Effect of the coupling slots on beam dynamics in accelerator structure of Moscow CW RTM

Shvedunov, V.I.; Alimov, A.S.; Chepurnov, A.; Chubarov, O.V.; Ermakov, D.I.; Tiunov, Alexei V.; Tkachev, P.L.

doi:10.1109/pac.1995.505882

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“…In our previous study of on-axis coupled structures with one coupling slotlweb, we found that dipole asymmetric coupling cell fields of tuned structures strongly influence the phase dependent beam shift at the accelerator output [ 3 ] .…”

Section: Introductionmentioning

confidence: 89%

Optimizing coupling in biperiodic accelerating structures

Kostin

Salakhutdinov

Shvedunov³

et al. 1998

IEEE Trans. Nucl. Sci.

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We have studied the electrodynamic and focusing dependence on the coupling slot and coupling cell parameters for circular and rectangular accelerating structures. We find that: (i) for circular structures the coupling slot induced asymmetric electromagnetic fields of the coupling cell have twice the influence on the transverse beam dynamics than those of accelerating cells; (ii) the neighboring cell coupling slot location can influence the beam dynamics from minimally to usefully; and (iii) by increasing the coupling slot area while optimizing its geometry and decreasing the coupling cell area covered by surface currents, the coupling can be increased -15% with little decrease in shunt impedance.

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Section: Introductionmentioning

confidence: 89%