Hybrid permanent magnet gradient dipoles for the recycler ring at Fermilab

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Hybrid permanent magnets provide the magnetic fields for an anti- proton storage ring which is under construction at Fermilab. Using a combined function lattice, gradient magnets provide the bending, focusing and sextupole correction for the regular cells. Shorter magnets without sextupole are used in dispersion suppressor cells. These magnets use a 4.7 m ( 3 m) long iron shell for flux return, bricks of 25.4 mm thick strontium ferrite supply the flux and transversely tapered iron poles separated by aluminum spacers set the shape of the magnetic field. Central fields of 0.14 T with gradients of {approx}6%/inch ({approx}13%/inch) are required. ... continued below

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6 p.; Other: FDE: POSTSCRIPT; PL:

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Brown, B.C.; Dimarco, J.; Foster, G.W.; Glass, H.D.; Haggard, J.E.; Harding, D.J. et al. November 1, 1997.

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Hybrid permanent magnets provide the magnetic fields for an anti- proton storage ring which is under construction at Fermilab. Using a combined function lattice, gradient magnets provide the bending, focusing and sextupole correction for the regular cells. Shorter magnets without sextupole are used in dispersion suppressor cells. These magnets use a 4.7 m ( 3 m) long iron shell for flux return, bricks of 25.4 mm thick strontium ferrite supply the flux and transversely tapered iron poles separated by aluminum spacers set the shape of the magnetic field. Central fields of 0.14 T with gradients of {approx}6%/inch ({approx}13%/inch) are required. Field errors are expected to be less than 10{sup -4} of the bend field over an aperture of {+-}40 mm (horizontal) {times} {+-}20 mm (vertical). Design, procurement, fabrication, pole potential adjustment, field shape trimming and measured fields will be reported.

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6 p.; Other: FDE: POSTSCRIPT; PL:

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INIS; OSTI as DE98051438

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  • 15. international conference on magnet technology, Beijing (China), 20-24 Oct 1997

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  • Other: DE98051438
  • Report No.: FNAL/C--97/338
  • Report No.: CONF-9710127--
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 577215
  • Archival Resource Key: ark:/67531/metadc697965

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  • November 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 1, 2016, 5:29 p.m.

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Brown, B.C.; Dimarco, J.; Foster, G.W.; Glass, H.D.; Haggard, J.E.; Harding, D.J. et al. Hybrid permanent magnet gradient dipoles for the recycler ring at Fermilab, article, November 1, 1997; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc697965/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.