Permanent gradient magnets for the 8 GeV transfer line at FNAL

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The 8 GeV transfer line feeding protons into the new Fermilab Main Injector has been built using strontium ferrite permanent magnets. This article addresses the design and manufacture of the 67 combined function magnets; permanent horizontal and verticle bend dipoles and quadrupoles were also built. The combined function magnets were built with a mean integrated strength at midaperture of 0.56953 T-m (central field nominally 0.15 T), and a gradient of 3.23% per cm relative to the dipole strength (nominal gradient = 0.48 T/m). Thermal compensation of these bricks was effected by use of a nickel-iron alloy. The magnets were thermally ... continued below

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5 p.

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Glass, H.D.; Bertsche, K.J. & Brown, B.C. June 1, 1997.

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Description

The 8 GeV transfer line feeding protons into the new Fermilab Main Injector has been built using strontium ferrite permanent magnets. This article addresses the design and manufacture of the 67 combined function magnets; permanent horizontal and verticle bend dipoles and quadrupoles were also built. The combined function magnets were built with a mean integrated strength at midaperture of 0.56953 T-m (central field nominally 0.15 T), and a gradient of 3.23% per cm relative to the dipole strength (nominal gradient = 0.48 T/m). Thermal compensation of these bricks was effected by use of a nickel-iron alloy. The magnets were thermally cycled from 20{degrees}C to 0{degrees}c to condition the ferrite against irreversible thermal losses; the compensation was measured with a flipcoil and verified with a rotating harmonics coil. We present details of the magnet assembly process and also summarize the magnetic measurements.

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5 p.

Notes

INIS; OSTI as DE97053474

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  • 17. IEEE particle accelerator conference, Vancouver (Canada), 12-16 May 1997

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  • Other: DE97053474
  • Report No.: FNAL/C--97/190
  • Report No.: CONF-970503--
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 539864
  • Archival Resource Key: ark:/67531/metadc697616

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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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  • June 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 1, 2016, 4:28 p.m.

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Glass, H.D.; Bertsche, K.J. & Brown, B.C. Permanent gradient magnets for the 8 GeV transfer line at FNAL, article, June 1, 1997; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc697616/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.