Nb3Sn accelerator magnet development around the world

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During the past 30 years superconducting magnet systems have enabled accelerators to achieve energies and luminosities that would have been impractical if not impossible with resistive magnets. By far, NbTi has been the preferred conductor for this application because of its ductility and insensitivity of Jc to mechanical strain. This is despite the fact that Nb{sub 3}Sn has a more favorable Jc vs. B dependence and can operate at much higher temperatures. Unfortunately, NbTi conductor is reaching the limit of it usefulness for high field applications. Despite incremental increases in Jc and operation at superfluid temperatures, magnets are limited to ... continued below

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112 Kilobytes pages

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Lamm, Michael J. June 23, 2003.

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During the past 30 years superconducting magnet systems have enabled accelerators to achieve energies and luminosities that would have been impractical if not impossible with resistive magnets. By far, NbTi has been the preferred conductor for this application because of its ductility and insensitivity of Jc to mechanical strain. This is despite the fact that Nb{sub 3}Sn has a more favorable Jc vs. B dependence and can operate at much higher temperatures. Unfortunately, NbTi conductor is reaching the limit of it usefulness for high field applications. Despite incremental increases in Jc and operation at superfluid temperatures, magnets are limited to approximately a 10 T field. Improvements in conductor performance combined with future requirements for accelerator magnets to have bore fields greater than 10 T or operate in areas of large beam-induced heat loads now make Nb{sub 3}Sn look attractive. Thus, laboratories in several countries are actively engaged in programs to develop Nb{sub 3}Sn accelerator magnets for future accelerator applications. A summary of this important research activity is presented along with a brief history of Nb{sub 3}Sn accelerator magnet development and a discussion of requirements for future accelerator magnets.

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112 Kilobytes pages

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  • Applied Superconductivity Conference, Houston, TX (US), 08/05/2002--08/09/2002

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  • Report No.: FERMILAB-Conf-02/376-E
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 811917
  • Archival Resource Key: ark:/67531/metadc739537

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 23, 2003

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 1, 2016, 4:20 p.m.

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Lamm, Michael J. Nb3Sn accelerator magnet development around the world, article, June 23, 2003; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc739537/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.