Physical Review Special Topics - Accelerators and Beams · 2003 · 15 citations · 4 references
EngineeringElectrical EngineeringPhysicsCircuit TheoryElectromagnetismMagnetic MaterialsElectromagnetic CompatibilityFerrimagnetic MaterialsMagnetic Circuit AnalysisMagnetic ComponentsEquivalent Circuit AnalysisEquivalent Circuit ModelingFerrite MagnetsFerritesImpedance AnalysisMagnetic Equivalent CircuitsMagnetic ModelingTransformer Models
A transformer model of ferrite kicker magnets is presented in this paper. Based on this model, an equivalent circuit is derived for which the elements can be obtained by bench measurements or by estimates from the magnet geometry. Improved formulas for the transverse coupling impedance of lumped and traveling wave kicker magnets are derived from the model and the equivalent circuit. The formulas differ from the corresponding handbook results in their dependence on the external termination or aperture aspect, respectively. The effect of ferrite properties on the transverse coupling impedance is analyzed. The model was confirmed by bench measurements with the twin-wire technique made on the full-size and half-size prototypes of the extraction kicker of the SNS accumulator ring. The application of this model to the design of the kickers allowed a significant reduction of the SNS transverse coupling impedance budget.
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Transmission-line impedance measurements for an advanced hadron facility
L. Walling, D.E. McMurry, David Neuffer et al. · Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · 1989 · 67 citations
Engineering, Electrical Engineering, Nuclear Engineering +13