Design and Characterization of Rippled Wall Slow Wave Structure for X-Band PASOTRON


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Ahmed, M and Kumar, N and Pal, UN and Srivastava, V and Prakash, R (2013) Design and Characterization of Rippled Wall Slow Wave Structure for X-Band PASOTRON. In: IEEE International Conference on Pulsed Power & Plasma Science (PPPS-2013), June 16-21, 2013, San Francisco, CA, USA. (Submitted)

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The PASOTRON mainly consists of plasma cathode electron gun (PCE-gun), periodic slow wave structure and radiating antenna [1] . An X-Band PASOTRON is being developed, in which, a sinusoidal rippled wall waveguide is chosen as slow wave structure (SWS). The reasons for this choice are that it has relatively simple structure, provides fairly effective conversion of electron-beam energy into radiation, and can be easily filled with plasma. We present an experimental and simulation study of a slow wave structure which consists of a cylindrical waveguide with sinusoidal varying radius. A similar version of this structure was used in numerous X-band relativistic high-power backward wave oscillator experiments [2], however, until now there has not been a systematic analysis of its electromagnetic properties [3]. The purpose of this study is to experimentally determine the dispersion relation of the structure and compare it with the simulation results. The resonant method [4] we use is simple and requires less time and effort as compared to non-resonant methods [5] where we have to move a bead through the structure which makes process complicated. In the technique we use , an advantage of our structure being a resonant structure has been taken.

Item Type: Conference or Workshop Item (Poster)
Subjects: Microwave Tubes > Plasma Devices
Divisions: Microwave Tubes
Depositing User: Mr. Jitendra Nath Bajpai
Date Deposited: 26 Jun 2013 11:41
Last Modified: 26 Jun 2013 11:41

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