Abstract
The active plasma lens represents a compact and affordable tool with radially symmetric focusing and field gradients up to several kT/m. In order to be used as a focusing device, its effects on the particle beam distribution must be well characterized. Here, we present the experimental results obtained by focusing an high-brightness electron beam by means of a 3 cm-long discharge-capillary pre-filled with Hydrogen gas. We achieved minimum spot sizes of 24 μ m (rms) showing that, during plasma lensing, the beam emittance increases due to nonlinearities in the focusing field. The results have been cross-checked with numerical simulations, showing an excellent agreement.
Original language | English |
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Article number | 104101 |
Journal | Applied Physics Letters |
Volume | 110 |
Issue number | 10 |
DOIs | |
State | Published - 6 Mar 2017 |
Bibliographical note
Publisher Copyright:© 2017 Author(s).