Calculation of magnetic error fields in hybrid insertion devices

Conference · Tue Aug 01 04:00:00 EDT 1989

OSTI ID:5042038

Savoy, R; Halbach, K; Hassenzahl, W; Hoyer, E; Humphries, D; Kincaid, B

The Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory requires insertion devices with fields sufficiently accurate to take advantage of the small emittance of the ALS electron beam. To maintain the spectral performance of the synchrotron radiation and to limit steering effects on the electron beam these errors must be smaller than 0.25%. This paper develops a procedure for calculating the steering error due to misalignment of the easy axis of the permanent magnet material. The procedure is based on a three dimensional theory of the design of hybrid insertion devices developed by one of us. The acceptable tolerance for easy axis misalignment is found for a 5 cm period undulator proposed for the ALS. 11 refs., 5 figs.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5042038
• Report Number(s): LBL-27811; CONF-890802--22; ON: DE90006108
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ALIGNMENT
ASYMMETRY
BEAM EMITTANCE
BEAMS
BREMSSTRAHLUNG
CALCULATION METHODS
CHARGE DISTRIBUTION
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTROMAGNETS
ELECTRON BEAMS
EQUIPMENT
ERRORS
LEPTON BEAMS
MAGNETIC FIELDS
MAGNETS
PARTICLE BEAMS
PERMANENT MAGNETS
RADIATIONS
SYNCHROTRON RADIATION
WIGGLER MAGNETS