Submit Article
Asian Journal of Physics Vol 32, Nos 9 – 12 (2023) 443-450

Design and experimental evaluation of electron gun and periodic permanent magnet focussing structure of a Ku-band space-TWT

A Roy Choudhury, Chirag Mistry, A Nagaraju, Pawan Pareek, Suneeta Arya and Sanjay Kumar Ghosh
CSIR-Central Electronics Engineering Research Institute, Pilani- 333 031, Rajasthan, India
Dedicated to Prof B N Basu

A low perveance (0.2 μP) electron gun for Ku-band space travelling wave Tube (TWT) has been designed to meet the stringent beam optics requirements. A thorough analysis of sensitivity of the same has been carried out to set the different dimensional tolerances. A confined flow beam with periodic permanent magnets (PPM) focusing has been achieved with the beam ripples less than 10%. The experimental evaluation of the design of the electron gun and the periodic permanent magnet (PPM) focussing structure has been done by developing an actual TWT prototype. © Anita Publications. All rights reserved.
Keywords: Travelling Wave Tube (TWT), Electron Gun, PPM focussing, Space TWT.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
Buy this Article in Print © Anita Publications. All rights reserve

References

  1. J R M Vaughan, synthesis of Pierce gun, IEEE Trans Electron Devices, vol. 28(1981)37– 41.
  2. Sharma R K, Sinha A K, Joshi S N, An improved method for the synthesis of anode aperture for Pierce guns, IEEE Trans Electron Devices, 48(2001)395–397.
  3. Shankar A, Nagaraju A, Choudhury A R, Ghosh S K, Flexi Electrode Electron Gun for Long Life Travelling-Wave Tubes, Prog Electromagn Res Lett, 91(2020)117–122.
  4. Sharma R K, Srivastava V, Low Convergent Confined flow Pierce gun for a space TWT, Int J Electron, 91(2004)97–105.
  5. Sharma R K, Choudhury A R, Arya S, Ghosh S K, Srivastava V, Design and Experimental Evaluation of Dual-Anode Electron Gun and PPM Focusing of Helix TWT, IEEE Trans Electron Devices, 62(2015)3419–3425.
  6. Ghosh T K, Carter.R G, Yadav V, Joshi Y, Gupta R, Srivastava A, Vishwanath R, Joshi S N, An Improved Magnetic Field Simulator-MAGFLD, IEEE International Vacuum Electronics Conference-2004, Monteray CA,USA, Aprill 2004.
  7. Hermannsfeldt W B, Electron trajectory program, No.SLAC-226, Stanford Linear Accelerator Center, Stanford, CA, Nov 1979.
  8. Latha A M, Gahlaut V, Kaur J, Bharti D, Srivastava V, Sharma R K, Ghosh S K, A Novel geometry multi-Stage depressed collector for the efficiency enhancement of space traveling wave tubes, J Infrared Millim Terahertz Waves, 34(2013)53–61..
  9. Latha M, Ghosh S K, An asymmetric highly Efficient Multi-stage Depressed Collector for Space TWTs, IEEE Trans Electron Devices, 63(2016)2139–2144.
  10. Mistry C, Chakraborty S, Arya S, Latha A M, Choudhury A R, Ghosh S K, A Study of Thermal Behavior of Travelling Wave Tube, Proc 19th IEEE International Vacuum Electronics Conference, Monterey, CA, USA, 2018.
  11. Mistry C P, Ghosh S K, Dynamic analysis of a multi-stage depressed collector for high-efficiency travelling wave tubes, J Electromagn Waves Appl, 32(2018)2259–2264.
  12. Arya S, Latha A M, Gahlaut V, Pareek P, Mistry C P, Choudhury A R, Sarkar N, Ghosh S K, Efficiency Enhancement of Multi-Stage Depressed Collector Using an External Magnet in TWTs, IEEE Electron Device Lett, 43(2022)1989–1992.

Related Posts