Towards robust PICOSEC Micromegas precise timing detectors

Lisowska, M.; Angelis, Y.; Aune, S.; Bortfeldt, J.; Brunbauer, F.; Chatzianagnostou, E.; Dehmelt, K.; Desforge, D.; Fanourakis, G.; Floethner, K.J.; Gallinaro, M.; Garcia, F.; Garg, P.; Giomataris, I.; Gnanvo, K.; Gustavsson, T.; Iguaz, F.J.; Janssens, D.; Kallitsopoulou, A.; Kovacic, M.; Legou, P.; Liu, J.; Lupberger, M.; Malace, S.; Maniatis, I.; Meng, Y.; Muller, H.; Oliveri, E.; Orlandini, G.; Papaevangelou, T.; Pomorski, M.; Ropelewski, L.; Sampsonidis, D.; Scharenberg, L.; Schneider, T.; Scorsone, E.; Sohl, L.; Van Stenis, M.; Tsipolitis, Y.; Tzamarias, S.E.; Utrobicic, A.; Veenhof, R.; Wang, X.; White, S.; Zhang, Z.; Zhou, Y.

doi:10.1088/1748-0221/18/07/c07018

Towards robust PICOSEC Micromegas precise timing detectors

Copy For Citation

Lisowska M., Angelis Y., Aune S., Bortfeldt J., Brunbauer F., Chatzianagnostou E., ...More

Journal of Instrumentation, vol.18, no.7, 2023 (SCI-Expanded)

Publication Type: Article / Abstract
Volume: 18 Issue: 7
Publication Date: 2023
Doi Number: 10.1088/1748-0221/18/07/c07018
Journal Name: Journal of Instrumentation
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Index Islamicus, INSPEC
Keywords: Cherenkov detectors, Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc), Timing detectors
Bursa Uludag University Affiliated: No

Abstract

The PICOSEC Micromegas (MM) detector is a precise timing gaseous detector consisting of a Cherenkov radiator combined with a photocathode and a MM amplifying structure. A 100-channel PICOSEC MM prototype with 10 × 10 cm2 active area equipped with a Cesium Iodide (CsI) photocathode demonstrated a time resolution below σ = 18 ps. The objective of this work is to improve the PICOSEC MM detector robustness aspects, i.e. integration of resistive MM and carbon-based photocathodes, while maintaining good time resolution. The PICOSEC MM prototypes have been tested in laboratory conditions and successfully characterised with 150 GeV/c muon beams at the CERN SPS H4 beam line. The excellent timing performance below σ = 20 ps for an individual pad obtained with the 10 × 10 cm2 area resistive PICOSEC MM of 20 Mω/□ showed no significant time resolution degradation as a result of adding a resistive layer. A single-pad prototype equipped with a 12 nm thick Boron Carbide (B4C) photocathode presented a time resolution below σ = 35 ps, opening up new possibilities for detectors with robust photocathodes. The results made the concept more suitable for the experiments in need of robust detectors with good time resolution.