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Partial Focusing of Coherent Optical Transition Radiation and Measurement of Transverse Size of Femtosecond Electron Bunches

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Russian Physics Journal Aims and scope

Coherent optical transition radiation (COTR) from femtosecond electron bunches is simulated using an earlier proposed model. It is shown that partial screening of the COTR field followed by focusing with a lens allows increasing the spatial resolution and makes it possible to measure transverse bunch sizes accurate within a few microns. It is demonstrated that the most reasonable lens screening ratio equals to 50%. Given this, it is possible to eliminate the ring-like structure typically observed on bunch images as a result of coherence.

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Authors and Affiliations

  1. National Research Tomsk Polytechnic University, Tomsk, Russia

    T. M. Gusvitskii & A. P. Potylitsyn

Authors
  1. T. M. Gusvitskii
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  2. A. P. Potylitsyn
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Correspondence to T. M. Gusvitskii.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 30–36, December, 2020.

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Gusvitskii, T.M., Potylitsyn, A.P. Partial Focusing of Coherent Optical Transition Radiation and Measurement of Transverse Size of Femtosecond Electron Bunches. Russ Phys J 63, 2076–2084 (2021). https://doi.org/10.1007/s11182-021-02277-7

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  • DOI: https://doi.org/10.1007/s11182-021-02277-7

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