Laced permanent magnet quadrupole drift tube magnets [electronic resource].
- Berkeley, Calif. : Lawrence Berkeley National Laboratory, 1988.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 3 : digital, PDF file
- Additional Creators:
- Lawrence Berkeley National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- A laced permanent magnet quadrupole drift tube magnet has been constructed for a proof-of-principle test. The magnet is a conventional tape-wound quadrupole electromagnet, using iron pole- pieces, with the addition of permanent magnet material (neodymium iron) between the poles to reduce the effects of saturation. The iron is preloaded with magnetic flux generated by the permanent magnet material, resulting in an asymmetrical saturation curve. Since the polarity of the quadrupole magnets in a drift tube linac is not reversed we can take advantage of this asymmetrical saturation to provide greater focusing strength. The magnet configuration has been optimized and the vanadium permendur poles needed in a conventional quadrupole have been replaced with iron poles. The use of permanent magnet material has allowed us to increase the focusing strength of the magnet by about 20% over that of a conventional tape-wound quadrupole. Comparisons will be made between this magnet and the conventional tape-wound quadrupole. 3 refs., 5 figs.
- Report Numbers:
- E 1.99:lbl-25693
E 1.99: conf-881049-47
- Other Subject(s):
- Published through SciTech Connect.
Linear accelerator conference, Williamsburg, VA, USA, 3 Oct 1988.
Nelson, D.H.; Morrison, M.E.; Marks, J.S.; Halbach, K.; Behrsing, G.U.; Feinberg, B.
- Funding Information:
View MARC record | catkey: 14694239