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Generally, the electron linear accelerator (e-LINAC) is used for various Industrial, Scientific, and Medical applications. It is powered by a high power S-band klystron at 2856 MHz for acceleration of its electron beam through it. The typical RF power output expected from klystron is close to 6.2 MW and an average power of around 25 kW. The WR 284 based waveguide components like straight sections, bends, directional coupler, RF load etc. are required to test the klystron and to transmit the RF power to accelerating cavities. The electromagnetic simulation software has been used to design these waveguide components. Design is based on EIA WR284 standard waveguide. The RF performance parameters of the devices have been optimized while changing the physical dimensions of the devices. The designed directional coupler has directivity greater than 30 dB at 2856 MHz. The E & H-plane bends are of sweep bends and RTN losses are better than 40 dB. An RF water load is designed using the tapered water wedge. To isolate the SF-6 and water column a ceramic barrier is used. The RTN loss of the designed load is greater than 30 dB at 2856 MHz.

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Design and Analysis of S-band Waveguide Components for an Electron Accelerator

  • 会议论文

  • 发表日期：

    2025年

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  • B. V. Ramarao,
  • Manjiri Pande,
  • Gopal Joshi

摘要

Generally, the electron linear accelerator (e-LINAC) is used for various Industrial, Scientific, and Medical applications. It is powered by a high power S-band klystron at 2856 MHz for acceleration of its electron beam through it. The typical RF power output expected from klystron is close to 6.2 MW and an average power of around 25 kW. The WR 284 based waveguide components like straight sections, bends, directional coupler, RF load etc. are required to test the klystron and to transmit the RF power to accelerating cavities. The electromagnetic simulation software has been used to design these waveguide components. Design is based on EIA WR284 standard waveguide. The RF performance parameters of the devices have been optimized while changing the physical dimensions of the devices. The designed directional coupler has directivity greater than 30 dB at 2856 MHz. The E & H-plane bends are of sweep bends and RTN losses are better than 40 dB. An RF water load is designed using the tapered water wedge. To isolate the SF-6 and water column a ceramic barrier is used. The RTN loss of the designed load is greater than 30 dB at 2856 MHz.