Title: An Overview of the Enhanced Modified Faraday Cup (EMFC) Electron Beam Power Density Distribution Diagnostic
Abstract: The Enhanced Modified Faraday Cup (EMFC) electron beam diagnostic tool was developed to measure the power distribution of high power density electron beams. Unlike existing qualitative methods based on the transfer of machine settings, the EMFC uses quantitative measurements of specific beam properties to determine the beam’s power density distribution for both sharp and defocused beams. Operationally, the EMFC probes the electron beam using a series of radial slits machined into a circular disk. As the beam is rapidly circled over the slits, beam profile data are acquired from multiple angles. Computed tomography algorithms are then used to reconstruct the beam for rapid analysis of the beam. Based on the reconstruction, the important beam properties, including measures of the beam width and peak power density are determined and recorded for quality control purposes. This paper presents an overview of the EMFC device and its beam characterization techniques, highlighting applications in weld development, weld transfer between different machines and facilities, and quality control in production.
Publication Year: 2011
Publication Date: 2011-12-29
Language: en
Type: article
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Cited By Count: 2
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