Multigrid Algorithms for the Fast Calculation of Space-Charge Effects in Accelerator Design

Pöplau, Gisela; Rienen, Ursula van; Geer, Bas van der; Loos, Marieke de

doi:10.1109/tmag.2004.825415

Cited by 46 publications

(28 citation statements)

References 3 publications

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“…It provides full 3D particle tracking and allows beam line components to be arbitrarily positioned and oriented. SC effects are treated with the model described in [20] but can be switched off to simulate purely ballistic propagation. In this part of the simulations we neglect the defocusing originating from the exit holes, in order to analyze the effect of bunching with and without SC.…”

Section: Simulations Of Dc-ac Accelerationmentioning

confidence: 99%

Hybrid dc–ac electron gun for fs-electron pulse generation

et al. 2007

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Section: Simulations Of Dc-ac Accelerationmentioning

confidence: 99%

Hybrid dc–ac electron gun for fs-electron pulse generation

et al. 2007

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“…Mostly they represent highly idealized distributions, important for basic physical understanding, but remote from actual conditions. In accelerator physics uniform 3D ellipsoids are used nowadays to benchmark Poisson solvers [4] and to quickly estimate the effect of space-charge forces in beam lines [5].…”

Section: How To Realize Uniform Three-dimensional Ellipsoidal Electromentioning

confidence: 99%

How to Realize Uniform Three-Dimensional Ellipsoidal Electron Bunches

et al. 2004

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“…Instead, an iterative Multigrid solver, with numerical effort comparable to equidistant FFT methods, has been implemented similar to the one discussed in detail by Pöeplau [11]. After the calculation of the self-field is attained, a standard fourth-order Runge Kutta scheme is used to integrate the relativistic equations for the particle trajectories [12].…”

Section: Particle Modelmentioning

confidence: 99%

Particle Simulation of Ultrafast Closing Switch at Sub-Atmospheric Pressures

Chaparro

Krompholz

Neuber

et al. 2008

2008 IEEE International Power Modulators and High-Voltage Conference

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Previous research at Texas Tech University has been conducted on the physics governing highly over-voltaged gas breakdown resulting from ultrafast applied voltage pulses with risetimes less than 200 ps and durations less than 400 ps. Experimental results have shown that the breakdown characteristics of such events significantly differ from those observed in standard gas breakdown and a complete understanding of the physics behind ultrafast discharges is far from being clear. As a companion to experimental work, a numerical model is an attractive means of discerning more about the underlying physics behind such events. In this paper, a relativistic, Particle in Cell model utilizing Monte-Carlo calculations is discussed as a way to directly simulate the experimental conditions, with similar geometry, background gas, and pulse characteristics. Diagnostic output from the simulation includes space-charge development over time, field and particle energy distributions, and particle number growth rates and spatial distributions. An overview of the structure and formulation behind the simulation code is given followed by a comparison of output data to experimental results. Specific points of interest for comparison include formative and statistical delay times, examination of inhomogeneous ionization regions in the discharge, and the behavior of high-energy particles in the runaway state.

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Multigrid Algorithms for the Fast Calculation of Space-Charge Effects in Accelerator Design

Cited by 46 publications

References 3 publications

Hybrid dc–ac electron gun for fs-electron pulse generation

Hybrid dc–ac electron gun for fs-electron pulse generation

How to Realize Uniform Three-Dimensional Ellipsoidal Electron Bunches

Particle Simulation of Ultrafast Closing Switch at Sub-Atmospheric Pressures

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