1. A large area 100 channel Picosec Micromegas detector with sub 20 ps time resolution
- Author
-
Utrobicic, Antonija, Angelis, Yannis, Aune, Stephan, Bortfeldt, Jonathan, Brunbauer, Florian, Chatzianagnostou, Evridiki, Dehmelt, Klaus, Desforge, Daniel, Fanourakis, George, Floethner, Karl Jonathan, Gallinaro, Michele, Garcia, Francisco, Garg, Prakhar, Giomataris, Ioannis, Gnanvo, Kondo, Gustavsson, Thomas, Iguaz, Francisco Jose, Janssens, Djunes, Kallitsopoulou, Alexandra, Kovacic, Marinko, Legou, Philippe, Lisowska, Marta, Liu, Jianbei, Lupberger, Michael, Malace, Simona, Maniatis, Ioannis, Meng, Yue, Muller, Hans, Oliveri, Eraldo, Orlandini, Giorgio, Papaevangelou, Thomas, Pomorski, Michal, Ropelewski, Leszek, Sampsonidis, Dimos, Scharenberg, Lucian, Schneider, Thomas, Sohl, Lukas, van Stenis, Miranda, Tsipolitis, Yorgos, Tzamarias, Spyros, Veenhof, Rob, Wang, Xu, White, Sebastian, Zhang, Zhiyong, and Zhou, Yi
- Subjects
Physics - Instrumentation and Detectors - Abstract
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 cm$^2$ suffered from degraded timing resolution due to the non-uniformity of the preamplification gap. A new 100 cm$^2$ 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.
- Published
- 2023
- Full Text
- View/download PDF