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Title: Note: O-ring stack system for electron gun alignment

We present a reliable method for aligning an electron gun which consists of an electron source and lenses by controlling a stack of rubber O-rings in a vacuum condition. The beam direction angle is precisely tilted along two axes by adjusting the height difference of a stack of O-rings. In addition, the source position is shifted in each of three orthogonal directions. We show that the tilting angle and linear shift along the x and y axes as obtained from ten stacked O-rings are ±2.55° and ±2 mm, respectively. This study can easily be adapted to charged particle gun alignment and adjustments of the flange position in a vacuum, ensuring that its results can be useful with regard to electrical insulation between flanges with slight modifications.
Authors:
; ; ; ;  [1] ;  [1] ;  [2]
  1. Korea Research Institute of Standards and Science (KRISS), Daejeon 305-340 (Korea, Republic of)
  2. (Korea, Republic of)
Publication Date:
OSTI Identifier:
22392340
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ALIGNMENT; BEAMS; CHARGED PARTICLES; ELECTRICAL INSULATION; ELECTRON GUNS; ELECTRON SOURCES; FLANGES; GASKETS; RUBBERS