AAC24 Advanced Accelerator Concepts Workshop

Measuring the beam-breakup instability in beam-driven plasma wakefield accelerators

Not scheduled

20m

room 2324 (Upper Level)

WG3

Speaker

Ole Gunnar Finnerud (University of Oslo)

Description

Beam-driven plasma wakefield acceleration can sustain accelerating fields on
the GV/m scale, making it well-suited for linear collider applications. However,
in recent years, an efficiency-instability relation has been proposed, which limits
the energy transfer efficiency from the wake to the trailing bunch that can be achieved
without inducing transverse instabilities detrimental to the transverse phase
space of the accelerated bunch. We discuss the efficiency-instability relation for
a transversely misaligned trailing bunch and a novel method that can be used to
identify the beam-breakup instability (BBU) on a dispersive dipole spectrometer
and quantify the size of the instability. We show preliminary results using data
from the E300 experiment at the FACET-II facility, showcasing the use of this
method.