Perturbation of Focusing Field Profile due to HV Support Tube

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Presentation transcript:

Perturbation of Focusing Field Profile due to HV Support Tube

Poisson Field Profile for Tunnel Gun Geometry Focusing center (cathode center) is located at x = 8.89cm . Focusing electric field is 0V/cm at focusing center. Focusing center should be constant from cathode to anode

Focusing E-field profile for Tunnel Geometry Focusing center is constant from cathode to anode

Poisson Field Profile for Load lock Geometry Added HV tube to the right

Focusing E-field profile for Load Lock Geometry Focusing center changes from cathode to anode

Conclusion Model shows focusing field is perturbed by introducing the side HV tube Experimental test required to see how much of an effect this perturbation has on beam dynamics