Accelerating structure
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United States of America Patent
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Jan 12, 2016
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N/A
app pub date -
Sep 12, 2013
filing date -
Nov 7, 2012
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Abstract
The present invention provides an accelerating structure capable of increasing a degree of vacuum at a middle part inside the accelerating structure while confining an alternating electric field to the inside. An accelerating structure 1 is formed of a plurality of annular discs 2 and 3 serially connected into a cylindrical shape. At least one of the discs 3 disposed at a middle part of the accelerating structure 1 includes: a choke structure formed by a choke filter 7; and a vacuum port 8 opened in an outer circumferential surface of the disc on an outer circumferential side radially outward from the choke structure, and the vacuum port 8 is connected to an external exhaust device.
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