• Open Access

Strong focusing gradient in a linear active plasma lens

K. N. Sjobak, E. Adli, R. Corsini, W. Farabolini, G. Boyle, C. A. Lindstrøm, M. Meisel, J. Osterhoff, J.-H. Röckemann, L. Schaper, and A. E. Dyson
Phys. Rev. Accel. Beams 24, 121306 – Published 29 December 2021

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 500μm 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.

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  • Received 30 September 2021
  • Accepted 10 December 2021

DOI:https://doi.org/10.1103/PhysRevAccelBeams.24.121306

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Accelerators & Beams

Authors & Affiliations

K. N. Sjobak1,2,*, E. Adli1, R. Corsini2, W. Farabolini2, G. Boyle3, C. A. Lindstrøm3, M. Meisel3, J. Osterhoff3, J.-H. Röckemann3, L. Schaper3, and A. E. Dyson4

  • 1Department of Physics, University of Oslo, 0316 Oslo, Norway
  • 2CERN, CH-1211 Geneva 23, Switzerland
  • 3Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
  • 4Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom

  • *k.n.sjobak@fys.uio.no

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Vol. 24, Iss. 12 — December 2021

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