A large area 100 channel Picosec Micromegas detector with sub 20 ps time resolution - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Conference Papers Year : 2022

A large area 100 channel Picosec Micromegas detector with sub 20 ps time resolution

F. Brunbauer
M. Lisowska
M. Lupberger
I. Maniatis
H. Muller
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E. Oliveri
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G Orlandini
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L. Ropelewski
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L. Scharenberg
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T. Schneider
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M. van Stenis
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R. Veenhof
S. White
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The PICOSEC Micromegas precise timing detector is based on a Cherenkov radiator coupled to a semi-transparent photocathode and a Micromegas amplification structure. The first proof of concept single-channel small area prototype was able to achieve time resolution below 25 ps. One of the crucial aspects in the development of the precise timing gaseous detectors applicable in high-energy physics experiments is a modular design that enables large area coverage. The first 19-channel multi-pad prototype with an active area of approximately 10 cm2 suffered from degraded timing resolution due to the non-uniformity of the preamplification gap. A new 100 cm2 detector module with 100 channels based on a rigid hybrid ceramic/FR4 Micromegas board for improved drift gap uniformity was developed. Initial measurements with 80 GeV/c muons showed improvements in timing response over measured pads and a time resolution below 25 ps. More recent measurements with a new thinner drift gap detector module and newly developed RF pulse amplifiers show that the resolution can be enhanced to a level of 17 ps. This work will present the development of the detector from structural simulations, design, and beam test commissioning with a focus on the timing performance of a thinner drift gap detector module in combination with new electronics using an automated timing scan method.
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cea-04077382 , version 1 (21-04-2023)


  • HAL Id : cea-04077382 , version 1


A. Utrobicic, Y Angelis, J. Bortfeldt, F. Brunbauer, Evaggelia Chatzianagnostou, et al.. A large area 100 channel Picosec Micromegas detector with sub 20 ps time resolution. MPGD 2022 - 7th International Conference on Micro Pattern Gaseous Detectors, Weizmann Institute of Science; RD51 at CERN, Dec 2022, Rehovot, Israel. ⟨cea-04077382⟩
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