TY  - JOUR
AU  - Diederichs, Severin
AU  - Benedetti, Carlo
AU  - Pousa, Angel Ferran
AU  - Sinn, Alexander
AU  - Osterhoff, Jens
AU  - Schroeder, Carl B.
AU  - Thévenet, Maxence
TI  - Resonant Emittance Mixing of Flat Beams in Plasma Accelerators
JO  - Physical review letters
VL  - 133
IS  - 26
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PUBDB-2025-00234
M1  - arXiv:2403.05871
SP  - 265003
PY  - 2024
N1  - Preprint available at https://arxiv.org/abs/2403.05871
AB  - Linear colliders rely on high-quality flat beams to achieve the desired event rate while avoiding potentially deleterious beamstrahlung effects. Here, we show that flat beams in plasma accelerators can be subject to quality degradation due to emittance mixing. This effect occurs when the beam particles’ betatron oscillations in a nonlinearly coupled wakefield become resonant in the horizontal and vertical planes. Emittance mixing can lead to a substantial decrease of the luminosity, the main quantity determining the event rate. In some cases, the use of laser drivers or flat particle beam drivers may decrease the fraction of resonant particles and, hence, mitigate emittance deterioration.
KW  - accelerator: plasma (INSPIRE)
KW  - accelerator: wake field (INSPIRE)
KW  - plasma: wake field (INSPIRE)
KW  - coupling: transverse (INSPIRE)
KW  - beam emittance: transverse (INSPIRE)
KW  - laser (INSPIRE)
KW  - beamstrahlung (INSPIRE)
KW  - betatron oscillation: resonance (INSPIRE)
LB  - PUB:(DE-HGF)16
C6  - 39879001
UR  - <Go to ISI:>//WOS:001396117200003
DO  - DOI:10.1103/PhysRevLett.133.265003
UR  - https://bib-pubdb1.desy.de/record/622196
ER  -