• Planar electron beams in a wiggler magnet array

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/080/02/0277-0282

    • Keywords

       

      Sheet beams; wiggler magnetic field; beam focussing.

    • Abstract

       

      Transport of high current (∼kA range with particle energy $\sim 1$ MeV) planar electron beams is a topic of increasing interest for applications in high-power (1–10 GW) and high-frequency (10–20 GHz) microwave devices such as backward wave oscillator (BWO), klystrons, gyro-BWOs, etc. In this paper, we give a simulated result for transport of electron beams with velocity $V_{b} = 5.23 \times 10^{8}$ cm s-1 , relativistic factor $\gamma = 1.16$, and beam voltage = ∼80 kV in notched wiggler magnet array. The calculation includes self-consistent effects of beam-generated fields. Our results show that the notched wiggler configuration with ∼6.97 kG magnetic field strength can provide vertical and horizontal confinements for a sheet electron beam with 0.3 cm thickness and 2 cm width. The feasibility calculation addresses to a system expected to drive for 13–20 GHz BWO with rippled waveguide parameters as width $w = 3.0$ cm, thickness $t = 1.0$ cm, corrugation depth $h = 0.225$ cm, and spatial periodicity $d = 1.67$ cm.

    • Author Affiliations

       

      Arti Hadap1 K C Mittal2

      1. General Engineering Department, Terna Engineering College, Nerul, Navi Mumbai 400 706, India
      2. Accelerator and Pulsed Power Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
    • Dates

       
  • Pramana – Journal of Physics | News

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