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Description
Microbunching damping in relativistic electron beams is strongly influenced by inverse dispersive transport terms that couple transverse phase-space coordinates to the longitudinal displacement. In this work, we investigate the use of microbunching damping as a diagnostic and optimization tool for lattice tuning in linear accelerators. In particular, residual dispersion is minimized by maximizing the observed microbunching amplification.
Two representative cases are studied: tuning of a dogleg quadrupole strength and transverse sextupole positioning in a W-chicane. For both systems, experimental measurements are compared with numerical particle tracking simulations and analytical predictions.
The results demonstrate that microbunching-based dispersion characterization can serve as a faster alternative to conventional dispersion measurements, enabling more efficient lattice optimization.
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