Emittance Preservation in an Aberration-Free Active Plasma Lens

Lindstrøm, C. A.; Corsini, R.; Meisel, M.; Dyson, A. E.; Sjobak, K. N.; Schaper, L.; Osterhoff, J.; Farabolini, W.; Boyle, Gregory James; Adli, E.; Röckemann, J.-H.; Hooker, S. M.

doi:10.1103/PhysRevLett.121.194801

Report/Journal Article

PUBDB-2018-04763

Emittance Preservation in an Aberration-Free Active Plasma Lens

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

2018
APS College Park, Md.

Physical review letters 121(19), 194801 (2018) [10.1103/PhysRevLett.121.194801]

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Please use a persistent id in citations: doi:10.1103/PhysRevLett.121.194801 doi:10.3204/PUBDB-2018-04763

Report No.: arXiv:1808.03691

Abstract: Active plasma lensing is a compact technology for strong focusing of charged particle beams, which has gained considerable interest for use in novel accelerator schemes. While providing $kT/m$ focusing gradients, active plasma lenses can have aberrations caused by a radially nonuniform plasma temperature profile, leading to degradation of the beam quality. We present the first direct measurement of this aberration, consistent with theory, and show that it can be fully suppressed by changing from a light gas species (helium) to a heavier gas species (argon). Based on this result, we demonstrate emittance preservation for an electron beam focused by an argon-filled active plasma lens.

Classification:

ddc:530

Contributing Institute(s):

Forschung Linear Accelerator (FLA)

Research Program(s):

Experiment(s):

Measurement at external facility

Appears in the scientific report 2018

Database coverage:
Medline

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