Design of a thermal loading resilient optical enhancement cavity for operation at 515 nm for X-ray production through inverse Compton scattering in an energy recovery linac
Abstract
A fast and simple method to optimize a high-power optical enhancement cavity is proposed. It is applied to a four-mirror bow-tie cavity operating at 515 nm, which is to be implemented within the PERLE ERL for the production of X-rays through inverse Compton scattering. The optimized figure of merit is the expected X-ray photon rate. Thermal loading is carefully evaluated, giving also a path towards very high average power operation in infrared. One shows that photon rates exceeding 10^11 per second at average energies above 280 keV in apertures of a few miliradians are within reach. For easier comparison with existing Compact X-ray sources providing high rates of photons, the performance of the proposed design is also evaluated for a system delivering infrared laser pulses. It is shown that a source delivering more than 10^13 photons per second is achievable with this design, an unprecedented performance for existing Compton X-ray sources. The design procedure employed here can be easily applied to other applications of high-power high-finesse optical cavities.
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BibTeX
@article{renaux2026design,
title = {{Design of a thermal loading resilient optical enhancement cavity for operation at 515 nm for X-ray production through inverse Compton scattering in an energy recovery linac}},
author = {Alice Renaux and Aurelien Martens and Yann Peinaud and Ronic Chiche and Kevin Dupraz and Marie Jacquet and Daniele Nutarelli and Fabian Zomer},
journal = {Journal of Instrumentation},
year = {2026},
month = sep,
doi = {10.1088/1748-0221/21/09/p09047},
eprint = {2608.04580},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05710355v2},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Design of a thermal loading resilient optical enhancement cavity for operation at 515 nm for X-ray production through inverse Compton scattering in an energy recovery linac
AU - Alice Renaux
AU - Aurelien Martens
AU - Yann Peinaud
AU - Ronic Chiche
AU - Kevin Dupraz
AU - Marie Jacquet
AU - Daniele Nutarelli
AU - Fabian Zomer
PY - 2026
DA - 2026/09/28
JO - Journal of Instrumentation
DO - 10.1088/1748-0221/21/09/p09047
UR - https://hal.science/hal-05710355v2
AB - A fast and simple method to optimize a high-power optical enhancement cavity is proposed. It is applied to a four-mirror bow-tie cavity operating at 515 nm, which is to be implemented within the PERLE ERL for the production of X-rays through inverse Compton scattering. The optimized figure of merit is the expected X-ray photon rate. Thermal loading is carefully evaluated, giving also a path towards very high average power operation in infrared. One shows that photon rates exceeding 10^11 per second at average energies above 280 keV in apertures of a few miliradians are within reach. For easier comparison with existing Compact X-ray sources providing high rates of photons, the performance of the proposed design is also evaluated for a system delivering infrared laser pulses. It is shown that a source delivering more than 10^13 photons per second is achievable with this design, an unprecedented performance for existing Compton X-ray sources. The design procedure employed here can be easily applied to other applications of high-power high-finesse optical cavities.
SN - 1748-0221
ER -