A1 Journal article (refereed)
A study of the optical effect of plasma sheath in a negative ion source using IBSIMU code (2020)

George, A., Kalvas, T., Melanson, S., Savard, N., Potkins, D., Dehnel, M., & Broderick, N. G. R. (2020). A study of the optical effect of plasma sheath in a negative ion source using IBSIMU code. Review of Scientific Instruments, 91(1), Article 013306. https://doi.org/10.1063/1.5129603

JYU authors or editors

Publication details

All authors or editors: George, Anand; Kalvas, Taneli; Melanson, Stephane; Savard, Nicolas; Potkins, Dave; Dehnel, Morgan; Broderick, Neil G. R.

Journal or series: Review of Scientific Instruments

ISSN: 0034-6748

eISSN: 1089-7623

Publication year: 2020

Volume: 91

Issue number: 1

Article number: 013306

Publisher: American Institute of Physics

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1063/1.5129603

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67425

Additional information: Contributed paper, published as part of the Proceedings of the 18th International Conference on Ion
Sources, Lanzhou, China, September 2019.


A plasma sheath inside an ion source has a strong focusing effect on the formation of an ion beam from the plasma. Properties of the beam depend on the shape and location of the plasma sheath inside the source. The most accessible experimental data dependent on the plasma sheath are the beam phase space distribution. Variation of beam emittance is a reflection of the properties of the plasma sheath, with minimum emittance for the optimal shape of the plasma sheath. The location and shape of the plasma sheath are governed by complex physics and can be understood by simulations using plasma models in particle tracking codes like IBSimu. In the current study, a model of the D-Pace’s TRIUMF licensed filament powered volume-cusp negative ion source is made using the IBSimu code. Beam emittance trends are compared between experiments and simulations.

Keywords: plasma physics; particle accelerators

Free keywords: plasma sheath; negative ion source

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 1

Last updated on 2021-07-07 at 21:33