A large area 100-channel PICOSEC Micromegas detector with time resolution at the 20 ps level

Conference · 12 July 2023 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/18/07/c07012· OSTI ID:2203085

Utrobicic, A. ^[1]; Angelis, Y. ^[2]; Bortfeldt, J. ^[3]; Brunbauer, F. ^[4]; Chatzianagnostou, E. ^[2]; Dehmelt, K. ^[5]; Fanourakis, G. ^[6]; Floethner, K. J. ^[4]; Gallinaro, M. ^[7]; Garcia, F. ^[8]; Garg, P. ^[5]; Giomataris, I. ^[9]; Gnanvo, K. ^[10]; Gustavsson, T. ^[11]; Iguaz, F. J. ^[11]; Janssens, D. ^[12]; Kallitsopoulou, A. ^[9]; Kovacic, M. ^[13]; Legou, P. ^[9]; Lisowska, M. ^[4] ; Liu, J. ^[14]; Lupberger, M. ^[15]; Maniatis, I. ^[4]; Meng, Y. ^[16]; Muller, H. ^[4]; Oliveri, E. ^[4]; Orlandini, G. ^[4]; Papaevangelou, T. ^[9]; Pomorski, M. ^[17]; Ropelewski, L. ^[4]; Sampsonidis, D. ^[2]; Scharenberg, L. ^[4]; Schneider, T. ^[4]; Sohl, L. ^[11]; van Stenis, M. ^[4]; Tsipolitis, Y. ^[18]; Tzamarias, S. E. ^[19]; Veenhof, R. ^[4]; Wang, X. ^[14]; White, S. ^[4]; Zhang, Z. ^[14]; Zhou, Y. ^[14]

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1. Ruđer Bošković Institute, Zagreb, Croatia
2. Aristotle University of Thessaloniki, Greece
3. Ludwig Maximilian University of Munich, Germany
4. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
5. Stony Brook Univ., NY (United States)
6. Institute of Nuclear and Particle Physics, Greece
7. Laboratório de Instrumentacão e Física Experimental de Partículas, Lisbon, Portugal
8. University of Helsinki, Finland
9. Université Paris-Saclay, Orsay (France)
10. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
11. Univ. Paris-Saclay, Gif-sur-Yvette (France)
12. Ruđer Bošković Institute, Croatia
13. University of Zagreb, Croatia
14. University of Science and Technology Beijing (China)
15. University of Bonn, Germany
16. University of Science and Technology
17. Commissariat a l'Energie Atomique (CEA), Saclay (France)
18. National Technical University of Athens, Athens, Greece
19. Aristotle University of Thessaloniki, Greece

Abstract The PICOSEC Micromegas precise timing detector is based on a Cherenkov radiator coupled to a photocathode operating in a semi-transparent mode and a Micromegas amplification structure. The first proof of concept single-channel prototype was able to achieve a time resolution below 25 ps. One of the crucial aspects in the development of 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 thickness. 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 the measured pads and a time resolution below 25 ps. More recent measurements with a thinner drift gap detector module and newly developed RF pulse amplifiers show that the pad centre resolution can be enhanced to the 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.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 2203085
• Report Number(s): JLAB-PHY-23-3799; arXiv:2304.00056; DOE/OR/23177-6111
• Journal Information: Journal of Instrumentation, Vol. 18, Issue 07; Conference: 7th International Conference on Micro Pattern Gaseous Detectors, Rehovot, Israel, 11–16 December 2022; ISSN 1748-0221
• Country of Publication: United States
• Language: English