528591 SzGeCERN 20230531152045.0 oai:cds.cern.ch:528591 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN LHC-Project-Report-520 eng CERN-LHC-Project-Report-520 Boutboul, T Critical Current Test Facilities for LHC Superconducting NbTi Cable Strands 2001 Geneva CERN 27 Nov 2001 8 p paper The Rutherford-type superconducting Cu/NbTi cables of the LHC accelerator are currently mass-produced by a few industrial firms. As a part of the acceptance tests, the critical current of superconducting multifilamentary wires is systematically measured on virgin strands to qualify the wires and on extracted strands to qualify the cables. For this purpose, four test stations are in operation at CERN to measure the critical current of strands at both 4.2 K and 1.9 K in magnetic fields in the 6-11 T range. The measurement setup and procedures of these facilities are reported in this article. The quality of the critical current test is guaranteed by supervising the SPC (Statistical Process Control) charts of a reference sample. The measurement repeatability and reproducibility of the stations are found to be excellent. Moreover, the measured critical current of a strand is found to be almost independent of the test station in which the measurement is performed. CERN EDS 20011207SLAC SIS ARC-PR-2007 CLAS1 LHC-PROJECT-REPORT SzGeCERN Accelerators and Storage Rings CERN LHCPROJECTREPORT PREPRINT CERN LHC Not applicable Charifoulline, Z Denarié, C H Oberli, L R CERN Richter, D LHC CERN Depot 4, bldg. 500-S-023 (DE4) CERN-LHC-Project-Report-520 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=lhc-project-report-520 Access to fulltext document http://cds.cern.ch/record/528591/files/lhc-project-report-520.pdf Access to fulltext document http://cds.cern.ch/record/528591/files/lhc-project-report-520.ps.gz Access to fulltext document Evelyne.Delucinge@cern.ch CERN n 200149 11 20100401 2001 CER01 20011130 580536 lyngby20010826 PUBLIC 002285494CER PREPRINT ConferencePaper 0001