TWEPP 2025 Topical Workshop on Electronics for Particle Physics

Session

ASIC

6 Oct 2025, 15:00

Rethymno, Crete, Greece

Conveners

ASIC

• Marcus Julian French (Science and Technology Facilities Council STFC (GB))
• Angelo Rivetti (Universita e INFN Torino (IT))
• Angelo Rivetti (INFN - National Institute for Nuclear Physics)

ASIC

• David Gascon (University of Barcelona (ES))
• Marcus Julian French (Science and Technology Facilities Council STFC (GB))

ASIC

• Marcus Julian French (Science and Technology Facilities Council STFC (GB))
• David Gascon (University of Barcelona (ES))

ASIC

• Marcus Julian French (Science and Technology Facilities Council STFC (GB))
• David Gascon (University of Barcelona (ES))

ASIC

• David Gascon (University of Barcelona (ES))
• Angelo Rivetti (Universita e INFN Torino (IT))
• Angelo Rivetti (INFN - National Institute for Nuclear Physics)

ASIC

• Angelo Rivetti (Universita e INFN Torino (IT))
• Marcus Julian French (Science and Technology Facilities Council STFC (GB))
• Angelo Rivetti (INFN - National Institute for Nuclear Physics)

ASIC

• Angelo Rivetti (Universita e INFN Torino (IT))
• Angelo Rivetti (INFN - National Institute for Nuclear Physics)
• David Gascon (University of Barcelona (ES))

55. Performance and lessons learnt from System-Level testing of AltirocA, the Pre-Production ASIC for the ATLAS High Granularity Timing Detector

Nathalie Seguin-Moreau (OMEGA - Ecole Polytechnique - CNRS/IN2P3)

06/10/2025, 15:00

ASIC

Oral

The High Granularity Timing Detector (HGTD) for the ATLAS experiment, within the HL-LHC upgrade, uses Low Gain Avalanche Diode (LGAD) sensors for high-precision timing measurements.
AltirocA is the pre-production 225-channel readout ASIC, providing both luminosity and time-of-arrival measurements. The full system targets a resolution of 30 ps per hit initially and 70 ps after full...

62. The LiTE-DTU ASIC for the CMS ECAL upgrade: performance and experiences to treasure from first prototype to mass production, test and integration.

Stefano Argiro (Universita di Torino and INFN (IT))

06/10/2025, 15:20

ASIC

Oral

The LiTE-DTU is an ASIC designed to digitize and transmit scintillation signals from the CMS Electromagnetic Calorimeter (ECAL) at HL-LHC. The chip was produced in TSMC 65 nm technology. The development process of the chip was not without hurdles, going through three prototype cycles and two engineering runs. Functionality and performance has been assessed in four test-beam campaigns. 96k...

129. Design to Production of HGCROC3 and H2GCROC3: Radiation-Hard Front-End ASICs for the CMS HGCAL

Mr Damien Thienpont (OMEGA - Ecole Polytechnique - CNRS/IN2P3)

06/10/2025, 15:40

ASIC

Oral

The CMS High Granularity Calorimeter (HGCAL), developed for the HL-LHC, uses custom ASICs—HGCROC3 and H2GCROC3—to read out silicon sensors and SiPM-on-tile modules. These chips provide precise charge and timing measurements, digital processing for triggering, and are designed to operate in harsh radiation conditions. Version 3 of the chips implements all final features, with sub-versions A–E...

7. Development of the CoRDIA detector: first performance estimations

alessandro marras (Deutsches Elektronen-Synchrotron)

06/10/2025, 16:30

ASIC

Oral

CoRDIA is an X-ray imager being developed, for Photon Science experiments at 4th generation Synchrotron Rings. Its goal is to be capable of continuous operation at 150k frame/s. Its Analog Front-End consists in a battery of adaptive-gain amplifiers and Analog-to-Digital converters, arranged in a pipelined, modular structure compatible with a compact pixel pitch (110um). A test structure has...

79. Challenges and strategies in verification of FastRICH ASIC for the LHCb RICH detector

Matteo Lupi (CERN)

06/10/2025, 16:50

ASIC

Oral

The FastRICH ASIC provides high-precision, triggerless readout for Upgrade-Ib of the LHCb RICH detectors. Demands of continuous data acquisition and varying hit rates across the detector impose unique challenges on the ASIC's design and verification. This work presents the verification strategy for FastRICH, focusing on functional correctness, timing performance, and operational robustness....

93. Design and Evaluation of TriglaV: A Prototype SoC ASIC for Particle Physics Applications realized with the SOCRATES Platform

Anvesh Nookala (TU Wien)

06/10/2025, 17:10

ASIC

Oral

The TriglaV ASIC is a RISC-V-based SoC designed to address the requirements of future particle physics experiments. Fabricated in a TID-robust 28nm CMOS technology, it integrates fault-tolerance against single-event effects using TMR and ECC techniques. The architecture features a triplicated core, ECC-hardened memory blocks, hardened peripherals and interconnects. TriglaV was built via the...

149. Tracking performance of the 200 μm thick ARCADIA Fully Depleted MAPS

Caterina Pantouvakis (Universita e INFN, Padova (IT))

07/10/2025, 09:00

ASIC

Oral

The ARCADIA Main Demonstrator 3 (MD3), developed by the ARCADIA INFN collaboration, is a fully Depleted Monolithic Active Pixel Sensor in the LFoundry 110nm CIS technology. It features a custom backside process that allows for the full depletion of the high-resistivity substrate.

The first test beam on the MD3 was performed at the Fermilab Test Beam Facility in July 2024 with a 120 GeV...

191. Design and Characterization of the Monolithic ASIC for the Ultra-High-Resolution 100µPET Scanner

Carlo Alberto Fenoglio

07/10/2025, 09:20

ASIC

Oral

This work presents the design challenges and characterization results of the novel 100µPET detector ASIC. The 100µPET project proposes an innovative scanner for small animals made of a stack of high-granularity, thin, full-reticle MAPS (30.2 x 22.8 mm²), and promises unprecedented volumetric resolution of 0.022 mm³. The chip features ~25k hexagonal pixels with 93 µm side in 130 nm SiGe...

44. Yield and performance validation of the MOSS, the first stitched MAPS prototype for ALICE ITS3

Marius Wilm Menzel (Heidelberg University (DE))

07/10/2025, 09:40

ASIC

Oral

The ALICE Inner Tracking System upgrade (ITS3) will employ stitched, wafer-scale Monolithic Active Pixel Sensors (MAPS) for the first time in a high-energy physics detector. The first stitched prototype, the Monolithic Stitched Sensor (MOSS), underwent testing that confirmed yield compliance with ITS3 requirements. Linearity between time-over-threshold and deposited energy was validated from...

117. ALICE ITS3 MOnolithic Stitched sensor with Timing (MOST): design overview and measurements highlights

Szymon Bugiel (CERN)

07/10/2025, 11:20

ASIC

Oral

The MOST (Monolithic Stitched Sensor with Timing) is a 25.9\,cm-long wafer-scale pixel sensor prototype that bridges generic R\&D for future High Energy Physics (HEP) detectors with the developments aimed for the ALICE Inner Tracking System (ITS3).
Its main purpose is to investigate the yield of high-density pixel architectures, assess the timing capabilities of asynchronous readout,...

169. Development of CMOS LGAD sensors for the ALICE 3 Time of Flight detector

Mr Umberto Follo (Politecnico e INFN Torino (IT))

07/10/2025, 11:40

ASIC

Oral

The ALICE 3 Time of Flight detector requires a time resolution below 20 ps to allow for electron and charged hadron identification from 15 MeV/$c$ (forward e/$\pi$ separation) to 4 GeV/$c$ (p/K separation).
The expected event rate, of about 280 kHz/cm$^2$, makes monolithic CMOS sensors very attractive.
However, their time resolution is still far from the experiment needs.
A solution is to...

189. 3D-integrated sensors for particle physics detectors

Davide Braga (FERMILAB)

07/10/2025, 12:00

ASIC

Oral

The goal of our project is to develop technology that enables large-scale particle detectors with 3D-integrated ASIC designs to achieve 10 μm position and 10 ps precision timing resolutions. The sensors used in this application are based on Low-gain avalanche diodes (LGADs), developed in a standard foundry CMOS process. We also developed a readout ASICs to match these sensors in the TSMC 28 nm...

197. A pixel readout chip prototype in 28 nm CMOS for time resolution study

Mohsine Menouni (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)

07/10/2025, 15:20

ASIC

Oral

Dephy is a research and development project supported by the IN2P3 institute, aiming to investigate the technologies required for the development of small-pixel detectors for trackers in future particle accelerators. Among its objectives, the project focuses on designing pixel readout circuits with high timing resolution, capable of operating in extreme radiation environments. For...

187. 28 nm MOS Transistor SPICE BSIM Model for Simulating Electrical Effects of 1-Grad Total Ionizing Dose based on Gate Oxide Capacitance

Luca Gelmi (INFN section Milano-Bicocca and University of Cagliari)

07/10/2025, 15:40

ASIC

Oral

There are no existing SPICE models that account the effects of radiation doses exceeding 1 GRad in global transistor-level simulations for analog design in 28 nm CMOS technology within Electronic Design Automation environments. We present RAD-BSIM, the first SPICE model based on Berkeley Short-channel IGFET Model (BSIM) leveraging gate-oxide capacitance variations to enable robust circuit...

202. A 32-Channel Cryo-CMOS Readout ASIC for SNSPD Arrays with Sub-10ps Timing

Davide Braga (FERMILAB)

07/10/2025, 16:00

ASIC

Oral

Superconducting nanowire single-photon detectors (SNSPDs) are promising candidates for novel particle detectors offering picosecond timing resolution, but are difficult to scale to large arrays. We present a 32-channel cryo-CMOS ASIC, fabricated in a 22nm FDSOI process, designed for tight integration with SNSPDs and operation at 4K. The ASIC targets 8.0ps RMS timing accuracy across 32 channels...

174. A novel scalable sub-picosecond TDC architecture based on free running oscillator

Luca Iodice (Universite de Geneve (CH))

07/10/2025, 17:40

ASIC

Oral

This work presents the results of proof-of-concept ASIC implementing a novel TDC based on Time-to-Amplitude Converter (TAC) architecture demonstrating a best-case precision of 0.83 ps in a compact area (~0.021 mm²) and with low power (~2.6 mW per channel) making it suitable for high-density integration, typical of HEP applications.
It performs a time interval measurement between events by...

98. SPIDER ASIC for LHCb ECAL Upgrade II (PicoCal)

Baptiste Joly (LPCA Clermont)

07/10/2025, 18:00

ASIC

Oral

We present the design and first test results for SPIDER_v0, the first ASIC prototype in CMOS TSMC 65nm designed for the time measurement path of LHCb Electromagnetic Calorimeter after LS4 Upgrade. The main requirements are a time resolution of 15ps, and an occupancy up to 30% (12 Mevent/s).
SPIDER_v0 is a 2-channel waveform digitizer allowing time reconstruction by digital algorithms. The...

172. High frame rate Skipper CCD-in-CMOS imaging array

Farah Fahim (Fermi National Accelerator Lab. (US))

08/10/2025, 09:00

ASIC

Oral

We present a Skipper-in-CMOS image sensor integrating Skipper-CCD non-destructive readout with CMOS pinned photodiode gain and in-pixel processing. Fabricated in a 180 nm process, a 200×200 array with 15×15 μm² pixels achieves 0.075e⁻ noise via multisampling. The SPROCKET2 ROIC, in 65 nm CMOS, supports 66.7 ksps high-speed readout with low DNL/INL and 10 μV resolution. A 20,000-pixel SPROCKET2...

208. On-Chip Data Transmission for Wafer-Scale MAPS

Joao De Melo (Brookhaven National Laboratory (US))

08/10/2025, 09:20

ASIC

Oral

Wafer-scale monolithic active pixel sensors (MAPS) for particle detectors face significant
challenges in on-chip data transmission due to high resistance and capacitance in CMOS
interconnects, leading to signal distortion, attenuation, dispersion, and inter-symbol
interference (ISI). This contribution outlines these issues in the ALICE ITS3 MOSAIX chip and
presents current solutions by...

163. Front-end and sensor co-simulation methodology as a tool for design and characterisation of pixel detectors

Corentin Lemoine (CERN / IPHC-Strasbourg)

08/10/2025, 09:40

ASIC

Oral

This contribution presents a co-simulation methodology that unifies sensor and front-end circuit modelling for pixel detectors. Traditional simplified signal models often fail to represent realistic particle-induced transients, leading to discrepancies between design-time assumptions and actual performance. The simulation chain enables simulation of a large number of realistic events,...