Characterizations of a CERN NbTi Reference Wire at LBNL

Godeke, A. ; Dietderich, D.R. ; Higley, H.C. ; Liggins, N.L.

Lawrence Berkeley National Laboratory

关键词: Magnetic Fields;    Cern;    Strains;    Bnl;    75;   

DOI  :  10.2172/913161
RP-ID  :  LBNL--62392
RP-ID  :  DE-AC02-05CH11231
RP-ID  :  913161

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来源: UNT Digital Library

【 摘 要 】

We report on the measurement of two NbTi reference samples,obtained from CERN through BNL, wire number02R00056A01UX.265. The purposeof these characterizations is two-fold: 1) To establish aninter-laboratory comparisonof short sample tests and analysis betweenLBNL, BNL and Fermilab within the LARP collaboration. Due to differencesin reaction and mounting procedures and their resulting straindifferences, Nb3Sn is not suited for this purpose. 2) To determine theaccuracy of LBNL's system with regard to magnetic field, temperature andcurrent after a major system overhaul. The results show that at mu0H = 8T, the critical current result falls within the standard deviation of theCERN database, whereas at mu0H = 5 T, it falls outside the CERN standarddeviation, but within the range of critical current values that arereported by CERN for this wire. It is concluded that the LBNL resultsfall within the characterization variance as reported in the CERNdatabase.