Planar electron beams in a wiggler magnet array

Pramana

K C Mittal¹  Arti Hadap1² 

[1] Accelerator and Pulsed Power Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India$$;General Engineering Department, Terna Engineering College, Nerul, Navi Mumbai 400 706, India$$

关键词: Sheet beams;    wiggler magnetic field;    beam focussing.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Transport of high current (∼kA range with particle energy ∼ 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 $V_{b} = 5.23 × 10^{8}$ cm s-1 , relativistic factor 𝛾 = 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.

【 授权许可】

Unknown