Bibliographic Details
| Title: |
Design and Performance of a 96-channel Resistive PICOSEC Micromegas Detector for ENUBET |
| Authors: |
Kallitsopoulou, A., Aune, S., Angelis, Y., Aleksan, R., Bonenfant, A., Bortfeldt, J., Brunbauer, F., Brunoldi, M., Datta, J., Desforge, D., Fanourakis, G., Fiorina, D., Floethner, K. J., Gallinaro, M., Garcia, F., Giomataris, I., Gnanvo, K., Iguaz, F. J., Janssens, D., Jeanneau, F., Kebbiri, M., Kovacic, M., Kross, B., Legou, P., Lisowska, M., Liu, J., Loiseau, C., Lupberger, M., Maniatis, I., McKisson, J., Moreno, B., Meng, Y., Muller, H., Oliveri, E., Orlandini, G., Pandey, A., Papaevangelou, T., Pomorski, M., Ribas, E. F., Ropelewski, L., Sampsonidis, D., Scharenberg, L., Schneider, T., Scorsone, E., Sohl, L., van Stenis, M., Tsipolitis, Y., Tzamarias, S. E., Utrobicic, A., Vai, I., Veenhof, R., Vitulo, P., Wang, X., White, S., Xi, W., Zhang, Z., Zhou, Y. |
| Publication Year: |
2025 |
| Subject Terms: |
Instrumentation and Detectors |
| Description: |
The PICOSEC-Micromegas (PICOSEC-MM) detector is a fast gaseous detector that achieves picosecond-level timing by coupling a Cherenkov radiator, typically an MgF2 crystal, to a Micromegas-based photodetector with a photocathode. This configuration allows the fast photoelectron-induced signal to suppress the intrinsic time jitter of gaseous detectors, enabling sub-20 ps timing precision while preserving the robustness and scalability of micro-pattern gaseous detector technologies. The 96-pad PICOSEC-MM detector is a large-area demonstrator optimized for precision timing in high-energy physics, building on research and development insights from earlier 7-pad resistive prototypes to validate scalability, uniformity, and robustness for the ENUBET project. It employs a 2.5 nm diamond-like carbon photocathode and a Micromegas board with a surface resistivity of 10 megaohms per square, and was characterized using 150 GeV/c muons at the CERN SPS beamline, with one-third of the active area instrumented per run. A dedicated alignment procedure for multi-pad PICOSEC-MM systems was used to reconstruct pad centers and merge measurements across regions, yielding a timing resolution of 43 ps and uniform signal arrival time distributions over the tested area. Mechanical flatness was identified as a key factor, with planarity tolerances within 10 micrometers required to maintain good timing resolution, and the successful operation of the 96-pad demonstrator confirms the scalability of the PICOSEC-MM concept toward robust, high-granularity, picosecond-level gaseous timing detectors for monitored neutrino beam experiments such as ENUBET. |
| Document Type: |
Working Paper |
| DOI: |
10.48550/arXiv.2512.05589 |
| Access URL: |
http://arxiv.org/abs/2512.05589 |
| Accession Number: |
edsarx.2512.05589 |
| Database: |
arXiv |