Correction of the field in the SSC dipoles using superconductor on the wedges

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The SSC colliding beam storage ring requires superconducting magnets capable of producing a magnetic field of 6.6 T which has very high accuracy. For many of the multipoles, that multipole must be reduced (at a radius of 1 centimeter) to the order of 0.2 parts in 10,000. This field accuracy is dictated by the physics of storing very small high-current proton beams at energies ranging from 1 TeV to 20 TeV. Magnetization of the superconductor can cause sextupole field errors of up to 6 parts in 10,000 at an injection field of 0.33 T at a radius of 1 centimeter. ... continued below

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Pages: 7

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Green, M.A. & Talman, R.M. September 1, 1987.

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Description

The SSC colliding beam storage ring requires superconducting magnets capable of producing a magnetic field of 6.6 T which has very high accuracy. For many of the multipoles, that multipole must be reduced (at a radius of 1 centimeter) to the order of 0.2 parts in 10,000. This field accuracy is dictated by the physics of storing very small high-current proton beams at energies ranging from 1 TeV to 20 TeV. Magnetization of the superconductor can cause sextupole field errors of up to 6 parts in 10,000 at an injection field of 0.33 T at a radius of 1 centimeter. Saturation of the magnet iron can induce sextupole field errors of 1 to 2 parts in 10,000 at the full field of 6.6 T. Manufacturing errors can induce other multipole components, both normal and skew. The SSC coil has three wedges separating the superconducting coil blocks on the inner layer of the coil. These wedges must be accurately located. If the wedges have superconductors attached, one can correct all of the magnetic field multipoles (both normal and skew) from N = 1 (dipole) to N = 6 (12 pole). This paper describes this method of correction as it pertains to the SSC dipole magnet. 9 refs., 5 figs., 3 tabs.

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Pages: 7

Notes

NTIS, PC A02; 3.

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  • 10. international conference on magnet technology (MT-10), Boston, MA, USA, 21 Sep 1987

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  • Other: DE88004573
  • Report No.: LBL-23942
  • Report No.: CONF-870901-21
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 5656879
  • Archival Resource Key: ark:/67531/metadc1093925

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • September 1, 1987

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • April 13, 2018, 11:28 a.m.

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Green, M.A. & Talman, R.M. Correction of the field in the SSC dipoles using superconductor on the wedges, article, September 1, 1987; United States. (digital.library.unt.edu/ark:/67531/metadc1093925/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.