Channel Secondary Electron Multiplier With Extended Dynamic Range

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Abstract

The results of efforts on extending the dynamic range of a channel-type secondary-electron multiplier are reported. Design and process solutions are described, which allowed to achieve an increase of the output current value in linear mode. Preliminary electron scrubbing of the detector is proposed.

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About the authors

Alan I. Maldzigati

Baspik Vladikavkaz Technological Centre

Author for correspondence.
Email: market@baspik.com
ORCID iD: 0009-0006-3267-9558

Senior Engineer at the MCP – Detectors Laboratory

Russian Federation, Vladikavkaz

Galina V. Fedotova

Baspik Vladikavkaz Technological Centre

Email: market@baspik.com

Head of the MCP – Detectors Laboratory

Russian Federation, Vladikavkaz

David G. Samkanashvili

Baspik Vladikavkaz Technological Centre

Email: market@baspik.com

Director of Science and Innovation

Russian Federation, Vladikavkaz

References

  1. Maldzigati A. I., Fedotova G. V., Samkanashvili D. G., Bigulaeva K. A. Vtorichno-elektronnye umnozhiteli kanal’nogo tipa s uluchshennymi harakteristikam. NAUChNOE PRIBOROSTROENIE: perspektivy razrabotki, sozdaniya, razvitiya i ispol’zovaniya. Materialy Vserossijskoj nauchno-prakticheskoj konferencii s mezhdunarodnym uchastiem. – Rostov-na-Donu: Izd-vo YuNC RAN 2024. 176–177. ISBN 978-5-4358-0262-7. Малдзигати А. И., Федотова Г. В., Самканашвили Д. Г., Бигулаева К. А. Вторично-электронные умножители канального типа с улучшенными характеристикам. НАУЧНОЕ ПРИБОРОСТРОЕНИЕ: перспективы разработки, создания, развития и использования. Материалы Всероссийской научно-практической конференции с международным участием. – Ростов-на-Дону: Изд-во ЮНЦ РАН 2024. 176–177. ISBN 978-5-4358-0262-7.
  2. Trovatello, C., Piccinini, G., Forti, S. et al. Ultrafast hot carrier transfer in WS2/graphene large area heterostructures. Npj 2D Mater Appl. 2022;6:24. doi: 10.1038/s41699-022-00299-4
  3. Leimbach, D., Karls, J., Guo, Y. et al. The electron affinity of astatine. Nat Commun. 2020;11:3824. https://doi.org/10.1038/s41467-020-17599-2
  4. Michael Davino, Adam Summers, Tobias Saule, Jan Tross, Edward McManus, Brandin Davis, and Carlos Trallero-Herrero, “Higher-order harmonic generation and strong field ionization with Bessel–Gauss beams in a thin jet geometry. J. Opt. Soc. Am. B. 2021;38: 2194–2200.
  5. Dan, Wang & He, Yongning & Guo, Junjiang & Cai, Yahui & Mao, Zhangsong & Ye, M. Investigation on secondary electron emission characteristics of double-layer structures. Journal of Applied Physics. 2021;129:093304. https://doi.org/10.1063/5.0023325.

Supplementary files

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2. Fig. 1. Secondary electron multiplier SEM-6

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3. Fig. 2. Channeltron temperature during operation

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4. Fig. 3. Conduction current as a function of operating time

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5. Fig. 4. Plateau characteristic curve of the prototype

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6. Fig. 5. Gain M as a function of output current value at different initial gain values

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7. Fig. 6. Gain as a function of output current for foreign channeltrons (six-channel Magnum and typical single-channel Channeltron 4700)

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8. Fig. 7. Time variation of SEM gain M during preconditioning for gain stabilization at different initial gain values and different input signal levels (for different values of transmitted charge Q)

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Copyright (c) 2025 Maldzigati A.I., Fedotova G.V., Samkanashvili D.G.