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Characterization of the FBK-LGAD devices manufactured at an external foundry for large-volume productions
/ CMS Collaboration
In recent years, the HEP detector community has shown an increasing interest in Low Gain Avalanche Diodes (LGADs) due to their excellent temporal resolution, good radiation resistance, and low material budget. An example of this is the upcoming CMS Endcap Timing Layer (ETL), a subdetector which will feature four disks (14 m$^{2}$) covered with these devices.In this context, Fondazione Bruno Kessler (FBK), one of the qualified producers of the ETL LGAD sensors, has recently initiated a technology transfer of the FBK-LGAD technology to an external CMOS foundry (LFoundry) in order to enable a larger and cost-effective production.The first prototype run from LFoundry was produced in May 2024. [...]
2025 - 9 p.
- Published in : JINST 20 (2025) C07039
Fulltext: PDF;
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Irradiation tests of the OBDTv1 board at CHARM
/ CMS DT Collaboration
The CMS Muon Drift Tube (DT) chambers require an upgrade oftheir on-detector electronics for operation in the High LuminosityLHC (HL-LHC) due to increased radiation, occupancy and triggerrates. The new On-Detector Board for Drift Tubes (OBDT) digitizesdrift signals with a resolution of 0.8 ns and transmits them viahigh-speed optical links into the counting room, where the fulldetector information will be available to perform the trigger andevent building logic. [...]
2025 - 15 p.
- Published in : JINST 20 (2025) T05009
Fulltext: PDF;
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Towards sustainable RPC detectors: Exploring CO2-based gas mixtures for CERN LHC experiments
/ Rigoletti, Gianluca (CERN) ; Guida, Roberto (CERN) ; Mandelli, Beatrice (CERN) ; Verzeroli, Mattia (IP2I, Lyon) ; Juks, Stefania A (U. Paris-Saclay)
Resistive Plate Chamber detectors at the CERN LHC experiments use a Freon-based gas mixture containing R-134a and SF6, high global warming potential greenhouse gases. To minimize greenhouse gas emissions and expenses and optimize RPC performance, it is crucial to research new environmentally friendly gas mixtures. [...]
2025 - 5 p.
Fulltext: PDF;
In : 3rd International Conference on Detector Stability and Aging Phenomena in Gaseous Detectors, CERN, Geneva, Switzerland, 6 - 10 Nov 2023, pp.170331
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4.
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Rad-hard readout system for Timepix3 Hybrid Pixel Detectors
/ Cabrera, Gabriela (CERN) ; Jensen, Steen (CERN) ; Joul, Juri (CERN) ; McLean, Mark (CERN) ; Sandberg, Hampus (CERN) ; Storey, James (CERN)
The Beam Gas Ionisation (BGI) profile monitor, located in the Proton Synchrotron (PS) andSuper Proton Synchrotron (SPS) at CERN, requires a radiation-tolerant readout system to transferdata from the challenging accelerator surroundings to the back-end for processing. The systemneeds to control and acquire data from four Timepix3 Hybrid Pixel Detectors (HPDs) locateddirectly inside the beam pipe, a highly radioactive environment. [...]
2025 - 7 p.
- Published in : JINST
Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2024, Glasgow, United Kingdom, 30 Sep - 4 Oct 2024, pp.C02009
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5.
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CWDM-based radiation-tolerant high-speed optical links
/ Cristiano, A (CERN) ; Sigaud, C (CERN) ; Scarcella, C (CERN) ; Quintana, I (CERN) ; Olanterä, L (CERN) ; Alfiero, D (CERN ; Birmingham U.) ; Muthuganesan, H (CERN) ; Soós, C (CERN) ; Detraz, S (CERN) ; Troska, J (CERN)
The consolidation of the Large Hadron Collider (LHC) Beam Instrumentation requires the digitisation of the analogue signals from the detectors within the radiation areas. Subsequently, the digital data are transmitted via the existing fibre plant to the back-end area for processing. [...]
2025 - 7 p.
- Published in : JINST
Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2024, Glasgow, United Kingdom, 30 Sep - 4 Oct 2024, pp.C03002
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Fab-to-fab and run-to-run variability in 130 nm and 65 nm CMOS technologies exposed to ultra-high TID
/ Termo, G (CERN ; Ecole Polytechnique, Lausanne) ; Borghello, G (CERN) ; Faccio, F (CERN) ; Michelis, S (CERN) ; Koukab, A (Ecole Polytechnique, Lausanne) ; Sallese, J M (Ecole Polytechnique, Lausanne)
The discovery of a large fab-to-fab variability in the TID response of the CMOS technologies used in the design of ASICs for the particle detectors of the HL-LHC triggered a monitoring effort to verify the consistency of the CMOS production process over time. As of 2014, 22 chips from 3 different fabs in 130 nm CMOS technology and 11 chips from 2 different fabs in 65 nm CMOS technology have been irradiated to ultra-high doses, ranging from 100 Mrad(SiO$_{2}$) to 1 Grad(SiO$_{2}$). [...]
2023 - 9 p.
- Published in : JINST
In : Topical Workshop on Electronics for Particle Physics 2022 (TWEPP 2022), Bergen, Norway, 19 - 23 Sep 2022, pp.C01061
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7.
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A study of radiation effects on LuAG:Ce(Pr) co-activated with Ca
/ Petrosyan, A G (Ashtarak, IPR) ; Ovanesyan, K L (Ashtarak, IPR) ; Derdzyan, M V (Ashtarak, IPR) ; Ghambaryan, I (Ashtarak, IPR) ; Patton, G (Lyon, LPCML) ; Moretti, F (Lyon, LPCML) ; Auffray, E (CERN) ; Lecoq, P (CERN) ; Lucchini, M (CERN) ; Pauwels, K (CERN) et al.
Single crystals of LuAG:Ce co-doped with Ca2+ were grown by the vertical Bridgman method and studied for optical properties, γ-irradiation induced absorption, scintillation light yield and decay. It is shown that addition of Ca2+ may efficiently limit the radiation induced absorption associated with presence of trace amounts of Yb. [...]
2015 - 6 p.
- Published in : J. Cryst. Growth 430 (2015) 46-51
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Radiation test of commercial of the shelf (COTS) optical transceivers in the frame of the beam position monitor (BPM) consolidation project for the Large Hadron Collider (LHC)
/ Marin, M Barros (CERN) ; Boccardi, A (CERN) ; Ozdogan, S Can (CERN) ; Danzeca, S (CERN) ; Ferraro, R (CERN) ; Scialdone, A (CERN)
The consolidation of the Large Hadron Collider (LHC) beam position monitor (BPM) requires the deployment of about 5000 single-mode radiation-tolerant optical transmitters, working at 10 Gbps during 20 years of operation. While the use of the custom devices being designed at CERN remains the baseline for the project, 8 commercial of the shelf (COTS) optical transceivers have been evaluated as an alternative. [...]
2024 - 9 p.
- Published in : JINST 19 (2024) C03040
Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023, pp.C03040
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