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    Area of Science:

    • Physics
    • Engineering
    • Materials Science

    Background:

    • Traditional X-ray sources often lack tunability and compactness.
    • Advancements in particle accelerators enable novel X-ray generation techniques.

    Purpose of the Study:

    • To present the first measurements of a compact, tunable inverse Compton scattering (ICS) X-ray source.
    • To characterize the performance of the ICS source in terms of flux, energy tunability, bandwidth, pulse length, and polarization.
    • To assess the potential of the source for various applications.

    Main Methods:

    • Utilized an inverse Compton scattering process to generate X-rays.
    • Employed a high-resolution spectral camera for spectral analysis.
    • Measured X-ray flux, photon energy, bandwidth, pulse duration, and polarization.
    • Simulations were used to validate experimental measurements.

    Main Results:

    • Achieved a photon flux of 1.2 × 10^3 photons per shot.
    • Demonstrated continuous tuning of photon energy from 5.8 keV to 10.7 keV with a 4% bandwidth.
    • Measured an upper bound of 2.8 ps for the X-ray pulse length.
    • Confirmed full control over X-ray polarization.
    • Current average brilliance is 10^5 photons/(s × mrad^2 × mm^2 × 0.1% BW), with potential for 10^12 photons/(s × mrad^2 × mm^2 × 0.1% BW) up to 40 keV.

    Conclusions:

    • The developed ICS X-ray source is compact, tunable, and offers high performance.
    • The source's characteristics make it suitable for in-house applications in laboratories, industry, museums, and hospitals.
    • Future optimizations can significantly enhance the source's brilliance and energy range.