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Sub-25 ps timing measurements with 10 × 10 cm 2 PICOSEC Micromegas detectors

M. Lisowska 1, 2 J. Bortfeldt 3 F. Brunbauer 1 G. Fanourakis 4 K.J. Floethner 5, 1 M. Gallinaro 6 F. Garcia 7 I. Giomataris 8 T. Gustavsson 9, 10 F.J. Iguaz 8 D. Janssens 1 A. Kallitsopoulou 8 M. Kovacic 11 P. Legou 8 J. Liu 12 M. Lupberger 5 I. Maniatis 13 Y. Meng 12 H. Muller 5 E. Oliveri 1 G. Orlandini 14 T. Papaevangelou 8 Michal Pomorski 15 L. Ropelewski 1 D. Sampsonidis 13 L. Scharenberg 5 T. Schneider 1 L. Sohl 8 M. van Stenis 1 Y. Tsipolitis 16 S.E. Tzamarias 13 A. Utrobicic 1 R. Veenhof 1 X. Wang 12 S. White 17 Z. Zhang 12 Y. Zhou 12 
Abstract : The PICOSEC Micromegas detector is a precise timing gaseous detector based on a Cherenkov radiator coupled to a semi-transparent photocathode and a Micromegas amplifying structure. First single-pad prototypes demonstrated a time resolution below  = 25 ps, however, to make the concept appropriate to physics applications, several developments are required. The objective of this work was to achieve an equivalent time resolution for a 10 × 10 cm area PICOSEC Micromegas detector. The prototype was designed, produced and tested in the laboratory and successfully operated with a 80 GeV/c muon beam. Preliminary results for this device equipped with a CsI photocathode demonstrated a time resolution below  = 25 ps for all measured pads. The time resolution was reduced to be below  = 18 ps by decreasing the drift gap to 180 m and using dedicated RF amplifier cards as new electronics. The excellent timing performance of the single-channel proof of concept was not only transferred to the 100-channel prototype, but even improved, making the PICOSEC Micromegas detector more suitable for large-area experiments in need of detectors with high time resolutions.
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Submitted on : Tuesday, November 8, 2022 - 9:04:39 PM
Last modification on : Thursday, November 10, 2022 - 3:31:23 AM


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M. Lisowska, J. Bortfeldt, F. Brunbauer, G. Fanourakis, K.J. Floethner, et al.. Sub-25 ps timing measurements with 10 × 10 cm 2 PICOSEC Micromegas detectors. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2022, pp.167687. ⟨10.1016/j.nima.2022.167687⟩. ⟨cea-03844611⟩



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