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US 5,463,268 AGranted
Magnetically shielded high voltage electron accelerator
AssigneeNational Electrostatics Corp.
InventorJames B. Schroeder
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AssigneeNational Electrostatics Corp.
InventorJames B. Schroeder
Estimating the term…
The high voltage electrostatic accelerator of this invention has spark arrester rings which form magnetic shield elements around an acceleration tube and which together with mu-metal rings between accelerator segments shield the electrons being accelerated from stray static and dynamic magnetic fields. The spark arresters surround the accelerating electrodes. The rings between accelerator segments are formed of mu-metal, an alloy of nickel designed for its magnetic shielding properties and consisting of 77 percent nickel, 4.8 percent copper, 1.5 percent chrome and 14.9 percent iron. The mu-metal spark arresters together with the rings between accelerators segments provide an effective magnetic shield in a cost-effective manner. Because mu-metal has a high permeability, magnetic field lines tend to travel about the Mu-metal rings rather than pass through the acceleration tube, where they would influence electrons being accelerated. The discontinuous nature of the shield allows it to be super-positioned as an integral part of the spark arresters positioned about the accelerating electrodes.
A magnetically shielded high voltage electron accelerator comprising:
In a high voltage electrostatic accelerator having a pressure vessel filled with high pressure insulating gas, a support member within the pressure vessel, an insulated high voltage electrode spaced a substantial distance from said support, and an acceleration tube extending from the high voltage electrode to the support member, the tube being composed of it multiplicity of insulating segments and a multiplicity of voltage carrying plates, each plate being connected to a metal spark arrester ring surrounding the tube, the tube for accelerating electrons being composed of a plurality of segments having segment attachment rings which abut to form joints, the segments being composed of the insulating elements and the annular voltage-carrying elements;
A magnetically shielded high voltage electron accelerator comprising:
In combination with a high voltage electron accelerator of the type having an electron source a high voltage vacuum tube for accelerating electrons composed of segments of connected axially spaced annular insulating elements and annular voltage-carrying elements each segment having a segment attachment ring, such that adjacent segments of the vacuum tube are connected at joints defined between adjacent segment attachment rings, and wherein each voltage-carrying element has a spark arrester attached thereto, the improvement comprising:
Dependencies are inferred from the claim text.