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PICOSEC-Micromegas Detector, an innovative solution for Lepton Time Tagging
/ Kallitsopoulou, A. (IRFU, Saclay) ; Aleksan, R. (IRFU, Saclay) ; Angelis, Y. (Aristotle U., Thessaloniki) ; Aune, S. (IRFU, Saclay) ; Bortfeldt, J. (Munich U.) ; Brunbauer, F. (CERN) ; Brunoldi, M. (Pavia U. ; INFN, Pavia) ; Chatzianagnostou, E. (Aristotle U., Thessaloniki) ; Datta, J. (SUNY, Stony Brook) ; Desforge, D. (IRFU, Saclay) et al.
The PICOSEC-Micromegas (PICOSEC-MM) detector is a novel gaseous detector designed for precise timing resolution in experimental measurements. It eliminates time jitter from charged particles in ionization gaps by using extreme UV Cherenkov light emitted in a crystal, detected by a Micromegas photodetector with an appropriate photocathode. [...]
arXiv:2411.02532.-
2024-10-16 - 4 p.
Fulltext: PDF;
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Photocathode characterisation for robust PICOSEC Micromegas precise-timing detectors
/ Lisowska, M. (CERN ; IRFU, Saclay) ; Aleksan, R. (IRFU, Saclay) ; Angelis, Y. (Aristotle U., Thessaloniki) ; Aune, S. (IRFU, Saclay) ; Bortfeldt, J. (Munich U.) ; Brunbauer, F. (CERN) ; Brunoldi, M. (Pavia U. ; INFN, Pavia) ; Chatzianagnostou, E. (Aristotle U., Thessaloniki) ; Datta, J. (SUNY, Stony Brook) ; Dehmelt, K. (Jefferson Lab) et al.
The PICOSEC Micromegas detector is a~precise-timing gaseous detector based on a~Cherenkov radiator coupled with a~semi-transparent photocathode and a~Micromegas amplifying structure, targeting a~time resolution of tens of picoseconds for minimum ionising particles. Initial single-pad prototypes have demonstrated a~time resolution below 25 ps, prompting ongoing developments to adapt the concept for High Energy Physics applications, where sub-nanosecond precision is essential for event separation, improved track reconstruction and particle identification. [...]
arXiv:2407.09953.-
2024-12-10 - 9 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1072 (2025) 170151
Fulltext: 2407.09953 - PDF; 1732afb3515e2b936d222cb357afcde6 - PDF; External link: Fermilab Library Server
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A Novel Diamond-like Carbon based photocathode for PICOSEC Micromegas detectors
/ Wang, X. (USTC, Hefei ; Hefei, CUST) ; Aleksan, R. (IRFU, Saclay) ; Angelis, Y. (Aristotle U., Thessaloniki) ; Bortfeldt, J. (LMU Munich (main)) ; Brunbauer, F. (CERN) ; Brunoldi, M. (Pavia U. ; INFN, Pavia) ; Chatzianagnostou, E. (Aristotle U., Thessaloniki) ; Datta, J. (Stony Brook U.) ; Degmelt, K. (Jefferson Lab) ; Fanourakis, G. (Democritos Nucl. Res. Ctr.) et al.
The PICOSEC Micromegas (MM) detector is a precise timing gaseous detector based on a MM detector operating in a two-stage amplification mode and a Cherenkov radiator. Prototypes equipped with cesium iodide (CsI) photocathodes have shown promising time resolutions as precise as 24 picoseconds (ps) for Minimum Ionizing Particles. [...]
arXiv:2406.08712.-
2024-08-12 - 15 p.
- Published in : JINST 19 (2024) P08010
Fulltext: 806956891d4956950d85abdbaee8cf0d - PDF; 2406.08712 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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Single channel PICOSEC Micromegas detector with improved time resolution
/ Utrobicic, A. (Boskovic Inst., Zagreb) ; Aleksan, R. (IRFU, Saclay) ; Angelis, Y. (Aristotle U., Thessaloniki) ; Bortfeldt, J. (Munich U.) ; Brunbauer, F. (CERN) ; Brunoldi, M. (Pavia U. ; INFN, Pavia) ; Chatzianagnostou, E. (Aristotle U., Thessaloniki) ; Datta, J. (SUNY, Stony Brook) ; Dehmelt, K. (Jefferson Lab) ; Fanourakis, G. (American Coll. of Greece) et al.
This paper presents design guidelines and experimental verification of a single-channel PICOSEC Micromegas (MM) detector with an improved time resolution. The design encompasses the detector board, vessel, auxiliary mechanical parts, and electrical connectivity for high voltage (HV) and signals, focusing on improving stability, reducing noise, and ensuring signal integrity to optimize timing performance. [...]
arXiv:2406.05657; FERMILAB-PUB-24-0499-CMS-V.-
2024-12-16 - 29 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1072 (2025) 170127
Fulltext: 2406.05657 - PDF; 9799b01fc06dbef84710538b6ae3d6d9 - PDF; External link: Fermilab Library Server
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Spatial resolution improvements with finer-pitch GEMs
/ Flöthner, K.J. (CERN ; Bonn U., HISKP) ; Scharenberg, L. (CERN) ; Brask, A. (Aarhus U. (main) ; CERN) ; Brunbauer, F. (CERN) ; Garcia, F. (Helsinki Inst. of Phys.) ; Janssens, D. (CERN) ; Ketzer, B. (Bonn U., HISKP) ; Lisowska, M. (CERN ; U. Paris-Saclay) ; Muller, H. (CERN ; Bonn U.) ; Oliveri, E. (CERN) et al.
Gas Electron Multipliers (GEMs) are used in many particle physics experiments, employing their 'standard' configuration with amplification holes of 140 um pitch in a hexagonal pattern. However, the collection of the charge cloud from the primary ionisation electrons from the drift region of the detector into the GEM holes affects the position information from the initial interacting particle. [...]
arXiv:2406.05836.-
2024-07-24 - 11 p.
- Published in : JINST 19 (2024) P07027
Fulltext: 2406.05836 - PDF; document - PDF;
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Characterisation of resistive MPGDs with 2D readout
/ Scharenberg, L. (CERN) ; Brunbauer, F. (CERN) ; Danielsson, H. (CERN) ; Fang, Z. (CUST, SKLPDE ; Hefei, CUST) ; Flöthner, K.J. (CERN ; Bonn U., HISKP) ; Garcia, F. (Helsinki Inst. of Phys.) ; Janssens, D. (CERN ; Brussels U., IIHE ; Vrije U., Brussels) ; Lisowska, M. (CERN ; U. Paris-Saclay) ; Liu, J. (CUST, SKLPDE ; Hefei, CUST) ; Lyu, Y. (CUST, SKLPDE ; Hefei, CUST) et al.
Micro-Pattern Gaseous Detectors (MPGDs) with resistive anode planes provide intrinsic discharge robustness while maintaining good spatial and time resolutions. Typically read out with 1D strips or pad structures, here the characterisation results of resistive anode plane MPGDs with 2D strip readout are presented. [...]
arXiv:2402.03899.-
2024-05-21 - 13 p.
- Published in : JINST 19 (2024) P05053
Fulltext: document - PDF; 2402.03899 - PDF;
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Integration of CVD graphene in gaseous electron multipliers for high energy physics experiments
/ Orlandini, G (CERN ; Erlangen - Nuremberg U.) ; Brunbauer, F M (CERN) ; Coletti, C (NEST-INFM ; Italian Inst. Tech., Genoa) ; Convertino, D (NEST-INFM) ; Doser, M (CERN) ; Floethner, K J (CERN ; Bonn U., HISKP) ; Janssens, D (CERN ; Vrije U., Brussels) ; Lisowska, M (CERN ; IRFU, Saclay) ; Mishra, N (NEST-INFM ; Italian Inst. Tech., Genoa) ; Oliveri, E (CERN) et al.
To enhance the performance of micro-patterned gaseous detectors (MPGDs) to meet thechallenging requirements of future high energy physics (HEP) experiments, two-dimensional (2D)materials are attractive candidates to address the back flow of positive ions, which affectsdetector performance by distorting electric field lines. In this context, graphene is promisingto work as selective filter for ion back flow suppression, being transparent to electrons while atthe same time blocking ions. [...]
2023 - 8 p.
- Published in : JINST 18 (2023) C06022
Fulltext: PDF;
In : 8th International symposium on Negative Ions, Beams and Sources (NIBS'22), Padua, Italy, 2 - 7 Oct 2022, pp.C06022
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Development of a high-rate scalable readout system for gaseous detectors
/ Scharenberg, L (CERN ; Bonn U.) ; Bortfeldt, J (LMU Munich (main)) ; Brunbauer, F (CERN) ; Christensen, M J (ESS, Lund) ; Desch, K (Bonn U.) ; Flöthner, K (CERN ; Bonn U.) ; Garcia, F (Helsinki Inst. of Phys.) ; Janssens, D (CERN ; Vrije U., Brussels ; Brussels U., IIHE) ; Kaminski, J (Bonn U.) ; Lisowska, M (CERN ; U. Paris-Saclay) et al.
The RD51 collaboration developed the Scalable Readout System (SRS) as part of its R&D; activities on Micro-Pattern Gaseous Detectors. This common multi-purpose readout system allows to read out small R&D; detectors (0.2k channels) up to mid-sized experiments with multiple detectors (2.5k to 5k channels). [...]
2022 - 9 p.
- Published in : JINST 17 (2022) C12014
In : Topical Workshop on Electronics for Particle Physics 2022 (TWEPP 2022), Bergen, Norway, 19 - 23 Sep 2022, pp.C12014
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