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Magnetic design and measurement of nonlinear multipole magnets for the APT beam expander system

Conference ·
OSTI ID:537329
; ;  [1];  [2]; ; ;  [3]
  1. Los Alamos National Lab., NM (United States)
  2. Northrop Grumman Corp., Princeton, NJ (United States)
  3. Brookhaven National Lab., Upton, NY (United States)
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 predominantly 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.
Research Organization:
Los Alamos National Lab., NM (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
537329
Report Number(s):
LA-UR--97-1636; CONF-970503--236; ON: DE97008296
Country of Publication:
United States
Language:
English

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