Journal Article

PUBDB-2021-03811

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Strong focusing gradient in a linear active plasma lens

Sjobak, K. N. (Corresponding author) ; Adli, E. ; Corsini, R. ; Farabolini, W. ; Boyle, G. J.DESY* ; Lindstroem, C. A.DESY* ; Meisel, M.DESY* ; Osterhoff, J.DESY* ; Röckemann, J.-H.Extern* ; Schaper, L.Extern*DESY* ; Dyson, A. E.

2021
American Physical Society College Park, MD

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Please use a persistent id in citations: doi:10.1103/PhysRevAccelBeams.24.121306  doi:10.3204/PUBDB-2021-03811

Report No.: arXiv:2012.10680

Abstract: Active plasma lenses are compact devices developed as a promising beam-focusing alternative for charged particle beams, capable of short focal lengths for high-energy beams. We have previously shown that linear magnetic fields with gradients of around 0.3 kT/m can be achieved in argon-filled plasma lenses that preserve beam emittance [C.A. Lindstrøm et al., Phys. Rev. Lett. 121, 194801 (2018)]. Here we show that with argon in a 500 μm diameter capillary, the fields are still linear with a focusing gradient of 3.6 kT/m, which is an order of magnitude higher than the gradients of quadrupole magnets. The current pulses that generate the magnetic field are provided by compact Marx banks, and are highly repeatable. The demonstrated operation with simultaneously high-gradient, linear fields and good repeatability establish active plasma lenses as an ideal device for pulsed particle beam applications requiring very high focusing gradients that are uniform throughout the lens aperture.

Keyword(s): charged particle: beam ; beam: width ; magnetic field: gradient ; beam emittance ; beam focusing ; beam: pulsed ; argon ; accelerator: plasma ; current: time dependence

Note: arXiv title: Multi-kT/m Focusing Gradient in a Linear Active Plasma Lens8 pages, 6 figures. Submitted to Physical Review Applied

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Contributing Institute(s):

1. Technol. zukünft. Teilchenph. Experim. (FTX)
2. Plasma Accelerators (MPA)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. VH-VI-503 - Plasma wakefield acceleration of highly relativistic electrons with FLASH (2015_IFV-VH-VI-503) (2015_IFV-VH-VI-503)
3. ZT-0009 - Plasma Accelerators (2018_ZT-0009) (2018_ZT-0009)

Experiment(s):

1. Measurement at external facility

Appears in the scientific report 2021

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