10–15 Aug 2025
SAFE Credit Union Convention Center
America/Los_Angeles timezone

Laser-Ionized Plasma Sources for Plasma Wakefield Accelerators: Alignment Technique, Tolerance, and Applications

WEP053
13 Aug 2025, 16:00
2h
SAFE Credit Union Convention Center

SAFE Credit Union Convention Center

1401 K St, Sacramento, CA 95814
Poster Presentation MC3 - Novel Particle Sources, Acceleration Techniques, and their Applications WEP: Wednesday Poster Session

Speaker

Valentina Lee (University of Colorado Boulder)

Description

Plasma wakefield accelerators (PWFA) are promising candidates for next-generation colliders due to their ability to sustain extremely high acceleration gradients. Laser-ionized plasma sources offer key advantages for PWFA, including precise control over the transverse and longitudinal plasma density profiles for emittance preservation, tunable plasma column widths suited for positron acceleration, and resilience to heat deposition. A critical experimental challenge, however, is the precise alignment of the plasma source to the electron beam and maintaining that alignment over time. We report on a novel alignment technique developed at the Facility for Advanced Accelerator Experimental Tests II (FACET-II), enabling high-precision alignment of a 1-meter-long laser-ionized plasma source to a 10 GeV, 1.6 nC electron beam with a transverse accuracy better than 10 µm, limited primarily by laser pointing jitter. We present our methodology, discuss the alignment tolerances between the drive beam and the laser-ionized plasma, and explore future opportunities for using narrow plasma columns for positron acceleration.

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Author

Valentina Lee (University of Colorado Boulder)

Co-authors

Robert Ariniello (SLAC National Accelerator Laboratory) Douglas Storey (SLAC National Accelerator Laboratory) Sebastien Corde (SLAC National Accelerator Laboratory) Claudio Emma (SLAC National Accelerator Laboratory) Spencer Gessner (SLAC National Accelerator Laboratory) Mark Hogan (SLAC National Accelerator Laboratory) Alexander Knetsch (Laboratoire d'Optique Appliquée) Nathan Majernik (SLAC National Accelerator Laboratory) Brendan O'Shea (SLAC National Accelerator Laboratory) Michael Litos (University of Colorado Boulder)

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