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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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Induced signals in particle detectors with resistive elements: Numerically modeling novel structures (VCI 2022)
/ Janssens, D (CERN ; Brussels U., IIHE ; Vrije U., Brussels) ; Brunbauer, F (CERN) ; D'Hondt, J (Brussels U., IIHE ; Vrije U., Brussels) ; Floethner, K J (CERN ; Bonn U., HISKP) ; Lisowska, M (CERN ; U. Paris-Saclay) ; Muller, H (CERN ; Bonn U.) ; Oliveri, E (CERN) ; Orlandini, G (CERN ; U. Erlangen-Nuremberg (main)) ; Riegler, W (CERN) ; Ropelewski, L (CERN) et al.
For detectors with resistive elements, the time dependence of the signals is not solely given by the movement of the charges in the drift medium but also by the time-dependent reaction of the resistive materials. In this report, we present a numerical way to capture this contribution by using the extended form of the Ramo–Shockley theorem for conductive media. [...]
2022 - 4 p.
In : Vienna Conference on Instrumentation, Online, Online, 21 - 25 Feb 2022, pp.167227
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The XYU-GEM: Ambiguity-free coordinate readout of the Gas Electron Multiplier
/ Flöthner, K J (CERN ; Bonn U., HISKP) ; Janssens, D (CERN ; Brussels U., IIHE ; Vrije U., Brussels) ; Brunbauer, F (CERN) ; Ferry, S (CERN) ; Ketzer, B (Bonn U., HISKP) ; Lisowska, M (CERN ; IRFU, Saclay) ; Muller, H (CERN ; Bonn U.) ; de Oliveira, R (CERN) ; Oliveri, E (CERN) ; Orlandini, G (CERN ; Erlangen - Nuremberg U.) et al.
We describe the development of a position-sensitive Gas Electron Multiplier detector prototype, providing for each ionizing event three coordinates: the cartesian X and Y, and U at 45°. Simultaneous recording of the three projections permits ambiguity-free reconstruction of multiple tracks, and aims at operation in very high intensity radiation fields..
2023 - 6 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1052 (2023) 168257
Fulltext: PDF;
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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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Sub-25 ps timing measurements with $10 \times 10$ cm$^2$ PICOSEC Micromegas detectors
/ Lisowska, M (CERN ; U. Paris-Saclay) ; Bortfeldt, J (Munich U.) ; Brunbauer, F (CERN) ; Fanourakis, G (Democritos Nucl. Res. Ctr.) ; Floethner, K J (CERN ; Helmholtz Inst., Mainz) ; Gallinaro, M (LIP, Lisbon) ; Garcia, F (Helsinki Inst. of Phys.) ; Giomataris, I (IRFU, Saclay) ; Gustavsson, T (LIDYL, Saclay) ; Iguaz, F J (IRFU, Saclay) et al.
The PICOSEC Micromegas detector is a precise timing gaseous detector based on a Cherenkov radiator coupled to a semi-transparent photocathode and a Micromegas amplifying structure. First single-pad prototypes demonstrated a time resolution below 𝜎 = 25 ps, however, to make the concept appropriate to physics applications, several developments are required. [...]
2023 - 7 p.
Fulltext: PDF;
In : 9th Conference on New Developments in Photodetection, Troyes, France, 4 - 8 Jul 2022, pp.167687
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Dynamical localization simulated on actual quantum hardware
/ Pizzamiglio, Andrea (Insubria U., Como) ; Chang, Su Yeon (Ecole Polytechnique, Lausanne ; CERN) ; Bondani, Maria (Insubria U., Como) ; Montangero, Simone (Padua U. ; INFN, Padua) ; Gerace, Dario (Pavia U.) ; Benenti, Giuliano (Insubria U., Como ; INFN, Milan ; NEST-INFM)
Quantum computers are invaluable tools to explore the properties of complex quantum systems. We show that dynamical localization of the quantum sawtooth map, a highly sensitive quantum coherent phenomenon, can be simulated on actual, small-scale quantum processors. [...]
arXiv:2105.10813.-
2021 - 10 p.
- Published in : Entropy 23 (2021) 654
Fulltext: 10.3390_e23060654 - PDF; 2105.10813 - PDF;
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Studying signals in particle detectors with resistive elements such as the 2D resistive strip bulk MicroMegas
/ Janssens, Djunes (CERN ; Brussels U., IIHE ; Vrije U., Brussels) ; Brunbauer, Florian (CERN) ; Flöthner, Karl Jonathan (CERN ; Helmholtz Inst., Mainz) ; Lisowska, Marta (CERN ; U. Paris-Saclay) ; Muller, Hans (CERN ; Bonn U.) ; Oliveri, Eraldo (CERN) ; Orlandini, Giorgio (CERN ; Erlangen - Nuremberg U.) ; Riegler, Werner (CERN) ; Ropelewski, Leszek (CERN) ; Schindler, Heinrich (CERN) et al.
As demonstrated by the ATLAS New Small Wheel community with their MicroMegas (MM) design, resistive electrodes are now used in different detector types within the Micro Pattern Gaseous Detector family to improve their robustness or performance. The extended form of the Ramo-Shockley theorem for conductive media has been applied to a 1 M$\Omega$/$\Box$ 2D resistive strip bulk MM to calculate the signal's spreading over neighbouring channels using an 80 GeV/c muon track. [...]
arXiv:2304.01883.-
2023-08-23 - 7 p.
- Published in : JINST
Fulltext: document - PDF; 2304.01883 - PDF;
In : 7th International Conference on Micro Pattern Gaseous Detectors 2022 (MPGD 2022), Rehovot, Israel, 11 - 16 Dec 2022, pp.C08010
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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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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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A large area 100-channel PICOSEC Micromegas detector with time resolution at the 20 ps level
/ Utrobicic, A. (Boskovic Inst., Zagreb) ; Angelis, Y. (Aristotle U., Thessaloniki) ; Aune, Stephan ; Bortfeldt, J. (Munich U.) ; Brunbauer, F. (CERN) ; Chatzianagnostou, E. (Aristotle U., Thessaloniki) ; Dehmelt, K. (SUNY, Stony Brook) ; Desforge, Daniel ; Fanourakis, G. (American Coll. of Greece) ; Floethner, K.J. (CERN ; Bonn U., HISKP) et al.
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. [...]
arXiv:2304.00056; FERMILAB-PUB-23-159-V; JLAB-PHY-23-3799.-
2023-07-12 - 10 p.
- Published in : JINST
Fulltext: FERMILAB-PUB-23-159-V - PDF; e11a25382b5d2a8c79973558bc560c53 - PDF; 2304.00056 - PDF; External links: JLab Document Server; Fermilab Library Server
In : 7th International Conference on Micro Pattern Gaseous Detectors 2022 (MPGD 2022), Rehovot, Israel, 11 - 16 Dec 2022
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