Modelling RF sources using 2-D PIC codes

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In recent years, many types of RF sources have been successfully modelled using 2-D PIC codes. Both cross field devices (magnetrons, cross field amplifiers, etc.) and pencil beam devices (klystrons, gyrotrons, TWT`S, lasertrons, etc.) have been simulated. All these devices involve the interaction of an electron beam with an RF circuit. For many applications, the RF structure may be approximated by an equivalent circuit, which appears in the simulation as a boundary condition on the electric field (``port approximation``). The drive term for the circuit is calculated from the energy transfer between beam and field in the drift space. For … continued below

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10 p.

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Eppley, K. R. March 1, 1993.

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Description

In recent years, many types of RF sources have been successfully modelled using 2-D PIC codes. Both cross field devices (magnetrons, cross field amplifiers, etc.) and pencil beam devices (klystrons, gyrotrons, TWT`S, lasertrons, etc.) have been simulated. All these devices involve the interaction of an electron beam with an RF circuit. For many applications, the RF structure may be approximated by an equivalent circuit, which appears in the simulation as a boundary condition on the electric field (``port approximation``). The drive term for the circuit is calculated from the energy transfer between beam and field in the drift space. For some applications it may be necessary to model the actual geometry of the structure, although this is more expensive. One problem not entirely solved is how to accurately model in 2-D the coupling to an external waveguide. Frequently this is approximated by a radial transmission line, but this sometimes yields incorrect results. We also discuss issues in modelling the cathode and injecting the beam into the PIC simulation.

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10 p.

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OSTI; NTIS; INIS; GPO Dep.

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  • Computational accelerator physics conference (CAP93),Pleasanton, CA (United States),22-26 Feb 1993

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  • Other: DE93010954
  • Report No.: SLAC-PUB--6067
  • Report No.: CONF-930269--10
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 10146492
  • Archival Resource Key: ark:/67531/metadc1318889

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • March 1, 1993

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  • Nov. 3, 2018, 11:47 a.m.

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  • Nov. 19, 2018, 1:54 p.m.

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Eppley, K. R. Modelling RF sources using 2-D PIC codes, article, March 1, 1993; Menlo Park, California. (https://digital.library.unt.edu/ark:/67531/metadc1318889/: accessed July 29, 2021), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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