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: IT4.00006 : Space Charge Effects on Short-Pulse Beam Dynamics in Vacuum Diodes*
Presenter:
Yves K Heri
(Michigan State University)
Authors:
Yves K Heri
(Michigan State University)
Peng Zhang
(Michigan State University)
We focus onĀ investigating the influence of space charge effects on the dynamics of square-top and Gaussian short-pulse beam profiles using a 1D multiple-sheet model. We consider various factors that contribute to the overall dynamics, including initial profiles, charge densities, pulse widths, and gap potential and distance. Specifically, we pay attention to the current density limit as the pulse length decreases and the beam's distortion as it traverses the gap. Our study involves a detailed analysis of electron sheets phase-space trajectories within the vacuum gap, examining the evolution of pulse profiles during transit. We also investigate the temporal changes in the electric field, potential within the diode. By assessing the distortion of short-pulses with varying charge density and diode parameters, our research offers further insights into the impact of space charge effects on overall beam dynamics
** Work is supported by the Office of Naval Research (ONR) YIP Grant No. N00014-20-1-2681, the 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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