Shell-Based Support Structures for Nb3Sn Accelerator Quadrupole Magnets

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Shell-based support structures are being fabricated and tested as part of the development of large-aperture Nb{sub 3}Sn superconducting quadrupoles for future upgrades of the LHC Interaction Regions. These structures utilize water pressurized bladders for room-temperature pre-load control, and rely on a pre-tensioned aluminum shell to deliver a substantial part of the coil pre-stress during cool-down. The coil final pre-load is therefore monotonically approached from below, without overstressing the strain-sensitive conductor. This method has been adopted by the US LARP collaboration to test subscale racetrack coils (SQ series), 1 m long cos-theta coils (TQS series), and 4 m long magnets (LRS ... continued below

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Ferracin, Paolo May 19, 2008.

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Shell-based support structures are being fabricated and tested as part of the development of large-aperture Nb{sub 3}Sn superconducting quadrupoles for future upgrades of the LHC Interaction Regions. These structures utilize water pressurized bladders for room-temperature pre-load control, and rely on a pre-tensioned aluminum shell to deliver a substantial part of the coil pre-stress during cool-down. The coil final pre-load is therefore monotonically approached from below, without overstressing the strain-sensitive conductor. This method has been adopted by the US LARP collaboration to test subscale racetrack coils (SQ series), 1 m long cos-theta coils (TQS series), and 4 m long magnets (LRS and LQS series). We present recent progress in the development of shell-based support structures, with a description of the principles of operations and the future plans.

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  • Workshop on Accelerator Magnet Superconductors, Design and Optimization, Geneva, Switzerland, May 19-23, 2008

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  • Report No.: LBNL-2831E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 978865
  • Archival Resource Key: ark:/67531/metadc929337

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Office of Scientific & Technical Information Technical Reports

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  • May 19, 2008

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Jan. 4, 2017, 3:18 p.m.

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Ferracin, Paolo. Shell-Based Support Structures for Nb3Sn Accelerator Quadrupole Magnets, article, May 19, 2008; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc929337/: accessed July 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.