Modeling arcs
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Date
2011-12
Authors
Insepov, Z.
Norem, J.
Vetizer, S.
Mahalingam, S.
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics
Abstract
Although vacuum arcs were first identified over 110 years ago, they are not yet well understood. We have since developed a model of breakdown and gradient limits that tries to explain, in a self-consistent way: arc triggering, plasma initiation, plasma evolution, surface damage and gradient limits. We use simple PIC codes for modeling plasmas, molecular dynamics for modeling surface breakdown, and surface damage, and mesoscale surface thermodynamics and finite element electrostatic codes for to evaluate surface properties. Since any given experiment seems to have more variables than data points, we have tried to consider a wide variety of arcing (rf structures, e beam welding, laser ablation, etc.) to help constrain the problem, and concentrate on common mechanisms. While the mechanisms can be comparatively simple, modeling can be challenging.
Description
Keywords
vacuum arc model, rf, rf cavity
Citation
Insepov, Z., Norem, J., Vetizer, S., & Mahalingam, S. (2011, December). Modeling arcs. In AIP Conference Proceedings (Vol. 1406, No. 1, pp. 523-530). AIP.