Accession Number : ADD017999
Title : Coaxial Hybrid Wiggler.
Descriptive Note : Patent, Filed 12 Jul 94, patented 12 Mar 96,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Jackson, Robert H ; Freund, Henry P ; Pershing, Dean E ; Taccetti, Jose M
Report Date : 12 Mar 1996
Pagination or Media Count : 12
Abstract : An electromagnetic wiggler having a cylindrical member, and a central member disposed axially within the cylindrical member, both of which are formed from alternating cylindrical sections of ferromagnetic and non-ferromagnetic material each sequential pair of these sections being the length of the wiggler's period lambda sub w. The sequence of sections between the inner and outer members is shifted (lambda sub w)/2, so that ferromagnetic sections of the outer member are disposed radially opposite non-ferromagnetic sections of the inner member, and vice versa. The resultant radial magnetic flux density in the cylindrical gap between the members is larger and sharper than the flux density for the same wiggler without the central member, permitting higher radiated power output, at higher radiation frequencies, for the same energy of input electron beam.
Descriptors : *WIGGLER MAGNETS, *PATENTS, MAGNETIC FIELDS, ELECTRON BEAMS, CONFIGURATIONS, FERROMAGNETIC MATERIALS, FLUX DENSITY
Subject Categories : Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE