern20010701 PUBLIC 002261527CER https://videos.cern.ch/legacy/record/506214 Indico SL MIGRATED 449274 SzGeCERN 20230531152205.0 oai:cds.cern.ch:449274 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 2200250 CERN annual report 2001-3.2300 SPIRES 4451163 Inspire 532377 LHC-Project-Report-391 eng CERN-LHC-Project-Report-391 Claudet, S Towards Cost-To-Performance Optimisation of Large Superfluid Helium Refrigeration Systems 2000 Geneva CERN 27 Jun 2000 5 p paper The field range of superconducting devices may be extended by lowering their operating temperature, using superfluid helium refrigeration systems which have to deliver working pressures down to 1.6 kPa. The corresponding pressure ratio can be produced by integral cold compression or using a combination of cold compressors in series together with "warm" compressors at room temperature. The optimisation of such a system depends on the number, arrangement and characteristics of cold and warm machines as well as on the operating scenario and turndown capability. The aim of this paper is to compare relative investment and operating costs of different superfluid helium cryogenic systems, with the aim of optimising their cost-to-performance ratio within the constraints of their operating scenario. CERN EDS 20000803SLAC SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Lebrun, P Tavian, L LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-391 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-project-report-391 Access to fulltext document http://cds.cern.ch/record/449274/files/lhc-project-report-391.pdf Access to fulltext document http://cds.cern.ch/record/449274/files/lhc-project-report-391.ps.gz Access to fulltext document Evelyne.Delucinge@cern.ch CERN n 200031 a2001 13 20100723 1335 CER01 20000728 431757 203-206 mumbai20000221 PUBLIC 002200250CER ARTICLE ConferencePaper 0001 385851 SzGeCERN 20260409173234.0 oai:cds.cern.ch:385851 cerncds:FULLTEXT forSciTalks cerncds:TALK cerncds:TALK:FULLTEXT cerncds:MEMORIAV CERCER 0311912 CERN annual report 2001-3.2198 eng review eng CERN-VIDEO-C-451-A CERN-VIDEO-C-451-B CERN-VIDEO-C-451-C CERN-VIDEO-C-451-D CERN-VIDEO-C-451-E Vinen, W F Superfluid helium physics and applications Geneva CERN 1999 review 1999 1999-02-08 720x576 4/3, 25 3870 CERN-VIDEO-C-451-B B 720x576 4/3, 25 CERN-VIDEO-C-451-C C 720x576 4/3, 25 CERN-VIDEO-C-451-A A 720x576 4/3, 25 CERN-VIDEO-C-451-D D 720x576 4/3, 25 CERN-VIDEO-C-451-E E 720x576 4/3, 25 Video paper A VINEN-1 Betacam Master 19990208 B VINEN-2 Betacam Master 19990209 C VINEN-3 Betacam Master 19990210 D LEBRUN-1 Betacam Master 19990211 E LEBRUN-2 Betacam Master 19990212 CERN Academic Training Lecture 365 Regular Lecture Programme The video was digitized from its original recording as part of the CERN Digital Memory project review b William Frank Vinen, Philippe Lebrun review e William Frank Vinen, Philippe Lebrun review c William Frank Vinen, Philippe Lebrun review d William Frank Vinen, Philippe Lebrun Audio present but not on all channels - b Audio present but not on all channels - High frequency interference pattern - Low RF, noisy picture - Video tracking issue - e Audio present but not on all channels - c Audio present but not on all channels - d CERN, Geneva, 8 - 12 Feb 1999 The behaviour of liquid helium is dominated by quantum effects, which give rise to superfluidity at low temperatures. An account will be given of the observed properties of the superfluid phase of liquid 4He, and of the way in which these properties can be described by a two-fluid model, supplemented by the requirement that motion of the superfluid component be irrotational with a hydrodynamic circulation that is quantized in units of h/m4. The existence of superfluidity and the quantization of circulation will be related to the presence of a Bose condensate. The description of excited states of the liquid in terms of weakly interacting thermal excitations (phonons and rotons will be discussed, and the relation between these excitations and the normal-fluid component will be explained. The existence and role of quantized vortex lines in the superfluid component will be discribed. A brief account will be included of topics of current research interest. review b A series of lectures on the physics and the technology of superfluid helium. CERN 1999 1999 review CERN review Mar2021 CERN CREATE-MARC-run20180622_170700 digitized pda CERN Digital Memory Project PICTURAE https://cds.cern.ch/record/2257246 SzGeCERN WEEK12-public S1V1: SDI Signal - Digital Betacam, Betacam SP, Betacam, Betacam SX, DVCAM, DVCPRO, DV/Mini DV b Betacam public - VISUAL INSPECTION TABLE of Betacam () true - - RTI VT 4100 of Betacam () true - - MAC-V011 of Betacam () true Audio present but not on all channels - - MANUAL QC GEN of Betacam () true - - FILE_PRESENCE of Betacam () true - - VISUAL INSPECTION TABLE timing: from 31/01/2018 14:38 to 31/01/2018 14:38 - - RTI VT 4100 timing: from 31/01/2018 14:38 to 31/01/2018 15:14 - - MAC-V011 timing: from 31/01/2018 15:14 to 31/01/2018 16:11 - - MANUAL QC GEN timing: from 01/02/2018 22:19 to 01/02/2018 22:19 - - FILE_PRESENCE timing: from 01/02/2018 22:19 to 01/02/2018 22:19 - 20180201 CREATE-MARC-run20180622_170732 digitized pda CERN Digital Memory Project PICTURAE https://cds.cern.ch/record/2257246 SzGeCERN WEEK13-public S1V1: SDI Signal - Digital Betacam, Betacam SP, Betacam, Betacam SX, DVCAM, DVCPRO, DV/Mini DV e Betacam public - VISUAL INSPECTION TABLE of Betacam () true - - RTI VT 4100 of Betacam () true - - MAC-V014 of Betacam () false Audio present but not on all channels | Low RF, noisy picture | Video tracking issue | High frequency interference pattern - - OVEN of Betacam () true - - RTI VT 4100 of Betacam () true - - MAC-V013 of Betacam () false Video tracking issue | Low RF, noisy picture - - OVEN of Betacam () true - - RTI VT 4100 of Betacam () true - - MAC-V016 of Betacam () true Low RF, noisy picture | Audio present but not on all channels - - MANUAL QC GEN of Betacam () true - - FILE_PRESENCE of Betacam () true - - VISUAL INSPECTION TABLE timing: from 31/01/2018 15:29 to 31/01/2018 15:29 - - RTI VT 4100 timing: from 31/01/2018 15:29 to 31/01/2018 15:45 - - MAC-V014 timing: from 31/01/2018 15:45 to 31/01/2018 16:33 - - OVEN timing: from 01/02/2018 10:26 to 05/02/2018 11:50 - - RTI VT 4100 timing: from 12/02/2018 10:22 to 12/02/2018 12:18 - - MAC-V013 timing: from 12/02/2018 12:20 to 12/02/2018 12:26 - - OVEN timing: from 16/02/2018 10:38 to 19/02/2018 08:11 - - RTI VT 4100 timing: from 19/02/2018 10:41 to 19/02/2018 10:51 - - MAC-V016 timing: from 20/02/2018 08:26 to 20/02/2018 09:36 - - MANUAL QC GEN timing: from 20/02/2018 23:38 to 20/02/2018 23:38 - - FILE_PRESENCE timing: from 20/02/2018 23:38 to 20/02/2018 23:38 - 20180220 CREATE-MARC-run20180622_170916 digitized pda CERN Digital Memory Project PICTURAE https://cds.cern.ch/record/2257246 SzGeCERN WEEK16-public S1V1: SDI Signal - Digital Betacam, Betacam SP, Betacam, Betacam SX, DVCAM, DVCPRO, DV/Mini DV c Betacam public - VISUAL INSPECTION TABLE of Betacam () true - - RTI VT 4100 of Betacam () true - - MAC-V011 of Betacam () true Audio present but not on all channels - - MANUAL QC GEN of Betacam () true - - FILE_PRESENCE of Betacam () true - - VISUAL INSPECTION TABLE timing: from 31/01/2018 16:11 to 31/01/2018 16:11 - - RTI VT 4100 timing: from 31/01/2018 16:12 to 31/01/2018 16:19 - - MAC-V011 timing: from 01/02/2018 08:04 to 01/02/2018 09:36 - - MANUAL QC GEN timing: from 01/02/2018 22:55 to 01/02/2018 22:55 - - FILE_PRESENCE timing: from 01/02/2018 22:55 to 01/02/2018 22:55 - 20180201 CREATE-MARC-run20180622_170916 digitized pda CERN Digital Memory Project PICTURAE https://cds.cern.ch/record/2257246 SzGeCERN WEEK16-public S1V1: SDI Signal - Digital Betacam, Betacam SP, Betacam, Betacam SX, DVCAM, DVCPRO, DV/Mini DV d Betacam public - VISUAL INSPECTION TABLE of Betacam () true - - RTI VT 4100 of Betacam () true - - MAC-V012 of Betacam () true Audio present but not on all channels - - MANUAL QC GEN of Betacam () true - - FILE_PRESENCE of Betacam () true - - VISUAL INSPECTION TABLE timing: from 31/01/2018 16:04 to 31/01/2018 16:04 - - RTI VT 4100 timing: from 31/01/2018 16:04 to 31/01/2018 16:11 - - MAC-V012 timing: from 01/02/2018 08:03 to 01/02/2018 09:36 - - MANUAL QC GEN timing: from 01/02/2018 22:38 to 01/02/2018 22:38 - - FILE_PRESENCE timing: from 01/02/2018 22:38 to 01/02/2018 22:38 - 20180201 pda SzGeCERN digitized 202103 CERN Digital Memory Project OPEN-REFINE Project Mar2021 New HDD PICTURAE https://cds.cern.ch/record/2257246 Betacam mirror/Week23 S1V1 56,36 minutes Audio present but not on all channels a curation Decembre 2020 a -Audio: TRUE -Video Signal: TRUE -Multiple: FALSE -Relevant to CERN: TRUE -Duplicate: FALSE review b Une série de conférences sur la physique et la technologie de l'hélium superfluide. review Conference Speech review Mar2021 a Conference Speech VHS video VIDEO-MF SzGeCERN Other Fields of Engineering review Inside the lab review Mar2021 Portraits of science review b academic training review b superfluidity review b helium review Mar2021 a Academic training lecture review Mar2021 a Superfluidity review Mar2021 a Helium ACAD CERN movingimages review reviewed AUTHOR|(CDS)2067931 #BEARD# Lebrun, Philippe LHC CERN. Geneva CERN Depot 1, bldg. 2 (DE1) 1999 Vinen CERN Central Library 1999 Vinen CERN Depot 2, bldg. 2 (DE2) 1999 Lebrun CERN Central Library 365 CERN Central Library Acad. Train. 365 A 60 Z0321 CM-A00000326 B 60 Z0321 CM-A00000326 C 60 Z0321 CM-A00000326 D 60 Z0321 CM-A00000326 E 60 Z0321 CM-A00000326 http://preprints.cern.ch/cgi-bin/setlink?base=AT&categ=Academic_Training&id=AT00000609 Transparencies, pt.1 http://preprints.cern.ch/cgi-bin/setlink?base=AT&categ=Academic_Training&id=AT00000610 Transparencies, pt.2 http://cds.cern.ch/record/385851/files/AT00000609.tif Transparencies, pt.1 http://cds.cern.ch/record/385851/files/AT00000610.tif Transparencies, pt.2 EOS MP4 https://cern.ch/digital-memory/media-archive/video/open/mp4/385851-b.mp4 534093853 Video-385851-b mp4 video format (640x360) (PICTURAE:MD5)ac_S1V1_385851-b.mp4;33e61cee04b0bd01cdc221522a645c94 b EOS MP4 https://cern.ch/digital-memory/media-archive/video/open/mp4/385851-e.mp4 629952615 Video-385851-e mp4 video format (640x360) (PICTURAE:MD5)ac_S1V1_385851-e.mp4;07e664831dfb406663a1f4a5a9520dfe e EOS MP4 https://cern.ch/digital-memory/media-archive/video/open/mp4/385851-c.mp4 602679746 Video-385851-c mp4 video format (640x360) (PICTURAE:MD5)ac_S1V1_385851-c.mp4;dcfecc1d04f8bd7428f303440bd19190 c EOS MP4 https://cern.ch/digital-memory/media-archive/video/open/mp4/385851-d.mp4 631376512 Video-385851-d mp4 video format (640x360) (PICTURAE:MD5)ac_S1V1_385851-d.mp4;d8f69e081ff620c760b1aaafe7dfe5e4 d MediaArchive /mnt/master_share/master_data/1999/CERN-VIDEO-C-451-B Absolute master path MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-B/CERN-VIDEO-C-451-B-posterframe-480x360-at-0-percent.jpg pngthumbnail thumbnail weblecture MediaArchive /mnt/master_share/master_data/1999/CERN-VIDEO-C-451-A Absolute master path MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-A/CERN-VIDEO-C-451-A-posterframe-480x360-at-0-percent.jpg pngthumbnail thumbnail weblecture MediaArchive /mnt/master_share/master_data/1999/CERN-VIDEO-C-451-D Absolute master path MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-D/CERN-VIDEO-C-451-D-posterframe-480x360-at-0-percent.jpg pngthumbnail thumbnail weblecture MediaArchive /mnt/master_share/master_data/1999/CERN-VIDEO-C-451-C Absolute master path MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-C/CERN-VIDEO-C-451-C-posterframe-480x360-at-0-percent.jpg pngthumbnail thumbnail weblecture MediaArchive /mnt/master_share/master_data/1999/CERN-VIDEO-C-451-E Absolute master path MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-E/CERN-VIDEO-C-451-E-posterframe-480x360-at-0-percent.jpg pngthumbnail thumbnail weblecture MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-B/CERN-VIDEO-C-451-B-0600-kbps-maxH-360-25-fps-audio-128-kbps-48-kHz-stereo.mp4 video/mp4 Content: presenter. Resolution: 720x352. Baudrate: VIDEO MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-A/CERN-VIDEO-C-451-A-0600-kbps-maxH-360-25-fps-audio-128-kbps-48-kHz-stereo.mp4 video/mp4 Content: presenter. Resolution: 720x352. Baudrate: VIDEO MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-D/CERN-VIDEO-C-451-D-0600-kbps-maxH-360-25-fps-audio-128-kbps-48-kHz-stereo.mp4 video/mp4 Content: presenter. Resolution: 704x352. Baudrate: VIDEO MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-C/CERN-VIDEO-C-451-C-0600-kbps-maxH-360-25-fps-audio-128-kbps-48-kHz-stereo.mp4 video/mp4 Content: presenter. Resolution: 720x352. Baudrate: VIDEO MediaArchive https://lecturemedia.cern.ch/1999/CERN-VIDEO-C-451-E/CERN-VIDEO-C-451-E-0600-kbps-maxH-360-25-fps-audio-128-kbps-48-kHz-stereo.mp4 video/mp4 Content: presenter. Resolution: 704x352. Baudrate: VIDEO n 200142 20081215 1639 CER01 19990428 Marina Savino Curator 2021-03-01 523465 cern980901 PUBLIC review PUBLIC review PUBLIC a 0009 000311912CER https://videos.cern.ch/legacy/record/385851 VIDEOARC Indico ACAD MIGRATED 370927 SzGeCERN 20170609234848.0 SIS INSP98 6028411 CLAS1 Lebrun, P Serio, L Van Weelderen, R CERN annual report 98-1619 CERCER 0296224 INSPEC 6028411 CERN LHC XX ARTICLE CERN SzGeCERN Accelerators and Storage Rings n 199800 a1998 533-543 5 Cryogenics 38 1998 LHC Thermohydraulics of quenches and helium recovery in the LHC prototype magnet strings DOI 10.1016/S0011-2275(98)00015-0 oai:cds.cern.ch:370927 cerncds:CERN 1998 Chorowski, M eng CERN 13 20090915 1901 CER01 19981113 PUBLIC 000296224CER 341094 ARTICLE DELETED 11708 SzGeCERN LHC-PROJECT-NOTE-177 eng Chorowski, M Preliminary risk analysis of the LHC cryogenic system 12 Jan 1998 69 p The objective of the study is to identify all risks to personnel, equipment or environment resulting from cryogenic failures that may accidentally occur within the cryogenic system of Large Hadron Collider in any phase of the machine operation, and that could not be eliminated by design. We then formulate recommendations concerning lines of preventive and corrective defence, as well as further, more detailed studies. Safety, Risk, Cryogenics, Analysis CERN Safety, Risk, Cryogenics, Analysis Lebrun, Ph Riddone, G rachelle.decreuse@cern.ch http://preprints.cern.ch/cgi-bin/setlink?base=lhcnot&categ=Note&id=project-note-177 Access to fulltext document 0000274LHCLHC n 199903 1998 29 20040219 1416 WAI01 19990121 PUBLIC 000006040WAI DUMMY DELETED 11640 SzGeCERN LHC-Project-Note-106 eng Chorowski, M A Proposal For Simplification of the LHC Cryogenic Scheme 15 Sep 1997 R. Decreuse - LHC Division cryogenics CERN cryogenics cooling loop CERN cooling loop components CERN components spacing CERN spacing cost saving CERN cost saving Hilbert, B Lebrun, P Serio, L Tavian, L Wagner, U van Weelderen, R LHC-ACR http://preprints.cern.ch/cgi-bin/setlink?base=lhcnot&categ=Note&id=project-note-106 0000204LHCLHC n 199813 1997 29 20040219 1416 WAI01 19980324 PUBLIC 000005972WAI DUMMY DELETED 11626 SzGeCERN LHC-Project-Note-92 eng Lebrun, P Estimation Du Cožt Marginal De L'Žnergie ConsommŽe Par La CryogŽnie Du LHC 06 Jun 1997 Rachelle Decreuse - LHC Division Cožt marginal CERN Cožt marginal Žnergie CERN Žnergie cryogŽnie CERN cryogŽnie LHC-ACR http://preprints.cern.ch/cgi-bin/setlink?base=lhcnot&categ=Note&id=project-note-92 0000190LHCLHC n 199813 1997 29 20040219 1416 WAI01 19980324 PUBLIC 000005958WAI DUMMY DELETED 517571 SzGeCERN 20230531152347.0 oai:cds.cern.ch:517571 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN 10.1063/1.1471999 DOI CERCER 2273564 CERN annual report 2002-3.0040 SPIRES 4739280 Inspire 563757 LHC-Project-Report-499 eng CERN-LHC-Project-Report-499 Lebrun, P Advanced Superconducting Technology for Global Science The Large Hadron Collider at CERN 2002 Geneva CERN 27 Aug 2001 13 p paper The Large Hadron Collider (LHC), presently in construction at CERN, the European Organisation for Nuclear Research near Geneva (Switzerland), will be, upon its completion in 2005 and for the next twenty years, the most advanced research instrument of the world's high-energy physics community, providing access to the energy frontier above 1 TeV per elementary constituent. Re-using the 26.7-km circumference tunnel and infrastructure of the past LEP electron-positon collider, operated until 2000, the LHC will make use of advanced superconducting technology - high-field Nb-Ti superconducting magnets operated in superfluid helium and a cryogenic ultra-high vacuum system - to bring into collision intense beams of protons and ions at unprecedented values of center-of-mass energy and luminosity (14 TeV and 1034 cm-2.s-1, respectively with protons). After some ten years of focussed R&D, the LHC components are presently series-built in industry and procured through world-wide collaboration. After briefly recalling the physics goals, performance challenges and design choices of the machine, we describe its major technical systems, with particular emphasis on relevant advances in the key technologies of superconductivity and cryogenics, and report on its construction progress. 20010917SLAC CERN EDS SIS COSCI2002 SIS AIP_ART2005 SIS:2005 PR/LKR added SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable LHC 3-14 AIP Conf. Proc. 613 2002 CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-499 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-project-report-499 Access to fulltext document http://cds.cern.ch/record/517571/files/lhc-project-report-499.pdf Access to fulltext document http://cds.cern.ch/record/517571/files/lhc-project-report-499.ps.gz Access to fulltext document Evelyne.Delucinge@cern.ch CERN n 200138 a2002 13 20100901 1605 CER01 20010914 484992 3-14 madison20010716a PUBLIC 0001 002273564CER ARTICLE ConferencePaper 473537 SzGeCERN 20230531152124.0 oai:cds.cern.ch:473537 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 2226978 SPIRES 4501535 Inspire 536867 LHC-Project-Report-441 eng CERN-LHC-Project-Report-441 Lebrun, P Superconductivity and Cryogenics for the Large Hadron Collider 2000 Geneva CERN 27 Oct 2000 8 p paper Key technologies to the Large Hadron Collider (LHC), the 26.7 km circumference high-energy, high-luminosity particle collider under construction at CERN, are high-field superconducting magnets and superfluid helium cryogenics. After recalling the main challenges of the project, we present the rationale for applying these technologies on an unprecedented scale and briefly indicate the status of their implementation. CERN EDS SIS ARC-PR-2007 refLHC CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-441 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-project-report-441 Access to fulltext document http://cds.cern.ch/record/473537/files/lhc-project-report-441.pdf Access to fulltext document http://cds.cern.ch/record/473537/files/lhc-project-report-441.ps.gz Access to fulltext document Evelyne.Delucinge@cern.ch CERN n 200045 11 20100723 1338 CER01 20001031 475484 beijing20001005 PUBLIC 002226978CER PREPRINT ConferencePaper 0001 428131 SzGeCERN 20180209114516.0 oai:cds.cern.ch:428131 cerncds:CERN CERCER 2177440 INSPEC 6503649 eng Saji, N A one kPa centrifugal cold compressor for the 1.8 K helium refrigeration system of LHC 1998 CERN placed an order for a cold compressor prototype (CCP) with IHI for the LHC project. The CCP is supported by the oil-free magnetic bearings, driven by an induction motor. The compressor has the characteristics of high efficiency and wide operation range, thanks to the optimum design for the impeller and diffuser. The result of the performance tests at CERN showed that static heat in-leaks could be controlled at approx. 7.3 W, and an adiabatic efficiency is 75at a nominal flow of 18 g's with suction temperature of 4.4 K and suction pressure of 1 kPa. (4 refs). SIS INSP2000 6503649 SzGeCERN Engineering ARTICLE CERN INSPEC A2920L (Synchrotrons) INSPEC A0720M (Cryogenics) INSPEC accelerator-magnets INSPEC colliding-beam-accelerators INSPEC compressors INSPEC heat-losses INSPEC low-temperature-techniques INSPEC magnetic-bearings INSPEC refrigeration INSPEC synchrotrons Asakura, H Yoshinaga, S Itoh, K Nogaku, T Bézaguet, Alain-Arthur Casas-Cubillos, J Lebrun, P Tavian, L LHC Ishikawajima-Harima Heavy Ind Co Ltd h 200052 a2000 13 20081025 1407 CER01 20000224 361243 295-8 bournemouth980714 PUBLIC 002177440CER ARTICLE ConferencePaper 433552 SzGeCERN 20230531152327.0 oai:cds.cern.ch:433552 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 2183097 INSPEC 7308216 SPIRES 4390717 Inspire 527496 LHC-Project-Report-374 eng CERN-LHC-Project-Report-374 Lebrun, P The Large Hadron Collider, A Megascience Project 2001 Geneva CERN 5 Apr 2000 9 p paper The Large Hadron Collider (LHC) will be the next particle accelerator built to serve the world's high-energy physics community at CERN, the European Organisation for Nuclear Research. Reusing the 26.7-km circumference tunnel and infrastructure of the existing LEP collider, the LHC will make use of advanced technology - high-field superconducting magnets operated in superfluid helium - to push the energy frontier up by an order of magnitude, while remaining economically feasible. The LHC demonstrates on a grand scale several typical features of megascience projects, such as the need for international funding, world-wide co-operation and integration in the local environment, which we review in the following. 7308216 20000410SLAC CERN EDS SIS INSP2002 SIS:2002 PR/LKR added SIS:2005 PR/LKR added SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable INSPEC A2920D (Storage rings) INSPEC A2920L (Synchrotrons) INSPEC B7410 (Particle accelerators) INSPEC B7410B (Particle beam handling and diagnostics) INSPEC B3240E (Superconducting coils and magnets) INSPEC accelerator-magnets INSPEC colliding-beam-accelerators INSPEC proton-accelerators INSPEC storage-rings INSPEC superconducting-magnets INSPEC synchrotrons LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-374 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-project-report-374 Access to fulltext document http://cds.cern.ch/record/433552/files/lhc-project-report-374.pdf Access to fulltext document http://cds.cern.ch/record/433552/files/lhc-project-report-374.ps.gz Access to fulltext document evelyne.delucinge@cern.ch CERN n 200015 y2005 13 20100901 1605 CER01 20000406 433820 11-20 erice991019 PUBLIC 002183097CER ARTICLE ConferencePaper 0001 411139 SzGeCERN 20230531152339.0 oai:cds.cern.ch:411139 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 0338633 SPIRES 4265858 Inspire 511298 LHC-Project-Report-338 eng CERN-LHC-Project-Report-338 Lebrun, P Cryogenics for the Large Hadron Collider 1999 ed. 1999 Geneva CERN 1 Dec 1999 8 p paper The Large Hadron Collider (LHC), a 26.7 km circumference superconducting accelerator equipped with high-field magnets operating in superfluid helium below 1.9 K, has now fully entered construction at CERN, the European Laboratory for Particle Physics. The heart of the LHC cryogenic system is the quasi-isothermal magnet cooling scheme, in which flowing two-phase saturated superfluid helium removes the heat load from the 36'000 ton cold mass, immersed in some 400 m3 static pressurised superfluid helium. The LHC also makes use of supercritical helium for non-isothermal cooling of the beam screens which intercept most of the dynamic heat loads at higher temperature. Although not used in normal operation, liquid nitrogen will provide the source of refrigeration for precooling the machine. Refrigeration for the LHC is produced in eight large refrigerators, each with an equivalent capacity of about 18 kW at 4.5 K, completed by 1.8 K refrigeration units making use of several stages of hydrodynamic cold compressors. The cryogenic fluids are distributed to the cryomagnet strings by a compound cryogenic distribution line circling the tunnel. Procurement contracts for the major components of the LHC cryogenic system have been adjudicated to industry, and their progress will be briefly reported. Besides construction proper, the study and development of cryogenics for the LHC has resulted in salient advances in several fields of cryogenic engineering, which we shall also review. CERN EDS 991208SLAC SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT ARTICLE CERN LHC Not applicable LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-338 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-Project-Report-338 Access to fulltext document http://cds.cern.ch/record/411139/files/lhc-project-report-338.pdf Access to fulltext document http://cds.cern.ch/record/411139/files/lhc-project-report-338.ps.gz Access to fulltext document evelyne.delucinge@cern.ch CERN n 199949 13 20100729 1030 CER01 19991207 408523 1500-1506 tallahassee990926 PUBLIC 0001 000338633CER ARTICLE ConferencePaper 410385 SzGeCERN 20230531152146.0 oai:cds.cern.ch:410385 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN SPIRES 4265980 Inspire 511311 LHC-Project-Report-324 eng CERN-LHC-Project-Report-324 Chorowski, M Preliminary Risk Analysis of the LHC Cryogenic System (CERN-LHC-Project-Report-324) 1999 Geneva CERN 1 Dec 1999 9 p paper The Large Hadron Collider (LHC), presently under construction at CERN, will require a helium cryogenic system unprecedented in size and capacity, with more than 1600 superconducting magnets operating in superfluid helium and a total inventory of almost 100 tonnes of helium. The objective of the Preliminary Risk Analysis (PRA) is to identify all risks to personnel, equipment or environment resulting from failures that may accidentally occur within the cryogenic system of LHC in any phase of the machine operation, and that could not be eliminated by design. Assigning a gravity coefficient and one analyzing physical processes that will follow any of the recognised failure modes allows to single out worst case scenarios. Recommendations concerning lines of preventive and corrective defence, as well as for further detailed studies, are formulated. CERN EDS 991206SLAC SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable Lebrun, P Riddone, G LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-324 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-Project-Report-324 Access to fulltext document http://cds.cern.ch/record/410385/files/lhc-project-report-324.pdf Access to fulltext document http://cds.cern.ch/record/410385/files/lhc-project-report-324.ps.gz Access to fulltext document evelyne.delucinge@cern.ch CERN Wroclaw Univ. Technol. n 199949 11 20100728 1107 CER01 19991202 368722 montreal990712 PUBLIC 0001 000337640CER PREPRINT ConferencePaper 410378 SzGeCERN 20230531152208.0 oai:cds.cern.ch:410378 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 0337633 SPIRES 4266056 Inspire 511318 LHC-Project-Report-317 eng CERN-LHC-Project-Report-317 Claudet, S Economics of Large Helium Cryogenic Systems experience from Recent Projects at CERN 1999 Geneva CERN 1 Dec 1999 9 p paper Large projects based on applied superconductivity, such as particle accelerators, tokamaks or SMES, require powerful and complex helium cryogenic systems, the cost of which represents a significant, if not dominant fraction of the total capital and operational expenditure. It is therefore important to establish guidelines and scaling laws for costing such systems, based on synthetic estimators of their size and performance. Although such data has already been published for many years, the experience recently gathered at CERN with the LEP and LHC projects, which have de facto turned the laboratory into a major world cryogenic center, can be exploited to update this information and broaden the range of application of the scaling laws. We report on the economics of 4.5 K and 1.8 K refrigeration, cryogen distribution and storage systems, and indicate paths towards their cost-to-performance optimisation. CERN EDS 991206SLAC SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable Gayet, P Lebrun, P Tavian, L Wagner, U LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-317 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-Project-Report-317 Access to fulltext document http://cds.cern.ch/record/410378/files/lhc-project-report-317.pdf Access to fulltext document http://cds.cern.ch/record/410378/files/lhc-project-report-317.ps.gz Access to fulltext document evelyne.delucinge@cern.ch CERN n 199949 11 20100723 1336 CER01 19991202 368722 montreal990712 PUBLIC 0001 000337633CER PREPRINT ConferencePaper 365289 SzGeCERN 20230531152203.0 oai:cds.cern.ch:365289 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN annual report 1999-3.0256 INSPEC 6511762 SPIRES 3828301 Inspire 475146 LHC-Project-Report-219 eng CERN-LHC-Project-Report-219 Byrns, R A The Cryogenics of the LHC Interaction Region Final Focus Superconducting Magnets 1998 Geneva CERN 31 Jul 1998 5 p paper The LHC interaction region final focus magnets will include four superconducting quadrupoles cooled with pressurized, static superfluid helium at 1.9 K. The heat absorbed in pressurized He II, which m ay be more than 10 Watts per meter due to dynamic heating from the particle beam halo, will be transported to saturated He II at 1.8 K and removed by the 16 mbar vapor. This paper discusses the concep tual design for the cryogenics of the interaction region final focus superconducting magnets and the integration of this magnet system into the overall LHC cryogenic system. SIS INSP2000 6511762 SIS:2000 PR/LKR added SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable INSPEC A2921 (Beams in particle accelerators) INSPEC A2920D (Storage rings) INSPEC A2920L (Synchrotrons) INSPEC B7410B (Particle beam handling and diagnostics) INSPEC B3240E (Superconducting coils and magnets) INSPEC accelerator-magnets INSPEC colliding-beam-accelerators INSPEC particle-beam-focusing INSPEC proton-accelerators INSPEC storage-rings INSPEC superconducting-magnets INSPEC synchrotrons Huang, Y Kerby, J S Lebrun, P Morrison, L Nicol, T H Peterson, T Trant, R Van Weelderen, R Zbasnik, J LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-219 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-219 Access to fulltext document http://cds.cern.ch/record/365289/files/lhc-project-report-219.pdf Access to fulltext document http://cds.cern.ch/record/365289/files/lhc-project-report-219.ps.gz Access to fulltext document CERN Fermilab Lawrence Berkeley National Laboratory n 199838 a1999 13 20100727 1740 CER01 19980917 361243 743-746 bournemouth980714 PUBLIC 0001 000290368CER ARTICLE ConferencePaper 365281 SzGeCERN 20230531152202.0 oai:cds.cern.ch:365281 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN annual report 1999-3.0230 INSPEC 6519568 SPIRES 3853640 Inspire 476704 LHC-Project-Report-214 eng CERN-LHC-Project-Report-214 Lebrun, P Cooldown and Warmup Studies for the Large Hadron Collider 1998 Geneva CERN 29 Jul 1998 5 p paper The Large Hadron Collider (LHC), currently under construction at CERN, will make use of superconducting magnets operating in superfluid helium below 2 K. The LHC ring is divided in 8 sectors, each of them cooled by a refrigerator of 18 kW at 4.5 K equivalent cooling power. For the cooldown and warmup of a 3.3 km long LHC sector, the flow available above 80 K per refrigerator is 770 g/s and the cor responding capacity is 600 kW. This paper presents the results of cooldown and warmup simulations, as concerns time delays, temperature difference across magnets, available power and flow-rates, and estimates of energy and liquid nitrogen consumption. SIS INSP2000 6519568 SIS:2000 PR/LKR added SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable INSPEC A2921 (Beams in particle accelerators) INSPEC A2920L (Synchrotrons) INSPEC A2920D (Storage rings) INSPEC A0720M (Cryogenics) INSPEC B7410B (Particle beam handling and diagnostics) INSPEC B3240E (Superconducting coils and magnets) INSPEC B8560 (Refrigeration and cold storage) INSPEC NI power: 1 INSPEC accelerator-magnets INSPEC colliding-beam-accelerators INSPEC cooling INSPEC low-temperature-techniques INSPEC proton-accelerators INSPEC refrigeration INSPEC storage-rings INSPEC superconducting-magnets INSPEC synchrotrons Riddone, G Tavian, L Wagner, U LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-214 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-214 Access to fulltext document http://cds.cern.ch/record/365281/files/lhc-project-report-214.pdf Access to fulltext document http://cds.cern.ch/record/365281/files/lhc-project-report-214.ps.gz Access to fulltext document CERN n 199838 a1999 13 20100727 1740 CER01 19980917 361243 813-816 bournemouth980714 PUBLIC 0001 000290360CER ARTICLE ConferencePaper 605468 SzGeCERN 20230531152316.0 oai:cds.cern.ch:605468 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 2364635 LHC-Project-Report-629 eng CERN-LHC-Project-Report-629 Lebrun, P Large Cryogenic Helium Refrigeration System for the LHC 2003 Geneva CERN 14 Feb 2003 9 p paper revised version number 1 submitted on 2003-02-19 11:44:11 In the framework of the Large Hadron Collider (LHC) project, CERN is presently building a large distributed cryogenic system to operate the high-field superconducting magnets of the 26.7 km accelerator in superfluid helium at 1.9 K. Refrigeration will be produced at several temperature levels down to 1.8 K, by eight cryogenic plants with a capacity of 18 kW @ 4.5 K (four of which recovered from the former LEP collider and suitably upgraded), feeding eight 2.4 kW @ 1.8 K refrigeration units using several stages of cold hydrodynamic compressors. After recalling the basics of LHC cryogenics, this paper gives an overview of the refrigeration system, from specification to design and production in industry, as well as status of the project. CERN EDS 20030218SLAC SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable LHC AT CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-629 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhcproj-2003-629 Access to fulltext document http://cds.cern.ch/record/605468/files/lhc-project-report-629.pdf Access to fulltext document http://cds.cern.ch/record/605468/files/lhc-project-report-629.ps.gz Access to fulltext document evelyne.delucinge@cern.ch CERN n 200308 11 20100401 2001 CER01 20030217 606015 hangzhou20030422 PUBLIC 002364635CER PREPRINT ConferencePaper 0001 364735 SzGeCERN 20230531152042.0 oai:cds.cern.ch:364735 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 0289766 SLAC 3854418 INSPEC 6495338 CERN annual report 1999-3.1008 SPIRES 3854418 Inspire 476779 LHC-Project-Report-213 eng CERN-LHC-Project-Report-213 Bézaguet, Alain-Arthur Performance Assessment of Industrial Prototype Cryogenic Helium Compressors for the Large Hadron Collider 1998 Geneva CERN 29 Jul 1998 5 p paper In order to develop the technology of large-capacity refrigeration at superfluid helium temperature, essential for the LHC project, CERN has procured from industry three prototype single-stage hydrody namic cryogenic helium compressors, based on different construction choices, and tested them in the laboratory. After recalling the common functional specification, as well as the main design features of the three machines, we present comparative performance results, and draw conclusions as concerns future full-scale machines for the LHC. SIS INSP2000 6495338 SIS:2000 PR/LKR added SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable INSPEC A2920D (Storage rings) INSPEC A0720M (Cryogenics) INSPEC A2920L (Synchrotrons) INSPEC B7410 (Particle accelerators) INSPEC colliding-beam-accelerators INSPEC compressors INSPEC proton-accelerators INSPEC refrigeration INSPEC storage-rings INSPEC synchrotrons Lebrun, P Tavian, L LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-213 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-213 Access to fulltext document http://cds.cern.ch/record/364735/files/lhc-project-report-213.pdf Access to fulltext document http://cds.cern.ch/record/364735/files/lhc-project-report-213.ps.gz Access to fulltext document CERN n 199838 a1999 13 20100723 1336 CER01 19980914 361243 145-148 bournemouth980714 PUBLIC 0001 000289766CER ARTICLE ConferencePaper 364733 SzGeCERN 20230531152042.0 oai:cds.cern.ch:364733 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 0289764 SLAC 3854400 INSPEC 6519563 CERN annual report 1999-3.1422 SPIRES 3854400 Inspire 476778 LHC-Project-Report-212 eng CERN-LHC-Project-Report-212 Hatchadourian, E Supercritical Helium Cooling of the LHC Beam Screens 1998 Geneva CERN 29 Jul 1998 5 p paper The cold mass of the LHC superconducting magnets, operating in pressurised superfluid helium at 1.9 K, must be shielded from the dynamic heat loads induced by the circulating particle beams, by means of beam screens maintained at higher temperature. The beam screens are cooled between 5 and 20 K by forced flow of weakly supercritical helium, a solution which avoids two-phase flow in the long, narr ow cooling channels, but still presents a potential risk of thermohydraulic instabilities. This problem has been studied by theoretical modelling and experiments performed on a full-scale dedicated te st loop. SIS INSP2000 6519563 SIS:2000 PR/LKR added SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable INSPEC A2921 (Beams in particle accelerators) INSPEC A2920L (Synchrotrons) INSPEC A2920D (Storage rings) INSPEC A0720M (Cryogenics) INSPEC A6740H (Hydrodynamics in specific geometries, flow in narrow channels (liquid helium-4)) INSPEC CI He el INSPEC NI temperature: 1 INSPEC accelerator-magnets INSPEC colliding-beam-accelerators INSPEC cooling INSPEC low-temperature-techniques INSPEC proton-accelerators INSPEC storage-rings INSPEC superconducting-magnets INSPEC superfluid-helium-4 INSPEC synchrotrons Lebrun, P Tavian, L LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-212 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-212 Access to fulltext document http://cds.cern.ch/record/364733/files/lhc-project-report-212.pdf Access to fulltext document http://cds.cern.ch/record/364733/files/lhc-project-report-212.ps.gz Access to fulltext document CERN Centre de Recherches sur les très basses températures, CNRS, Grenoble n 199838 a1999 13 20100723 1336 CER01 19980914 361243 793-796 bournemouth980714 PUBLIC 0001 000289764CER ARTICLE ConferencePaper 364732 SzGeCERN 20230531152042.0 oai:cds.cern.ch:364732 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 0289763 SLAC 3854396 SPIRES 3854396 Inspire 476777 LHC-Project-Report-211 eng CERN-LHC-Project-Report-211 Lebrun, P Advances in Cryogenics at the Large Hadron Collider 1998 Geneva CERN 29 Jul 1998 8 p paper After a decade of intensive R&D in the key technologies of high-field superconducting accelerator magnets and superfluid helium cryogenics, the Large Hadron Collider (LHC) has now fully entered its co nstruction phase, with the adjudication of major procurement contracts to industry. As concerns cryogenic engineering, this R&D program has resulted in significant developments in several fields, amon g which thermo-hydraulics of two-phase saturated superfluid helium, efficient cycles and machinery for large-capacity refrigeration at 1.8 K, insulation techniques for series-produced cryostats and mu lti-kilometre long distribution lines, large-current leads using high-temperature superconductors, industrial precision thermometry below 4 K, and novel control techniques applied to strongly non-line ar processes. We review the most salient advances in these domains. SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable LHC C98-07-14 CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-211 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-211 Access to fulltext document http://cds.cern.ch/record/364732/files/lhc-project-report-211.pdf Access to fulltext document http://cds.cern.ch/record/364732/files/lhc-project-report-211.ps.gz Access to fulltext document CERN n 199838 11 20100723 1336 CER01 19980914 PUBLIC 0001 000289763CER PREPRINT ConferencePaper 341094 SzGeCERN 20230531152255.0 oai:cds.cern.ch:341094 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN DOI 10.1016/S0011-2275(98)00015-0 CERCER 0264891 SLAC 3679233 SPIRES 3679233 Inspire 453116 CERN annual report 98-1619 INSPEC 6028411 LHC-Project-Report-154 eng CERN-LHC-Project-Report-154 Chorowski, M CERN Thermohydraulics of Quenches and Helium Recovery in the LHC Magnet Strings 1997 Geneva CERN 17 Nov 1997 20 p paper In preparation for the Large Hadron Collider project, a 42.5 m-long prototype superconducting magnet string, representing a half-cell of the machine lattice, has been built and operated. A series of tests was performed to assess the thermohydraulics of resistive transitions (quenches) of the superconducting magnets. These measurements provide the necessary foundation for describing the observed evolution of the helium in the cold mass and formulating a mathematical model based on energy conservation. The evolution of helium after a quench simulated with the model reproduces the observations. We then extend the simulations to a full LHC cell, and finally analyse the recovery of helium discharged from the cold mass. SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT ARTICLE CERN LHC Not applicable Lebrun, P CERN Serio, L CERN Van Weelderen, R CERN LHC 533-543 5 Cryogenics 38 C97-07-23.1 1998 CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-154 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-154 Access to fulltext document http://cds.cern.ch/record/341094/files/lhc-project-report-154.pdf Access to fulltext document http://cds.cern.ch/record/341094/files/lhc-project-report-154.ps.gz Access to fulltext document CERN n 199751 13 20100803 1411 CER01 19971218 341097 533-543 sanfrancisco970723 PUBLIC 000264891CER ARTICLE ConferencePaper 370927 0001 340506 SzGeCERN 20230531152138.0 oai:cds.cern.ch:340506 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN 10.1007/978-1-4757-9047-4_77 DOI CERN annual report 98-1713 CERCER 0264294 SLAC 3667375 SPIRES 3667375 Inspire 452217 LHC-Project-Report-161 eng CERN-LHC-Project-Report-161 Decker, L Operational Experience with a Cryogenic Axial-Centrifugal Compressor 1998 Geneva CERN 5 Dec 1997 4 p paper The Large Hadron Collider (LHC), presently under construction at CERN, requires large refrigeration capacity at 1.8 K. Compression of gaseous helium at cryogenic temperatures is therefore inevitable. Together with subcontractors, Linde Kryotechnik has developed a prototype machine. This unit is based on a cryogenic axial-centrifugal compressor, running on ceramic ball bearings and driven by a variable-frequency electrical motor operating at ambient temperature. Integrated in a test facility for superconducting magnets the machine has been commissioned without major problems and successfully gone through the acceptance test in autumn 1995. Subsequent steps were initiated to improve efficiency of this prototype. This paper describes operating experience gained so far and reports on measured performance prior to and after constructional modifications. SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Kündig, A Löhlein, K Purtschert, W Ziegler, B L Lebrun, P Tavian, L Brunovsky, I Tucek, L LHC 637-641 Adv. Cryog. Eng., A 43 1998 CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-161 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-161 Access to fulltext document http://cds.cern.ch/record/340506/files/lhc-project-report-161.pdf Access to fulltext document http://cds.cern.ch/record/340506/files/lhc-project-report-161.ps.gz Access to fulltext document Linde Kryotechnik Pfungen, Switzerland CERN PBS Velka Bites, Czech Republich n 199750 a1998 13 20100729 1035 CER01 19971211 PUBLIC 0001 000264294CER ARTICLE 336315 SzGeCERN 20230531152123.0 oai:cds.cern.ch:336315 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN 10.1007/978-1-4757-9047-4_50 DOI CERN annual report 98-2156 CERCER 0259974 SLAC 3641953 SPIRES 3641953 Inspire 449881 LHC-Project-Report-144 eng CERN-LHC-Project-Report-144 Lebrun, P Cooling Strings of Superconducting Devices below 2 K the Helium II Bayonet Heat Exchanger 1998 Geneva CERN 29 Sep 1997 9 p paper High-energy particle accelerators and colliders contain long strings of superconducting devices - acceleration RF cavities and magnets - operating at high field, which may require cooling in helium II below 2 K. In order to maintain adequate operating conditions, the applied or generated heat loads must be extracted and transported with minimum temperature difference. Conventional cooling schemes based on conductive or convective heat transport in pressurized helium II very soon reach their intrinsic limits of thermal impedance over extended lengths. We present the concept of helium II bayonet heat exchanger, which has been developed at CERN for the magnet cooling scheme of the Large Hadron Collider (LHC), and describe its specific advantages as a slim, quasi-isothermal heat sink. Experimental results obtained on several test set-ups, and a prototype magnet string have permitted to validate its performance and sizing rules, for transporting linear heat loads in the W.m-1 range over distances of several tens of meters. SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Serio, L Tavian, L Van Weelderen, R LHC 419-426 Adv. Cryog. Eng., A 43 1998 CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-144 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-144 Access to fulltext document http://cds.cern.ch/record/336315/files/lhc-project-report-144.pdf Access to fulltext document http://cds.cern.ch/record/336315/files/lhc-project-report-144.ps.gz Access to fulltext document CERN n 199742 a1998 13 20100723 1340 CER01 19971016 PUBLIC 0002 000259974CER ARTICLE 336314 SzGeCERN 20230531152123.0 oai:cds.cern.ch:336314 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN 10.1007/978-1-4757-9047-4_47 DOI CERN annual report 98-1618 CERCER 0259973 SLAC 3641945 SPIRES 3641945 Inspire 449880 LHC-Project-Report-143 eng CERN-LHC-Project-Report-143 Chorowski, M A Simplified Cryogenic Distribution Scheme for the Large Hadron Collider 1998 Geneva CERN 29 Sep 1997 9 p paper The Large Hadron Collider (LHC), currently under construction at CERN, will make use of superconducting magnets operating in superfluid helium below 2 K. The reference cryogenic distribution scheme was based, in each 3.3 km sector served by a cryogenic plant, on a separate cryogenic distribution line which feeds elementary cooling loops corresponding to the length of a half-cell (53 m). In order to decrease the number of active components, cryogenic modules and jumper connections between distribution line and magnet strings a simplified cryogenic scheme is now implemented, based on cooling loops corresponding to the length of a full-cell (107 m) and compatible with the LHC requirements. Performance and redundancy limitations are discussed with respect to the previous scheme and balanced against potential cost savings. SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Erdt, W K Lebrun, P Riddone, G Serio, L Tavian, L Wagner, U Van Weelderen, R LHC 395-402 Adv. Cryog. Eng., A 43 1998 CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-143 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-143 Access to fulltext document http://cds.cern.ch/record/336314/files/lhc-project-report-143.pdf Access to fulltext document http://cds.cern.ch/record/336314/files/lhc-project-report-143.ps.gz Access to fulltext document CERN n 199742 a1998 13 20100723 1340 CER01 19971016 PUBLIC 0002 000259973CER ARTICLE 330851 SzGeCERN 20230531152255.0 oai:cds.cern.ch:330851 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERCER 0254348 SLAC 3605280 SPIRES 3605280 Inspire 446868 LHC-Project-Report-125 eng CERN-LHC-Project-Report-125 Lebrun, P Superfluid helium as a technical coolant 1997 Geneva CERN 17 Jul 1997 16 p paper revised version submitted on 2004-08-19 14:20:41 The characteristics of superfluid helium as a technical coolant, which derive from its specific transport properties, are presented with particular reference to the working area in the phase diagram (saturated or pressurised helium II). We then review the principles and scaling laws of heat transport by equivalent conduction and by forced convection in pressurised helium II, thus revealing intrinsic limitations as well as technological shortcomings of these cooling methods. Once properly implemented, two-phase flow of saturated helium II presents overwhelming advantages over the previous solutions, which dictated its choice for cooling below 1.9 K the long strings of superconducting magnets in the Large Hadron Collider (LHC), a 26.7 km circumference particle collider now under construction at CERN, the European Laboratory for Particle Physics near Geneva (Switzerland). We report on recent results from the ongoing research and development programme conducted on thermohydraulics of two-phase saturated helium II flows, and on the validation of design choices for the LHC cooling system. SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-125 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-125 Access to fulltext document http://cds.cern.ch/record/330851/files/lhc-project-report-125.pdf Access to fulltext document CERN n 199731 11 20100729 1036 CER01 19970728 330764 turin970619 PUBLIC 0002 000254348CER PREPRINT ConferencePaper 326937 SzGeCERN 20230531152315.0 oai:cds.cern.ch:326937 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN annual report 98-1426 CERCER 0250321 INSPEC 5869200 SLAC 3392147 SPIRES 3392147 Inspire 421628 LHC-Project-Report-20 eng CERN-LHC-Project-Report-20 Benda, V Upgrade of the CERN Cryogenic Station for Superfluid Helium Testing of Prototype LHC Superconducting Magnets 1997 Geneva CERN Jul 1996 4 p paper revised version number 1 submitted on 2004-02-17 08:58:02 SIS INSP98 5869200 SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Dauvergne, J P Haug, F Knoops, S Lebrun, P Momal, F Sergo, S Tavian, L Vullierme, B LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-20 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=LHC-PROJECT-REPORT-20 Access to fulltext document http://cds.cern.ch/record/326937/files/lhc-project-report-20.pdf Access to fulltext document CERN n 199700 a1998 13 20100723 1338 CER01 19970602 305525 199-202 kitakyushu960520 PUBLIC 0002 000250321CER ARTICLE ConferencePaper 315773 SzGeCERN 20230531152215.0 oai:cds.cern.ch:315773 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN annual report 98-2157 CERCER 0238570 INSPEC 5862015 SPIRES 3392082 Inspire 421622 LHC-Project-Report-18 eng CERN-LHC-Project-Report-18 Lebrun, P Demands in refrigeration capacity for the Large Hadron Collider 1997 Geneva CERN 12 Jul 1996 5 p paper SIS INSP98 5862015 SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Riddone, G Tavian, L Wagner, U LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-18 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=.&id=CERN-LHC-PROJECT-REPORT-18 Access to fulltext document http://cds.cern.ch/record/315773/files/lhc-project-report-18.pdf Access to fulltext document http://cds.cern.ch/record/315773/files/lhc-project-report-18.ps.gz Access to fulltext document http://cds.cern.ch/record/315773/files/lhc-project-report-18.tif Access to fulltext document CERN n 199649 a1998 13 20100901 1604 CER01 19961128 305525 95-98 kitakyushu960520 PUBLIC 000238570CER ARTICLE ConferencePaper 0002 310033 SzGeCERN 20240223155924.0 oai:cds.cern.ch:310033 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN annual report 97-1330 CERCER 0232595 Inspire 420777 LHC-Project-Report-12 eng CERN-LHC-Project-Report-12 Benda, V Conceptual design of the cryogenic system for the Large Hadron Collider (LHC) 1996 Geneva CERN 9 Jul 1996 3 p paper revised version number 1 submitted on 2004-02-16 16:43:40 CC-BY publication JACoW SIS EPAC96-2005 SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Bézaguet, Alain-Arthur Casas-Cubillos, J Claudet, S Erdt, W K Lebrun, P Riddone, G Sergo, V Serio, L Tavian, L Vullierme, B Van Weelderen, R Wagner, U LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-12 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=CERN-LHC-PROJECT-REPORT-12 Access to fulltext document https://accelconf.web.cern.ch/e96/abstracts/leb4165.pdf Abstract from JACoW https://accelconf.web.cern.ch/e96/PAPERS/ORALS/THO04A.PDF Published version from JACoW http://cds.cern.ch/record/310033/files/lhc-project-report-12.pdf Access to fulltext document http://cds.cern.ch/record/310033/files/lhc-project-report-12.ps.gz Access to fulltext document CERN n 199645 a1997 13 20100723 1341 CER01 19960904 292394 e-proc. 361-363 sitges960610 PUBLIC 0002 000232595CER ARTICLE ConferencePaper 310032 SzGeCERN 20230531152145.0 oai:cds.cern.ch:310032 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN DOI 10.1016/B978-008042688-4/50103-4 CERN annual report 98-1827 CERCER 0232593 INSPEC 5869241 SLAC 3405494 SPIRES 3405494 Inspire 422299 LHC-Project-Report-21 eng CERN-LHC-Project-Report-21 Ferlin, G Comparison of floating and thermalized multilayer insulation systems at low boundary temperature 1997 Geneva CERN 17 Jul 1996 4 p paper The Large Hadron Collider (LHC) is 26.7 km circumference particle collider using high-field superconducting magnets operating in superfluid helium. An efficient and robust thermal insulation system is therefore required to minimize the residual heat in leak to the large surface area at 1.9 K constituted by the stainless steel wall of the helium enclosure. The baseline solution uses "floating" multilayer reflective insulation. Moreover, an alternative consists of a combination of multilayer reflective films and a soft screen, partially thermalized to the 5 K level and supported away from the cold wall by net-type insulating spacers. This chapter establishes the improvement potential of the alternative over the baseline solution, and compares their insulation performance on the basis of measured characteristics of thermal contacts and spacers. SIS INSP98 5869241 SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Jenninger, B Lebrun, P Peón-Hernández, G Riddone, G Szeless, Balázs LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-21 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=CERN-LHC-PROJECT-REPORT-21 Access to fulltext document http://cds.cern.ch/record/310032/files/lhc-project-report-21.pdf Access to fulltext document http://cds.cern.ch/record/310032/files/lhc-project-report-21.ps.gz Access to fulltext document http://cds.cern.ch/record/310032/files/lhc-project-report-21.tif Access to fulltext document CERN n 199645 a1998 13 20100723 1341 CER01 19960904 305525 443-446 kitakyushu960520 PUBLIC 0002 000232593CER ARTICLE ConferencePaper 308240 SzGeCERN 20230531152245.0 oai:cds.cern.ch:308240 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN annual report 98-1460 CERCER 0230644 INSPEC 5862014 SLAC 3405516 SPIRES 3405516 Inspire 422301 LHC-Project-Report-23 eng CERN-LHC-Project-Report-23 Bézaguet, Alain-Arthur Cryogenic operation and testing of the extended LHC prototype magnet string 1997 Geneva CERN 17 May 1996 4 p paper revised version number 1 submitted on 2004-02-17 09:05:47 After the assembly, commissioning and successful first operation of a full-scale superconducting magnet string, and as a new prototype dipole magnet was added to approach final configuration, the cryogenic system has been slightly modified to allow the verification of the performance of the superfluid helium cooling loop in counter-current two-phase flow. At the same time the control system strategies have been updated and only two quench relief valves have been installed, one at each end of the string. We report on the cryogenic operation of the extended version of the string and the response of the system to transients. SIS INSP98 5862014 SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Casas-Cubillos, J Guinaudeau, H Hilbert, B Lebrun, P Serio, L Suraci, A Van Weelderen, R LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-23 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=CERN-LHC-PROJECT-REPORT-23 Access to fulltext document http://cds.cern.ch/record/308240/files/lhc-project-report-23.pdf Access to fulltext document http://cds.cern.ch/record/308240/files/lhc-project-report-23.ps.gz Access to fulltext document http://cds.cern.ch/record/308240/files/lhc-project-report-235.cover_LHCpr235.ps.gz Access to fulltext document CERN n 199633 a1998 13 20100723 1342 CER01 19960806 305525 91-94 kitakyushu960520 PUBLIC 0001 000230644CER ARTICLE ConferencePaper 308239 SzGeCERN 20230531152245.0 oai:cds.cern.ch:308239 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN annual report 98-1712 CERCER 0230643 INSPEC 5869199 SLAC 3396193 SPIRES 3396193 Inspire 421986 LHC-Project-Report-22 eng CERN-LHC-Project-Report-22 Decker, L A cryogenic axial-centrifugal compressor for superfluid helium refrigeration 1997 Geneva CERN 17 May 1996 4 p paper CERN's new project, the Large Hadron Collider (LHC), will use superfluid helium as coolant for its high-field superconducting magnets and therefore require large capacity refrigeration at 1.8 K. This may only be achieved by subatmospheric compression of gaseous helium at cryogenic temperature. To stimulate development of this technology, CERN has procured from industry prototype Cold Compressor Units (CCU). This unit is based on a cryogenic axial-centrifugal compressor, running on ceramic ball bearings and driven by a variable-frequency electrical motor operating under low-pressure helium at ambient temperature. The machine has been commissioned and is now in operation. After describing basic constructional features of the compressor, we report on measured performance. SIS INSP98 5869199 SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Löhlein, K Schustr, P Vins, M Brunovsky, I Lebrun, P Tavian, L LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-22 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=CERN-LHC-PROJECT-REPORT-22 Access to fulltext document http://cds.cern.ch/record/308239/files/lhc-project-report-22.pdf Access to fulltext document http://cds.cern.ch/record/308239/files/lhc-project-report-22.ps.gz Access to fulltext document Linde Kryotechnik, Switzerland n 199633 a1998 13 20100723 1342 CER01 19960806 305525 195-198 kitakyushu960520 PUBLIC 0002 000230643CER ARTICLE ConferencePaper 307374 SzGeCERN 20240223155844.0 oai:cds.cern.ch:307374 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN CERN annual report 97-1364 Inspire 421567 LHC-Project-Report-32 eng CERN-LHC-Project-Report-32 Bézaguet, Alain-Arthur The LHC test string first operational experience 1996 Geneva CERN 18 Jul 1996 4 p paper CERN operates the first version of the LHC Test String which consists of one quadrupole and three 10-m twin aperture dipole magnets. An experimental programme aiming at the validation of the LHC systems started in February 1995. During this programme the string has been powered 100 times 35 of which at 12.4 kA or above. The experiments have yielded a number of results some of which, like quench recovery for cryogenics, have modified the design of subsystems of LHC. Others, like controlled helium leaks in the cold bore and quench propagation bewteen magnets, have given a better understanding on the evolution of the phenomena inside a string of superconducting magnets cooled at superfluid helium temperatures. Following the experimental programme, the string will be powered up and powered down in one hour cycles as a fatigue test of the structure thus simulating 20 years of operation of LHC. CC-BY publication JACoW SIS EPAC96-2005 SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings ARTICLE CERN LHCPROJECTREPORT CERN LHC Not applicable Brahy, D Casas-Cubillos, J Coull, L Cruikshank, P Dahlerup-Petersen, K Faugeras, Paul E Flemsæter, B Guinaudeau, H Hagedorn, Dietrich Hilbert, B Krainz, G Kos, N Lavielle, D Lebrun, P Leo, G Mathewson, A G Missiaen, D Momal, F AUTHOR|(CDS)2068042 #BEARD# Parma, Vittorio Quesnel, Jean Pierre Richter, D Riddone, G Rijllart, A Rodríguez-Mateos, F Rohmig, P Saban, R I Schmidt, R Serio, L Skiadelli, M Suraci, A Tavian, L Walckiers, L Wallén, E Van Weelderen, R Williams, L McInturff, A LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-PROJECT-REPORT-32 http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=CERN-LHC-PROJECT-REPORT-32 Access to fulltext document https://accelconf.web.cern.ch/e96/abstracts/sab2197.pdf Abstract from JACoW https://accelconf.web.cern.ch/e96/PAPERS/ORALS/WEO07A.PDF Published version from JACoW http://cds.cern.ch/record/307374/files/lhc-project-report-32.pdf Access to fulltext document 3232 148135 http://cds.cern.ch/record/307374/files/lhc-project-report-32.ps.gz Access to fulltext document 3232 136367 1375960 43312 http://cds.cern.ch/record/307374/files/WEO07A.PDF CERN LBL, Berkeley (CA), USA n 199631 a1997 13 20100727 1739 CER01 19960722 292394 e-proc. 358-360 sitges960610 PUBLIC 0001 000229616CER ARTICLE ConferencePaper 593265 SzGeCERN 20230531161913.0 oai:cds.cern.ch:593265 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN CERCER 2352236 CERN annual report 2004-3.0856 SPIRES 5569354 Inspire 607431 CERN-LHC-2002-014-ECR eng Pietropinto, S Low Temperature Gaseous Helium and very High Turbulence Experiments 2002 Geneva CERN 21 Nov 2002 5 p paper Report Cryogenic gaseous helium gives access to extreme turbulent experimental conditions. The very high cooling helium flow rates available at CERN have been used to reach Reynolds numbers up to Re ~ 10**7 in a round jet experiment. First results are discussed. CERN EDS 20021127SLAC CLAS1 LHC-ECR SzGeCERN Accelerators and Storage Rings ARTICLE CERN CERN LHC Baudet, C Castaing, B Chabaud, B Gagne, Y Hébral, B Ladam, Y Lebrun, P Pirotte, O Poulain, C Roche, P E LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-2002-14-ECR http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-2002-014 Access to fulltext document http://cds.cern.ch/record/593265/files/lhc-2002-014.pdf Access to fulltext document http://cds.cern.ch/record/593265/files/lhc-2002-014.ps.gz Access to fulltext document evelyne.delucinge@cern.ch CERN CRTBT CNRS-UJF-INPG, Grenoble LEGI UJF-INPG-CNRS, Grenoble Phys. Department ENS Lyon-CNRS, Lyon CRETA CNRS, Grenoble, France LPMC ENS Paris-CNRS, Paris, France n 200503 a2004 13 20100728 1719 CER01 20021126 574467 813-816 grenoble20020722 PUBLIC 0001 002352236CER ARTICLE ConferencePaper 592467 SzGeCERN 20230531161913.0 oai:cds.cern.ch:592467 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN CERCER 2351361 CERN-LHC-2002-011 eng Lebrun, P Cryogenics for Particle Accelerators and Detectors 2002 Geneva CERN 5 Nov 2002 93 p paper Report revised version number 1 submitted on 2002-12-20 15:27:54 Cryogenics has become a key ancillary technology of particle accelerators and detectors, contributing to their sustained development over the last fifty years. Conversely, this development has produced new challenges and markets for cryogenics, resulting in a fruitful symbiotic relation which materialized in significant technology transfer and technical progress. This began with the use of liquid hydrogen and deuterium in the targets and bubble chambers of the 1950s, 1960s and 1970s. It developed more recently with increasing amounts of liquefied noble gases - mainly argon, but also krypton and even today xenon - in calorimeters. In parallel with these applications, the availability of practical type II superconductors from the early 1960s triggered the use of superconductivity in large spectrometer magnets - mostly driven by considerations of energy savings - and the corresponding development of helium cryogenics. It is however the generalized application of superconductivity in particle accelerators - RF acceleration cavities and high-field bending and focusing magnets - which has led to the present expansion of cryogenics, with kilometer-long strings of helium-cooled devices, powerful and efficient refrigerators and superfluid helium used in high tonnage as cooling medium. This situation was well reflected over the last decades by the topical courses of the CERN Accelerator School (CAS). In 1988, CAS and DESY jointly organized the first school on Superconductivity in Particle Accelerators, held at Haus Rissen in Hamburg, where I shared the h. and duty of lecturing on cryogenics with Professor J.L. Olsen of ETH Z rich, while P. Seyfert of CEA Grenoble delivered an evening seminar on superfluidity. This successful school was reiterated in 1995, with cryogenics being addressed by Professor W.F. Vinen of University of Birmingham (superfluidity), as well as J. Schmid (thermodynamics and refrigeration) and myself (superfluid helium technology) of CERN. In the CAS School on Superconductivity and Cryogenics for Particle Accelerators and Detectors held in May 2002 in Erice, Sicily, I am particularly pleased to see a more complete syllabus in cryogenics, most of which is covered by CERN colleagues and published in this report. This is in my view, another sign of the development and vitality of this discipline at CERN, primarily in the LHC division which, by virtue of its mandate and competence, is presently building the largest helium cryogenic system in the world for the Large Hadron Collider and its experiments. I hope this report constitutes a useful source of information and updated reference for our staff dedicated to this formidable endeavour. 20021122SLAC CERN EDS CLAS1 LHC-ACR SzGeCERN Accelerators and Storage Rings CERN PREPRINT XX XX Tavian, L Vandoni, Giovanna AUTHOR|(CDS)2067499 #BEARD# Wagner, U LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-2002-11 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-2002-011 Access to fulltext document http://cds.cern.ch/record/592467/files/lhc-2002-011.pdf Access to fulltext document http://cds.cern.ch/record/592467/files/lhc-2002-011.ps.gz Access to fulltext document evelyne.delucinge@cern.ch CERN n 200247 11 20100608 1158 CER01 20021121 PUBLIC 0001 002351361CER PREPRINT