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High temporal resolution coordinate-sensitive detector with gallium-arsenide photocathode

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Abstract

We present a coordinate-sensitive detector with a gallium-arsenide photocathode—a vacuum photoelectronic device featuring microchannel gain and a multi-element collector—which had several prototypes manufactured. Quantum efficiency of the photocathode amounts to 48% at maximum, its sensitivity range spans from 350 to 900 nm. The microchannel gain unit consists of two plates with an ion barrier film at the entrance. The coordinates of electron avalanches are determined using a 16-element collector. The spatial resolution, diameter of the working field, and temporal resolution of the detector are equal to 25 µm, 18 mm, and about 1 µs, respectively.

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Authors and Affiliations

  1. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz, 369167, Russia

    V. G. Debur, G. M. Beskin, S. V. Karpov & V. L. Plokhotnichenko

  2. Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 13, Novosibirsk, 630090, Russia

    A. S. Terekhov, S. S. Kosolobov & G. E. Shaibler

Authors
  1. V. G. Debur
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  2. G. M. Beskin
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  3. S. V. Karpov
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  4. V. L. Plokhotnichenko
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  5. A. S. Terekhov
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  6. S. S. Kosolobov
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  7. G. E. Shaibler
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Additional information

Original Russian Text © V.G. Debur, G.M. Beskin, S.V. Karpov, V.L. Plokhotnichenko, A.S. Terekhov, S.S. Kosolobov, G.E. Shaibler, 2009, published in Astrofizicheskij Byulleten, 2009, Vol. 64, No. 4, pp. 404–410.

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Debur, V.G., Beskin, G.M., Karpov, S.V. et al. High temporal resolution coordinate-sensitive detector with gallium-arsenide photocathode. Astrophys. Bull. 64, 386–391 (2009). https://doi.org/10.1134/S1990341309040087

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  • DOI: https://doi.org/10.1134/S1990341309040087

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