Title :
Magnetic design and measurement of nonlinear multipole magnets for the APT beam expander system
Author :
Barlow, D. ; Shafer, R. ; Martinez, R. ; Walstrom, P. ; Kahn, S. ; Jain, A. ; Wanderer, P.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
Two prototype nonlinear multipole magnets have been designed for use in the 800-MeV beam test of the APT beam-expansion concept at LANSCE. The iron-dominated magnets each consist of three independent coils, two for producing a predominately octupole field with a tunable duodecapole component, and one for canceling the residual quadrupole field. Two such magnets, one for shaping each transverse plane, are required to produce a rectangular, uniform beam current density distribution with sharp edges on the APT target. This report will describe the magnetic design of these magnets, along with field measurements, and a comparison to the magnetic design
Keywords :
accelerator magnets; beam handling equipment; electromagnets; particle beam diagnostics; 800 MeV; APT beam expander system; Accelerator Production of Tritium; Fe; Fe-dominated magnets; LANSCE; T; field measurements; independent coils; magnetic design; nonlinear multipole magnets; octupole field; prototype nonlinear multipole magnets; residual quadrupole field; transverse plane; tunable duodecapole component; Apertures; Coils; Current density; Laboratories; Magnetosphere; Magnets; Particle beams; Probability distribution; Prototypes; Testing;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753191
