Speaker
Description
There is a growing demand for generating and transporting very short femtosecond-scale, high-charge-density relativistic electron bunches [1-2]*. Applications range from extreme light sources such as free-electron lasers to future linear colliders. Laser-plasma wakefield accelerators (LWFA) [3] offer a promising approach for compact high-gradient acceleration, but electrons generated directly from the plasma in a non-linear self-injection process show poor stability and limited control. External injection [4-5] provides a solution but requires extremely short electron bunches with precise control, which is currently limited by compression and timing jitter in conventional radio-frequency accelerators [6].
We show that laser-driven terahertz (THz) control of electron bunches can enable phase-locked, laser-synchronized compression with suppressed time jitter [7]. Using computational methods, we explore the external injection of such THz-controlled electron bunches into a LWFA. By utilizing intrinsic synchronization and THz-driven energy manipulation, we demonstrate significant stabilization in external injection while preserving high bunch quality.
Footnotes
[1] Rosenzweig et al., Nucl. Instrum. Meth. A593, 39 (2008)
[2] C. B. Schroeder et al., J. Instrum. 18, T06001 (2023)
[3] Tajima & Dawson, Phys. Rev. Lett. 43, 267 (1979)
[4] Wu et al., Nat. Phys. 17, 801 (2021)
[5] L. Corner, 20th Advanced Accelerator Concepts Workshop (2024)
[6] Zhu et al., Phys. Rev. Accel. Beams 19, 054401 (2016)
[7]* Hibberd et al., arXiv:2508.20685 [physics.acc-ph] (2025)
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