Experiments and Simulations on a Prototype Recirculating Planar Magnetron

ORAL

Abstract

The Multi-Frequency Recirculating Planar Magnetron (MFRPM) is a type of Recirculating Planar Magnetron, a crossed-field, high power microwave source, with the added benefit of simultaneous oscillation at more than one primary frequency.\footnote{R.M. Gilgenbach et al., ``Crossed Field Device'', U.S. 2011/0204785 A1, Aug. 25, 2011, Patent Pending.} Prior research focused on the design of a dual L/S-band MFRPM prototype to demonstrate simultaneous operation at 1~GHz and 2~GHz. Dual frequency microwave emission on this prototype was recently demonstrated on the Michigan Electron Long Beam Accelerator with a ceramic insulator (MELBA-C), which drives the MFRPM by applying a -300~kV, 0.3--1.0~$\mu$s pulse to the cathode. Experiments are underway to characterize operation of the MFRPM prototype. Microwave power extraction and different cathode designs are also being explored to improve operation.\footnote{M. Franzi et al., Phys. Plasmas 20, 033108 (2013).} Results are compared to simulations of the experimental setup using the MAGIC particle-in-cell and HFSS finite-element codes.

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Authors

  • Geoff Greening

    Nuclear Eng. \& Rad. Sciences Dept., Univ of Michigan, Ann Arbor, Nuclear Eng. \& Rad. Sciences Department, University of Michigan, University of Michigan, Ann Arbor

  • N.M. Jordan

    The University of Michigan, Nuclear Eng. \& Rad. Sciences Dept., Univ of Michigan, Ann Arbor, Nuclear Eng. \& Rad. Sciences Department, University of Michigan, The University of Michigan, Ann Arbor, MI 48109

  • Ronald Gilgenbach

    The University of Michigan, Nuclear Eng. \& Rad. Sciences Dept., Univ of Michigan, Ann Arbor, Nuclear Eng. \& Rad. Sciences Department, University of Michigan, Univ of Michigan - Ann Arbor, The University of Michigan, Ann Arbor, MI 48109, University of Michigan, Ann Arbor

  • S. Exelby

    Nuclear Eng. \& Rad. Sciences Department, University of Michigan

  • Peng Zhang

    Nuclear Eng. \& Rad. Sciences Department, University of Michigan, University of Michigan, Ann Arbor, MI, Univ of Michigan - Ann Arbor, University of Michigan, Ann Arbor

  • David Simon

    Nuclear Eng. \& Rad. Sciences Dept., Univ of Michigan, Ann Arbor, Nuclear Eng. \& Rad. Sciences Department, University of Michigan, University of Michigan, Ann Arbor

  • M. Franzi

    Nuclear Eng. \& Rad. Sciences Dept., Univ of Michigan, Ann Arbor, Nuclear Eng. \& Rad. Sciences Department, University of Michigan

  • Y.Y. Lau

    Nuclear Eng. \& Rad. Sciences Dept., Univ of Michigan, Ann Arbor, Nuclear Eng. \& Rad. Sciences Department, University of Michigan, Univ of Michigan - Ann Arbor, University of Michigan, Ann Arbor