Electrostatic accelerators
AssigneeScience Research Council
InventorsDerek Anthony Eastham, Thomas Joy
Life of this patent
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Abstract
An accelerating tube for an electrostatic particle accelerator is composed of a plurality of rings of insulating material interleaved with annular metal discs. The discs are interconnected externally of the tube by resistor bridges in a manner to provide a decoupled zone somewhere along the potential gradient and within this zone particle trapping electrodes are placed to take out low energy particles near the periphery of the main beam with reduced secondary particle generation.
Claims11
An accelerating tube for an electrostatic particle accelerator comprising a plurality of conductive metal ring-shaped electrodes and ring-shaped insulators bonded together alternately, an electrical resistor chain external to the tube, and interconnections between each electrode and the resistor chain, the resistor values being such that, in response to an electrical potential applied across the tube, a potential gradient exists along the tube, the tube having an axial portion thereof decoupled from said gradient, said axial portion being defined between a pair of spaced ring-shaped electrodes connected into the resistor chain by resistor values imparting equal potentials to said pair of electrodes, and a particle trapping means between said pair of spaced electrodes constituted by electrode means bearing a reverse bias potential with respect to the potential gradient.
Dependencies are inferred from the claim text.