- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Dephasingless Laser Wakefield Acceleration
摘要： Laser wakefield accelerators (LWFAs) produce extremely high gradients enabling compact accelerators and radiation sources but face design limitations, such as dephasing, occurring when trapped electrons outrun the accelerating phase of the wakefield. Here we combine spherical aberration with a novel cylindrically symmetric echelon optic to spatiotemporally structure an ultrashort, high-intensity laser pulse that can overcome dephasing by propagating at any velocity over any distance. The ponderomotive force of the spatiotemporally shaped pulse can drive a wakefield with a phase velocity equal to the speed of light in vacuum, preventing trapped electrons from outrunning the wake. Simulations in the linear regime and scaling laws in the bubble regime illustrate that this dephasingless LWFA can accelerate electrons to high energies in much shorter distances than a traditional LWFA—a single 4.5 m stage can accelerate electrons to TeV energies without the need for guiding structures.
关键词： ponderomotive force,phase velocity,Laser wakefield accelerators,spatiotemporal pulse shaping,dephasing
更新于2025-09-23 15:21:01
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Seamless multistage laser-plasma acceleration toward future high-energy colliders
摘要： Multistage laser wakefield accelerators that are coupled with variable-curvature plasma channels make it possible to efficiently accelerate electrons to high energies that exceed dephasing and pump depletion limits. Seamless coupling between laser and particle beams may envisage future energy-frontier colliders of revolutionarily small size and cost.
关键词： high-energy colliders,electron acceleration,plasma channels,laser wakefield accelerators
更新于2025-09-11 14:15:04