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Volume 31 Issue 7
Dec.  2010
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Zhang Rui, Wang Yong, Xie Jing-xin. Simulation Study of the Confined-Flow Multi-lenses Multi-beam Electron-Optical System[J]. Journal of Electronics & Information Technology, 2009, 31(7): 1722-1726. doi: 10.3724/SP.J.1146.2008.00799
Citation: Zhang Rui, Wang Yong, Xie Jing-xin. Simulation Study of the Confined-Flow Multi-lenses Multi-beam Electron-Optical System[J]. Journal of Electronics & Information Technology, 2009, 31(7): 1722-1726. doi: 10.3724/SP.J.1146.2008.00799

Simulation Study of the Confined-Flow Multi-lenses Multi-beam Electron-Optical System

doi: 10.3724/SP.J.1146.2008.00799
  • Received Date: 2008-06-23
  • Rev Recd Date: 2009-03-11
  • Publish Date: 2009-07-19
  • The electron-optical system of an L-band multi-beam klystron is designed. The 2-D simulation for the system is conducted first and the 3-D simulation is done in succession. Confined-flow uniform magnetic fields focusing system with multi-lenses is adopted and the paraxial beams with perfect characteristic are obtained. Simulation indicates that the beam occupancy rate is about 55%, the beam transmission rate is 100%, the multi-lenses system can modulate the beam equilibrium radius effectively and the uniform magnetic field in gun region can modulate the beam trajectories. The focusing system allows matching beams with the magnetic fields on the cathode range from 0.001 T to 0.01 T and the magnetic fields in main region range from 0.06 T to 0.13 T.
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