To meet the increasingly demanding performance requirements of future High Energy Physics experiments, ongoing and future Monolithic Active Pixel Sensor (MAPS) developments focus on enhancing key characteristics (such as spatial resolution, timing precision, and energy resolution). Achieving these improvements requires advanced and accurate simulation tools.
For the electrical modeling of...
This contribution outlines the development of PixESL[1], a virtual prototyping framework for pixel detectors based on C++/SystemC. It offers a platform for describing detector ASICs designed for High Energy Physics experiments at a high level of abstraction, with the capability to simulate an electronics system from the output of a framework for semiconductor particle interaction, such as...
Future colliders will produce unrivaled levels of luminosity, generating extreme radiation fluences. These environments call for sensors capable of 4D tracking while withstanding extreme radiation damages. 3D-trench electrode sensors developed under the TimeSPOT project show outstanding timing resolution even after fluences up to $\sim$ $10^{17}$ 1-Mev $n_{eq}cm^{-2}$. However, the not yet...
As part of my master’s thesis, I have performed a simulation study of 3D silicon pixel sensors developed by SINTEF, for use in the ATLAS ITk upgrade at CERN. The aim of this work is to reproduce the conditions of a real test beam experiment, where sensors were exposed to a 120 GeV pion beam. The simulation setup replicates the EUTelescope beamline configuration and has been implemented using...
Neutron imaging provides complementary information to X-ray imaging due to the different interactions of these radiation types with matter. This technique is valuable in various fields, including nuclear engineering and non-destructive industrial diagnostics.
Building on advancements in 3D sensor technology, a novel device based on a 3D micro-structured design has been developed for thermal...
We present the implementation of various charge carrier mobility models for diamond sensors in the Allpix Squared simulation framework. These models account for the electric field, temperature, and impurity concentration dependence of mobility to accurately simulate charge carrier propagation in diamond sensors. Furthermore, we implement “radiation damage model” parameters for polycrystalline...
Interest in subsurface lunar water has grown due to plans for a permanent Moon base. A common approach involves sending a rover to drill and analyze soil samples, but site selection is largely random. To improve this, a feasibility study is exploring albedo neutron spectrum measurements, which vary in the presence of water. Hardpix detectors are specifically designed for space radiation...
This is a placeholder for a nice contribution.
In this work, we present a toolkit, wrapped around Allpix, that can be used to study the performance of the HL-LHC CMS Outer Tracker 2S modules. The toolkit generates events with tracking particles targeted at a slice of the user defined geometry of 2S modules and then forwards the resulting Allpix output to a front-end emulator that performs the full hit digitization chain. This presentation...
In high-energy physics, there is a need to investigate silicon sensor concepts that offer large-area coverage and cost-efficiency for particle tracking detectors. Sensors based on CMOS imaging technology present a promising alternative silicon sensor concept.
As this technology follows a standardised industry process, it can provide lower sensor production costs and enable fast and...
The Si3 project aims at the development of a novel radiation detector for medical imaging applications such as Positron Emission Tomography (PET) and Single Photon Emission Computed Tomography (SPECT). The aim is to significantly enhance detector efficiency as well as improve resolution compared to current state-of-the-art.
The detector consists of compact, modular layers of semiconductor...
electronCT explores the use of multiple Coulomb scattering of electrons in matter for tomographic imaging, particularly in the context of radiation therapy with electron beams in the 100–250 MeV energy range. This technique has the potential to provide high-precision imaging of tumors immediately before treatment, utilizing the same accelerator as the therapy itself. The proof of concept for...
The 100µPET project, led by the University of Geneva, the University of Luzern, and the École Polytechnique Fédérale de Lausanne, aims at the development of a small-animal positron emission tomography (PET) scanner with ultra-high-resolution molecular imaging capabilities.
This is achieved with compact and modular stacks of multiple thin monolithic pixel detectors bonded to flexible printed...
Key requirements for future vertex detectors at lepton colliders include spatial resolutions on the order of 3 µm and nanosecond time resolution. Several R&D activities are currently underway to meet these demands, exploring various approaches and technologies. Enhanced Lateral Drift (ELAD) silicon sensors leverage charge-sharing mechanisms to improve spatial resolution through a...
In the context of the ALICE Inner Tracking System upgrade (ITS3) project and the CERN EP R&D, a new large area Monolithic Active Pixel Sensor (MAPS), based on stitching, is being developed in the Tower Partner Semiconductor (TPS) Co. 65 nm CMOS Image Sensor (ISC) process.
Different pixel test structures (TS) were designed to validate the sensor technology through an extensive characterization...
Future lepton and electron-ion collider concepts rely heavily on silicon sensors as primary tracking devices. The Tangerine Project at DESY is actively investigating monolithic active pixel sensors (MAPS) developed using 65 nm CMOS imaging technology for future experiments.
This project provides a comprehensive overview of the research and development of these sensors, covering their...
The OCTOPUS (Optimized CMOS Technology for Precision in Ultra-thin Silicon)
project, part of the DRD3 collaboration, aims to simulate, develop, and evaluate fine-
pixel monolithic sensors using the 65 nm TPSCo process. The project targets a spatial
resolution of 3 µm, a temporal resolution below 10 ns, a material budget of 50 µm
silicon, and an average power consumption below 50 mW/cm² to...
The ATLAS ITk-Pixel and ITk-Strip detectors are planned tracker upgrades for the High-Luminosity LHC utilizing n+-in-p silicon sensors. They must withstand severe irradiation over their operational lifetimes, corresponding to fluences of up to 9x10^15 1-MeV neq/cm, with consequences on charge collection efficiencies. To achieve a precise understanding of the expected performance and to...
In the past few months CERN EP-R&D WP1.2 in collaboration with ALICE ITS3 adapted its Monte Carlo simulation methodology to support a lookup based propagation technique : In a first step the pixel is meshed and a fixed amount of electrons are injected in each node and propagated in the ‘standard’ way using TCAD generated electric field, the final state of these electrons is saved. In a second...
MÖNCH is a charge-integrating hybrid pixel detector with a 25 µm pitch. The charge information collected by individual pixel makes is possible to enhance the detector’s spatial resolution under low flux condiftions, either using conventional interpolation or novel machine learning approaches. For this a thorough understanding of the charge transport is essential, especially for machine...
Our research group is developing a novel, ultra-high resolution, Xray sensor for use in medical imaging CT. The sensor is an edge-on deep-silicon sensor and achieves the resolution by performing charge-fitting on the signal from adjacent pixels for single interactions.
In previous comparisons between measurements and simulations it has been noted that the amount of charge sharing is less in...
Low-Gain Avalanche Detectors (LGADs) are silicon sensors designed to deliver excellent time resolution, with a precision better than 20 ps. This exceptional time resolution makes them highly suitable for applications demanding precise timing measurements, such as high-energy physics experiments and medical imaging. The performance of LGADs is influenced by various factors, including charge...
Silicon Carbide (SiC) features a ten times higher breakdown field and nearly twice the charge carrier saturation velocity than silicon, theoretically enabling faster signal formation and improved timing resolution. The current road towards designing SiC-LGADs has the potential of unlocking ultra-fast timing detectors, with potentially improved radiation hardness over silicon-based LGADs....
Accurate simulations of signal formation in semiconductor detectors with high statistical precision are crucial across all phases of detector development, from initial design through to final qualification. Allpix Squared is a powerful, open-source simulation framework tailored for semiconductor detectors, enabling detailed end-to-end simulations that span from the initial interaction of...
