Shutang Meng
(Department of Physics, University of Colorado Boulder)
Powerful and compact beam transport systems are essential for plasma-based accelerators, and plasma lenses provide a promising path forward. While plasma lenses have demonstrated strong, axisymmetric focusing, their application to advanced beam manipulation—such as chromatic correction—remains largely unexplored. Here we report progress on a quasilinear passive plasma lens experiment conducted at FACET-II. In addition to achieving focusing gradients exceeding 200 kT/m, the lens reduces the spread of slice focal positions, yielding a near-common focus at 27 ± 4 cm downstream of the lens, compared to an initial chromatic distribution of 37 ± 12 cm. The lens is ultra-compact with only a submillimeter length along the beamline and preserves the energy spread of both drive and witness bunches at the per-mille level. Ongoing efforts in passive plasma lens research at FACET-II will also be discussed.
Shutang Meng
(Department of Physics, University of Colorado Boulder)
Doug Storey
(SLAC National Accelerator Laboratory)
Robert Ariniello
(SLAC National Accelerator Laboratory)
Sebastien Corde
(Laboratoire d’Optique Appliquée (LOA))
Christopher Doss
(University of Colorado Boulder)
Claudio Emma
(SLAC National Accelerator Laboratory)
Spencer Gessner
(SLAC National Accelerator Laboratory)
Claire Hansel
(University of Colorado Boulder)
Mark Hogan
(SLAC National Accelerator Laboratory)
Chan Joshi
(University of California Los Angeles)
Alexander Knetsch
(SLAC National Accelerator Laboratory)
Valentina Lee
(University of Colorado Boulder)
Nathan Majernik
(SLAC National Accelerator Laboratory)
Kenneth Marsh
(University of California Los Angeles)
Brendan O'Shea
(SLAC National Accelerator Laboratory)
Ivan Rajkovic
(SLAC National Accelerator Laboratory)
Elena Ros
(University of Colorado at Boulder)
Chaojie Zhang
(University of California Los Angeles)
Michael Litos
(University of Colorado Boulder)
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