The generation of high-power coherent soft x-ray pulses of sub-100 as duration and 10 nm wavelength using beams from a GeV energy plasma wakefield accelerator has been recently investigated in Emma []. As a future upgrade to this concept, this contribution investigates scaling to shorter x-ray wavelengths by cascading undulators tuned to higher harmonics of the fundamental. We present two simulation studies for plasma-driven attosecond harmonic generation schemes with final photon wavelengths of 2 and 0.40 nm. We demonstrate in these schemes that using undulators with retuned fundamental frequencies can produce GW-scale pulses of sub-nm radiation with tens of attosecond-scale pulse lengths, an order of magnitude shorter than current state-of-the-art attosecond x-ray free electron lasers (XFELs). This multipulse multicolor operation will be broadly applicable to attosecond pump-probe experiments.
Hessami, Rafi, et al. "Wavelength scaling and multicolor operation of a plasma-driven attosecond x-ray source via harmonic generation." Physical Review Accelerators and Beams, vol. 27, no. 7, Jul. 2024. https://doi.org/10.1103/PhysRevAccelBeams.27.070701
Hessami, Rafi, Morgan, Jenny, Robles, River, et al., "Wavelength scaling and multicolor operation of a plasma-driven attosecond x-ray source via harmonic generation," Physical Review Accelerators and Beams 27, no. 7 (2024), https://doi.org/10.1103/PhysRevAccelBeams.27.070701
@article{osti_2397362,
author = {Hessami, Rafi and Morgan, Jenny and Robles, River and Larsen, Kirk A. and Marinelli, Agostino and Emma, Claudio},
title = {Wavelength scaling and multicolor operation of a plasma-driven attosecond x-ray source via harmonic generation},
annote = {The generation of high-power coherent soft x-ray pulses of sub-100 as duration and 10 nm wavelength using beams from a GeV energy plasma wakefield accelerator has been recently investigated in Emma []. As a future upgrade to this concept, this contribution investigates scaling to shorter x-ray wavelengths by cascading undulators tuned to higher harmonics of the fundamental. We present two simulation studies for plasma-driven attosecond harmonic generation schemes with final photon wavelengths of 2 and 0.40 nm. We demonstrate in these schemes that using undulators with retuned fundamental frequencies can produce GW-scale pulses of sub-nm radiation with tens of attosecond-scale pulse lengths, an order of magnitude shorter than current state-of-the-art attosecond x-ray free electron lasers (XFELs). This multipulse multicolor operation will be broadly applicable to attosecond pump-probe experiments. Published by the American Physical Society 2024 },
doi = {10.1103/PhysRevAccelBeams.27.070701},
url = {https://www.osti.gov/biblio/2397362},
journal = {Physical Review Accelerators and Beams},
issn = {ISSN PRABCJ},
number = {7},
volume = {27},
place = {United States},
publisher = {American Physical Society},
year = {2024},
month = {07}}
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 583, Issue 2-3https://doi.org/10.1016/j.nima.2007.09.019