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Electron dynamics and transverse-kick elimination in a high-field short-period helical microwave undulator
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10.1063/1.4759002
/content/aip/journal/apl/101/16/10.1063/1.4759002
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/16/10.1063/1.4759002
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic of the corrugated waveguide structure and (b) the Ex and Ez field distribution of the HE11 (R 0= λ).

Image of FIG. 2.
FIG. 2.

The normalized transverse velocity βx and βy (blue curve) and trajectory x/λ and y/λ (red curve) of single electron with time t/T for φ = 45° of CPBW.

Image of FIG. 3.
FIG. 3.

Variation of (a) γβx and γβy and 1000x/λ and 1000y/λ with time t/T and (b) 3-D electron trajectory for tapered CPBW with S = 4, n = 2, φ = 45°, and K = 1.

Image of FIG. 4.
FIG. 4.

Sectional view of the corrugated cavity and the magnetic field distribution of HE11 mode (only the left-half cavity shown by symmetry).

Image of FIG. 5.
FIG. 5.

Comparison of the electric-field amplitude of the HFSS simulation (red curve), the cold test result (blue), and the analytical field envelope (orange) along the axis in the undulator cavity.

Image of FIG. 6.
FIG. 6.

(a) Variation of the kick Rm with the taper length S and n2 for CPSW undulator; Red line—n2 = 1, Orange—n2 = 2, Yellow—n2 = 3, Green—n2 = 4, Purple—n2 = 5, Blue—n2 = 6, Black—n2 = 7, Brown—n2 = 8; A1 = 0.9; n1 = 4; B = 0.336; K = 1. (b) Comparison of Px,y of S = 1.5λ (brown and black curves for kick 0.31λ) with S = 6λ (red and blue curves for kick 0.01λ); n2 = 4.

Image of FIG. 7.
FIG. 7.

3-D electron trajectory under the real RF field in the CPSW undulator, K = 1, γ = 117.

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/content/aip/journal/apl/101/16/10.1063/1.4759002
2012-10-15
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electron dynamics and transverse-kick elimination in a high-field short-period helical microwave undulator
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/16/10.1063/1.4759002
10.1063/1.4759002
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