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Injector for dielectric laser accelerators based on an ultracold electron source and a magnet design avoiding apparent emittance growth
Ameya Patwardhan, Simona Borrelli, Bas van der Geer, Jom Luiten, Julius Huijts
https://arxiv.org/abs/2510.09831

Injector for dielectric laser accelerators based on an ultracold electron source and a magnet design avoiding apparent emittance growth
Dielectric Laser Acceleration holds the promise of extremely high acceleration gradients in laser-driven miniaturized accelerator structures. However, sub-relativistic experimental demonstration has so far been limited by bunch charges well below 1 electron per bunch due to the low acceptance of these 'accelerator-on-a-chip' devices. Here, we propose a novel design for an injector tailor made for dielectric laser acceleration, based on just-above-threshold ionization of laser-cooled atoms. The …