Fabrication and component testing results for a Nb{sub 3}Sn dipole magnet

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At present, the maximum field achieved in accelerator R&D dipoles is slightly over 10T, with NbTi conductor at 1.8 K. Although Nb{sub 3}Sn has the potential to achieve much higher fields, none of the previous dipoles constructed from Nb{sub 3}Sn have broken the 10T barrier. We report here on the construction of a dipole with high current density Nb{sub 3}Sn with a predicted short sample limit of 13T. A wind and react technique, followed by epoxy impregnation of the fiberglass insulated coils, was used. The problems identified with the use of Nb{sub 3}SD in earlier dipole magnets were investigated in ... continued below

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4 p.

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Dell`Orco, D.; Scanlan, R.M.; Taylor, C.E.; Lietzke, A.; Caspi, S.; van Oort, J.M. et al. October 1, 1994.

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Description

At present, the maximum field achieved in accelerator R&D dipoles is slightly over 10T, with NbTi conductor at 1.8 K. Although Nb{sub 3}Sn has the potential to achieve much higher fields, none of the previous dipoles constructed from Nb{sub 3}Sn have broken the 10T barrier. We report here on the construction of a dipole with high current density Nb{sub 3}Sn with a predicted short sample limit of 13T. A wind and react technique, followed by epoxy impregnation of the fiberglass insulated coils, was used. The problems identified with the use of Nb{sub 3}SD in earlier dipole magnets were investigated in a series of supplemental tests. This includes measurement of the degradation of J{sub c} with transverse strain, cabling degradation, joint resistance measurements, and epoxy strength tests. In addition, coff assembly techniques were developed to ensure that adequate prestress could be applied without damaging the reacted Nb{sub 3}Sn cable. We report here the results of these tests and the construction status of this 50 mm bore dipole.

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4 p.

Notes

INIS; OSTI as DE95012379

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  • Applied superconductivity conference, Boston, MA (United States), 16-21 Oct 1994

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  • Other: DE95012379
  • Report No.: LBL--35419
  • Report No.: SC-MAG--455;CONF-941013--47
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 79702
  • Archival Resource Key: ark:/67531/metadc738707

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  • October 1, 1994

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 5, 2016, 10:01 a.m.

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Dell`Orco, D.; Scanlan, R.M.; Taylor, C.E.; Lietzke, A.; Caspi, S.; van Oort, J.M. et al. Fabrication and component testing results for a Nb{sub 3}Sn dipole magnet, article, October 1, 1994; California. (digital.library.unt.edu/ark:/67531/metadc738707/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.