Optical enhancement cavities operated at GHz repetition rate in burst mode regime

Abstract

The design and experimental validation of a burst-mode optical cavity tailored for inverse Compton scattering X-ray sources is presented. The system is tailored for a room temperature linear accelerator operating at 880 MHz and utilizes a common-path injection scheme for both locking and burst laser pulses to optimize stability and simplicity. We detail the cavity construction, the laser system, and performance under two enhancement cavity finesse regimes (2000 and 7300), highlighting the sensitivity of cavity filling to carrier-envelope offset parameters. A theoretical model is developed to explain observed power dynamics and to guide optimization for high-energy storage. Our findings demonstrate reliable storage exceeding 300 mJ over 20 minutes, paving the way toward compact, high-flux inverse Compton scattering X-ray sources.

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BibTeX

@misc{dupraz2026optical,
  title = {{Optical enhancement cavities operated at GHz repetition rate in burst mode regime}},
  author = {Kevin Dupraz and Frédéric Blanc and Ronic Chiche and Aurélien Martens and Antoine Courjaud and Loïc Amoudry and Titouan Le Barillec and Daniele Nutarelli and Yann Peinaud and Fabian Zomer},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.37619},
  eprint = {2609.37619},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.37619},
}

RIS

TY  - UNPB
TI  - Optical enhancement cavities operated at GHz repetition rate in burst mode regime
AU  - Kevin Dupraz
AU  - Frédéric Blanc
AU  - Ronic Chiche
AU  - Aur{é}lien Martens
AU  - Antoine Courjaud
AU  - Loïc Amoudry
AU  - Titouan Le Barillec
AU  - Daniele Nutarelli
AU  - Yann Peinaud
AU  - Fabian Zomer
PY  - 2026
DA  - 2026/09/29
PB  - arXiv
DO  - 10.48550/arxiv.2609.37619
UR  - https://arxiv.org/abs/2609.37619
AB  - The design and experimental validation of a burst-mode optical cavity tailored for inverse Compton scattering X-ray sources is presented. The system is tailored for a room temperature linear accelerator operating at 880 MHz and utilizes a common-path injection scheme for both locking and burst laser pulses to optimize stability and simplicity. We detail the cavity construction, the laser system, and performance under two enhancement cavity finesse regimes (2000 and 7300), highlighting the sensitivity of cavity filling to carrier-envelope offset parameters. A theoretical model is developed to explain observed power dynamics and to guide optimization for high-energy storage. Our findings demonstrate reliable storage exceeding 300 mJ over 20 minutes, paving the way toward compact, high-flux inverse Compton scattering X-ray sources.
ER  -

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