483940 SzGeCERN 20230531152145.0 oai:cds.cern.ch:483940 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN 10.1103/PhysRevSTAB.3.122403 DOI PRABFM CERCER 2237717 INSPEC 6934505 CERN annual report 2001-3.1217 SPIRES 4564499 Inspire 552891 LHC-Project-Report-460 eng CERN-LHC-Project-Report-460 Ferracin, P CERN Modeling of random geometric errors in superconducting magnets with applications to the CERN Large Hadron Collider 2000 Geneva CERN 19 Jan 2001 10 p paper Estimates of random field-shape errors induced by cable mispositioning in superconducting magnets are presented and specific applications to the Large Hadron Collider (LHC) main dipoles and quadrupoles are extensively discussed. Numerical simulations obtained with Monte Carlo methods are compared to analytic estimates and are used to interpret the experimental data for the LHC dipole and quadrupole prototypes. The proposed approach can predict the effect of magnet tolerances on geometric components of random field-shape errors, and it is a useful tool to monitor the obtained tolerances during magnet production. CC-BY-3.0 Publication 20010123SLAC CERN EDS SIS INSP2001 6934505 SIS:2001 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 B7410B (Particle beam handling and diagnostics) INSPEC B3240E (Superconducting coils and magnets) INSPEC accelerator-magnets INSPEC colliding-beam-accelerators INSPEC errors INSPEC Monte-Carlo-methods INSPEC proton-accelerators INSPEC superconducting-magnets Scandale, Walter CERN AUTHOR|(CDS)2107593 #BEARD# Todesco, Ezio CERN AUTHOR|(CDS)2108516 #BEARD# Wolf, R CERN LHC 122403 12 Phys. Rev. Spec. Top. Accel. Beams 3 2000 CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-460 http://documents.cern.ch/cgi-bin/setlink?base=generic&categ=public&id=cer-002237717 Access to fulltext document http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=aps&id=PhysRevSTAB.3.122403 APS Published version, local copy http://cds.cern.ch/record/483940/files/PhysRevSTAB.3.122403.pdf APS Published version, local copy http://cds.cern.ch/record/483940/files/cer-002237717.pdf Access to fulltext document Evelyne.Delucinge@cern.ch CERN n 200104 a2001 13 20100729 1035 CER01 20010119 PUBLIC 0001 002237717CER ARTICLE 480812 SzGeCERN 20230531152345.0 oai:cds.cern.ch:480812 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN SPIRES 4553225 Inspire 540021 LHC-Project-Report-448 eng CERN-LHC-Project-Report-448 Aleksa, Martin AUTHOR|(CDS)2068013 #BEARD# Parametric Quadrilateral Meshes for the Design and Optimization of Superconducting Magnets 2000 Geneva CERN 15 Dec 2000 7 p paper The program package ROXIE [1] has been developed at CERN for the design and optimization of the superconducting magnets for the LHC.The necessity of extremely uniform (coil dominated) fields in accelerator magnets requires very accurate methods of .eld computation. For this purpose a coupled boundary-element/ finite-element technique (BEM-FEM) is used [2]. Quadrilateral higher order finite-elements are used for the discretization of the iron domain.This is necessary for the accurate modeling of the iron contours and is favorable for 3D meshes. A new quadrilateral mesh generator using geometrically optimized domain decomposition which was developed at the University of Stuttgart, Germany [3] has been implemented into the ROXIE program providing fully automatic and user friendly mesh generation.The frequent application of mathematical optimization techniques requires parametric models which are set-up using a feature-based approach.The structure of the magnet cross-section can be modeled using parametric objects such as holes of different forms, elliptic, parabolic or hyperbolic arcs, notches, slots,etc. Investigations of the speed-up of the computations due to geometrically optimized meshes will be presented. For sensitivity analysis, point based morphing algorithms are applied to the generated mesh. CERN EDS SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable Russenschuck, Stephan AUTHOR|(CDS)2070496 #BEARD# Völlinger, Christine LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-448 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-project-report-448 Access to fulltext document http://cds.cern.ch/record/480812/files/lhc-project-report-448.pdf Access to fulltext document http://cds.cern.ch/record/480812/files/lhc-project-report-448.ps.gz Access to fulltext document Evelyne.Delucinge@cern.ch CERN n 200103 11 20100728 1107 CER01 20001218 411196 darmstadt20000911 PUBLIC 002234523CER PREPRINT ConferencePaper 0001 480810 SzGeCERN 20230531152243.0 oai:cds.cern.ch:480810 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN SPIRES 4553209 Inspire 540019 LHC-Project-Report-446 eng CERN-LHC-Project-Report-446 Russenschuck, Stephan AUTHOR|(CDS)2070496 #BEARD# Integrated Design of Superconducting Magnets with the CERN Field Computation Program ROXIE 2000 Geneva CERN 15 Dec 2000 13 p paper The program package ROXIE has been developed at CERN for the field computation of superconducting accelerator magnets and is used as an approach towards the integrated design of such magnets. It is also an example of fruitful international collaborations in software development.The integrated design of magnets includes feature based geometry generation, conceptual design using genetic optimization algorithms, optimization of the iron yoke (both in 2d and 3d) using deterministic methods, end-spacer design and inverse field calculation.The paper describes the version 8.0 of ROXIE which comprises an automatic mesh generator, an hysteresis model for the magnetization in superconducting filaments, the BEM-FEM coupling method for the 3d field calculation, a routine for the calculation of the peak temperature during a quench and neural network approximations of the objective function for the speed-up of optimization algorithms, amongst others.New results of the magnet design work for the LHC are given as examples. CERN EDS SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable Aleksa, Martin AUTHOR|(CDS)2068013 #BEARD# Bazan, M Lucas, J Ramberger, S Völlinger, Christine LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-446 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-project-report-446 Access to fulltext document http://cds.cern.ch/record/480810/files/lhc-project-report-446.pdf Access to fulltext document http://cds.cern.ch/record/480810/files/lhc-project-report-446.ps.gz Access to fulltext document Evelyne.Delucinge@cern.ch CERN n 200103 11 20100728 1107 CER01 20001218 411196 darmstadt20000911 PUBLIC 002234521CER PREPRINT ConferencePaper 0001