Patent ID: 9084336
Filing Date: 2015-07-14
Classification: H05H

Abstract:
1. An accelerator system capable of producing a high-current, high-energy ion beam of more than 5 mA and more than 500 keV, comprising: a high-voltage terminal maintained at a voltage of up to several MV; an accelerating tube having a plurality of electrodes separated by insulating rings providing an essentially axially directed electrostatic field that serves to accelerate said ion beam along its axis, a high voltage DC power supply maintaining said high voltage terminal at the voltage of up to several MV and providing the high voltage potential required to generate said electrostatic field for said accelerating tube, an ion source located at said high-voltage potential in said high voltage terminal to generate said ion beam that emerges from its extraction hole, a vacuum enclosure disposed in said high voltage terminal and connecting said ion source and said accelerating tube, a magnetic analyzer located in between said ion source and said accelerating tube for the removal of unwanted contaminants in said ion beam, a pumping tube extending from a high voltage end connected to said vacuum enclosure to an exit; and a vacuum pump located outside of said high voltage terminal and connected to said exit of said pumping tube in order to pump neutral gas released from said ion source and transported through said pumping tube to prevent said neutral gas from flowing into said accelerating tube.