1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Improvement of driver energy deposition in plasma wakefield acceleration by varying transverse offset of sextupole magnets

TUPS115
3 Jun 2025, 16:00
2h
Exhibiton Hall A _Salmon (TWTC)

Exhibiton Hall A _Salmon

TWTC

Poster Presentation MC3.A22 Plasma Wakefield Acceleration Tuesday Poster Session

Speaker

Mason Stobbe (SLAC National Accelerator Laboratory)

Description

Plasma Wakefield Acceleration (PWFA) is a method of accelerating charged particles using a plasma. It has the potential to produce exceptionally large accelerating gradients on the order of 10’s of GeV/m. The FACET-II test facility accelerates pairs of 10 GeV electron bunches to study the PWFA process—a drive bunch to produce a wake in the plasma in a lithium-ion oven, and a witness bunch to be accelerated by PWFA. By using arrangements of sextupole magnets, it is possible to alter the chromaticity and other energy-dependent properties of the beams prior to their entry into the plasma. The purpose of this study was to determine how the transverse offsets of the sextupole magnets could be optimized to increase the amount of energy deposited into the plasma by the drive bunch as this energy deposition is critical to maximising the efficiency of PWFA. To achieve this, a simulation of the FACET-II beamline was performed with sextupole offsets as adjustable parameters in a Bayesian Optimization procedure. The results demonstrate the value of using beam simulations as guides to improve the PWFA process, thereby reducing the need to perform costly experiments at the FACET-II facility.

Region represented America
Paper preparation format LaTeX

Author

Mason Stobbe (SLAC National Accelerator Laboratory)

Co-authors

Douglas Storey (SLAC National Accelerator Laboratory) Robert Holtzapple (California Polytechnic State University)

Presentation materials

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