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Updated: Jun 16, 2026

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One-dimensional photon-counting detector array for use at EUV and soft x-ray wavelengths.

J G Timothy, R L Bybee

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    PubMed
    Summary

    This study evaluated a 1D photon-counting detector array using microchannel plates. It achieved 50-micrometer spatial resolution with high detection efficiency below 800 Å, despite dynamic range limitations.

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    Area of Science:

    • Physics
    • Instrumentation Science

    Background:

    • Microchannel array plates are crucial for sensitive photon detection.
    • Developing advanced photon-counting detector arrays is essential for various scientific applications.

    Purpose of the Study:

    • To evaluate the laboratory performance of a one-dimensional photon-counting detector array.
    • To assess its spatial resolution and detection efficiency across a specific wavelength range.

    Main Methods:

    • The detector array, based on microchannel array plates, was tested in a laboratory setting.
    • Performance was evaluated across wavelengths from 461 Å to 1216 Å.
    • Charge pulses were collected on a proximity-focused anode array with 64 linear electrodes.

    Main Results:

    • The detector achieved a theoretical spatial resolution of 50 micrometers.
    • Detection efficiency below 800 Å matched conventional channel electron multipliers.
    • Ion-feedback effects limited the dynamic range of the microchannel array plates.

    Conclusions:

    • The developed photon-counting detector array shows promise for high-resolution detection in the ultraviolet spectrum.
    • Further improvements in microchannel array plate technology are needed to overcome dynamic range limitations.