Numerical modeling of arcs in accelerators

Jim Norem, Zeke Insepov, Thomas Proslier, Sudhakar Mahalingam, Seth Veitzer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We are developing a model of arcing to explain breakdown phenomena in high-gradient rf systems used for particle accelerators. This model assumes that arcs develop as a result of mechanical failure of the surface due to electric tensile stress, ionization of fragments by field emission, and the development of a small, dense plasma that interacts with the surface primarily through self sputtering and terminates as a unipolar arc capable of producing field emitters with high enhancement factors. We are modeling these mechanisms using Molecular Dynamics (mechanical failure, Coulomb explosions, self sputtering), Particle-In-Cell (PIC) codes (plasma evolution), mesoscale surface thermodynamics (surface evolution), and finite element electrostatic modeling (field enhancements). We believe this model may be more widely applicable and we are trying to constrain the physical mechanisms using data from tokamak edge plasmas.

Original languageEnglish
Title of host publicationProceedings - 25th Linear Accelerator Conference, LINAC 2010
Pages205-207
Number of pages3
Publication statusPublished - 2011
Externally publishedYes
Event25th International Linear Accelerator Conference, LINAC 2010 - Tsukuba, Ibaraki, Japan
Duration: Sep 12 2010Sep 17 2010

Other

Other25th International Linear Accelerator Conference, LINAC 2010
CountryJapan
CityTsukuba, Ibaraki
Period9/12/109/17/10

Fingerprint

accelerators
arcs
sputtering
particle accelerators
augmentation
dense plasmas
tensile stress
explosions
field emission
emitters
breakdown
fragments
electrostatics
molecular dynamics
ionization
gradients
thermodynamics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Norem, J., Insepov, Z., Proslier, T., Mahalingam, S., & Veitzer, S. (2011). Numerical modeling of arcs in accelerators. In Proceedings - 25th Linear Accelerator Conference, LINAC 2010 (pp. 205-207)

Numerical modeling of arcs in accelerators. / Norem, Jim; Insepov, Zeke; Proslier, Thomas; Mahalingam, Sudhakar; Veitzer, Seth.

Proceedings - 25th Linear Accelerator Conference, LINAC 2010. 2011. p. 205-207.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Norem, J, Insepov, Z, Proslier, T, Mahalingam, S & Veitzer, S 2011, Numerical modeling of arcs in accelerators. in Proceedings - 25th Linear Accelerator Conference, LINAC 2010. pp. 205-207, 25th International Linear Accelerator Conference, LINAC 2010, Tsukuba, Ibaraki, Japan, 9/12/10.
Norem J, Insepov Z, Proslier T, Mahalingam S, Veitzer S. Numerical modeling of arcs in accelerators. In Proceedings - 25th Linear Accelerator Conference, LINAC 2010. 2011. p. 205-207
Norem, Jim ; Insepov, Zeke ; Proslier, Thomas ; Mahalingam, Sudhakar ; Veitzer, Seth. / Numerical modeling of arcs in accelerators. Proceedings - 25th Linear Accelerator Conference, LINAC 2010. 2011. pp. 205-207
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