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Progress on the PICOSEC-micromegas detector development: Towards a precise timing, radiation hard, large-scale particle detector with segmented readout

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Veenhof, Rob

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Kordas, K.
Bortfeldt, J.
Brunbauer, F.
David, C.
Desforge, D.
Fanourakis, G.
Franchi, J.
Gallinaro, M.
Garcia, F.
Giomataris, I.

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Elsevier

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Abstract

This contribution describes the PICOSEC-Micromegas detector which achieves a time resolution below 25 ps. In this device the passage of a charged particle produces Cherenkov photons in a radiator, which then generate electrons in a photocathode and these photoelectrons enter a two-stage Micromegas with a reduced drift region and a typical anode region. The results from single-channel prototypes (demonstrating a time resolution of 24 ps for minimum ionizing particles, and 76 ps for single photoelectrons), the understanding of the detector in terms of detailed simulations and a phenomenological model, the issues of robustness and how they are tackled, and preliminary results from a multi-channel prototype are presented (demonstrating that a timing resolution similar to that of the single-channel device is feasible for all points across the area covered by a multi-channel device).

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Bu çalışma, 18-22, Şubat 2019 tarihlerinde Vienna[Avusturya]’da düzenlenen 15. Vienna Conference on Instrumentation (VCI) Kongresi‘nde bildiri olarak sunulmuştur.

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Keywords

Picosecond timing, MPGD, Micromegas, Photocathodes, Cherenkov radiators, Timing algorithms, Instruments & instrumentation, Nuclear science & technology, Physics

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