Bulletin of the American Physical Society
76th Annual Gaseous Electronics Conference
Volume 68, Number 9
Monday–Friday, October 9–13, 2023; Michigan League, Ann Arbor, Michigan
Session IT4: Poster Session I; Exhibition & Coffee (4:00pm-6:00pm)
4:00 PM,
Tuesday, October 10, 2023
Room: Michigan League, Ballroom
Abstract: IT4.00008 : Space Charge Effects on Beam-Wave Interaction at the Output Gap of Vacuum Electron Tube*
Presenter:
Md Wahidur Rahman
(Michigan State University)
Authors:
Md Wahidur Rahman
(Michigan State University)
Peng Zhang
(Michigan State University)
Collaborations:
Md Wahidur Rahman, Peng Zhang
The beam current and input impedance are investigated for different grid and anode potentials that affect the instantaneous current. We analyze the device parameters, including beam diameter, drift tube diameter, and disk thickness of the disk model of the IOT for large signals to measure device performance and the variation in space charge fields, gap fields, and normalized velocity through the beam interaction gap. We compare the simple and disk models with and without space charge to the experimental results, including the beam current, RF output power, electron efficiency, and gain (dB) in identifying the appropriate parameters [1,2].
References:
1. Carter, R.G., 2010. Simple model of an inductive output tube. IEEE transactions on electron devices, 57(3), pp.720-725
2. Orrett, J.F., Moss, A.J., Corlett, P., Buckley, S. and Rains, S.P., 2006. IOT testing at the ERLP. In Proc. EPAC 2006 (pp. 1382-84)
*This work is supported by the Office of Naval Research (ONR) YIP Grant No. N00014-20-1-2681, and Air Force Office of Scientific Research (AFOSR) Grant No. FA9550-20-1-0409, and the Air Force Office of Scientific Research (AFOSR) Award No. FA9550-22-1-0523.
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