IWORID 2025

Session

Detector Systems

7 Jul 2025, 09:00

Bratislava, Slovakia

Conveners

Detector Systems: Opening, Session 1

• Christer Froejd (Mittuniversitetet (SE))

Detector Systems: Session 2

• Ralf Hendrik Menk (Elettra Sincrotrone Trieste)

Detector Systems: Session 3

• Heinz Graafsma

Detector Systems: Session 6

• Cinzia Da Via (The University of Manchester (GB))

Detector Systems: Session 7

• Valeria Rosso

Description

Christer Fröjdh

230. IWORID 2025 opening

Andrea Sagatova (Slovak University of Technology in Bratislava), Christer Froejd (Mittuniversitetet (SE))

07/07/2025, 09:00

talk

The 26th Workshop on Radiation Imaging Detectors, the IWORID 2025, will be opened.

224. Detector Developments for the for the Swiss Light Source Upgrade

Anna Bergamaschi

07/07/2025, 09:20

invited talk

The Swiss Light Source is nearing the completion of its upgrade to a fourth-generation synchrotron, significantly enhancing its brilliance. This leads to a higher photon flux, while improving the coherence of the beam across the entire energy spectrum, from extreme ultraviolet to 80 keV hard X-rays.

To support the increased photon rates, we are developing the MATTERHORN detector, a...

61. Characterization and Performance Evaluation of ITk Pixel Production Modules for the ATLAS Upgrade

Md Arif Abdulla Samy (University of Glasgow (GB))

07/07/2025, 09:50

talk

The ATLAS Inner Detector will be entirely replaced with a state-of-the-art all-silicon tracking detector (ITk) during the 2026–2028 upgrade, designed to withstand the demanding conditions of the High Luminosity LHC (HL-LHC). The pixel detector, positioned at the core of ITk, will feature 3D sensor technology in the innermost layer (L0), where the expected particle fluence reaches up to 2 ×...

19. ITS3 - A truly cylindrical tracker for ALICE

Anna Villani (Universita e INFN Trieste (IT))

07/07/2025, 10:10

talk

ITS3 - A truly cylindrical tracker for ALICE
Anna Villani on behalf of the ALICE Collaboration

The ALICE experiment at the CERN Large Hadron Collider (LHC) is optimized for the study of the strongly interacting state of matter arising in high-energy heavy-ion collisions through the tracking of particles at high multiplicities resulting from the collisions. The ALICE Inner Tracking...

124. ATLAS Inner Tracker Upgrade Pixel Detector

Umberto Molinatti

07/07/2025, 11:00

talk

In the high-luminosity era of the Large Hadron Collider, the instantaneous luminosity is expected to reach unprecedented values, resulting in up to 200 proton-proton interactions in a typical bunch crossing. To cope with the resulting increase in occupancy, bandwidth and radiation damage, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk). The innermost...

109. Performance, calibration and optics robustness of the ATLAS Tile Calorimeter

Tibor Zenis (Comenius University (SK))

07/07/2025, 11:20

talk

The Tile Calorimeter (TileCal) is a sampling hadronic calorimeter covering the central region of the ATLAS experiment, operating at the Large Hadron Collider (LHC) at CERN. TileCal is made of steel as absorber and plastic scintillators as active medium. The scintillators are read-out by wavelength shifting fibres coupled to photomultiplier tubes (PMTs). The analogue signals from the PMTs are...

178. Performance of the Timepix3 Detector Network in ATLAS for Relative Luminosity Measurement in Run-3

Catalina Lesmes Ramirez (Institute of Experimental and Applied Physics, Czech Technical University in Prague)

07/07/2025, 11:40

talk

The Timepix detector network inside the ATLAS cavern has proven to be effective in measuring luminosity and the radiation field composition during LHC Run-2 operation [1]. First tests of Timepix3 in this radiation environment provided promising results so that for Run-3, the network has been upgraded to a two-layer detector stack relying fully on the Timepix3 technology. Each two-layer...

132. Deploying Timepix3 in Low-Radioactivity Natural Settings: Integrated Workflow for Charged Particle Detection and Imaging

Dr Raju Kumar (University of Ghent)

07/07/2025, 12:00

talk

Naturally occurring radionuclides such as potassium (K), uranium (U), and thorium (Th) are primary sources of ionizing radiation (α, β, and γ) contributing to the radiation dose received by quartz and feldspar mineral grains used in luminescence dosimetry/dating. The heterogeneous distribution of radionuclides within or adjacent to individual mineral grains can lead to significant variations...

50. New results from fast timing iLGAD sensors on Timepix4

Daan Jasper Oppenhuis (Nikhef National institute for subatomic physics (NL))

07/07/2025, 12:20

talk

With the High-Luminosity Large Hadron Collider (HL-LHC) the number of events per bunch crossing increases. To cope with these high rates in the pixel trackers, per-pixel time measurements are required, which implies the need for fast sensors. The Inverted Low-Gain Avalanche Detector (iLGAD) is one of the options that is being investigated. This presentation will show the results of an inverse...

100. Large-Area CdTe Detector for X-ray Imaging and Overcoming Crystal Imperfections in CdTe Sensors

Dr Zuzana Melníková (ADVACAM s.r.o.)

07/07/2025, 14:00

talk

Hybrid semiconductor detectors with CdTe sensor chips find wide applications in medical and industrial X-ray radiography. These detectors enable direct radiation detection through their ability to effectively convert ionizing radiation into electrical signals. The design provides excellent detection sensitivity and eliminates analog noise. However, CdTe sensor chips are known to have crystal...

189. First characterization of a GaAs-based Timepix4 detector assembly for X-ray imaging applications

Simone Velardita

07/07/2025, 14:20

talk

Timepix4 is the most recent application-specific integrated circuit (ASIC) developed by the Medipix4 international collaboration at CERN. It features a 448×512 pixel matrix with a 55 μm pitch. Its design supports integration with diverse semiconductor sensors, enabling its use in multiple domains such as X-ray spectroscopy, high-energy particle detection, and medical imaging [1].

Designed...

177. The influence of temperature changes on the spectrometric behavior of Timepix3 detectors with different sensors

Nikola Kurucová (Institute of Nuclear and Physical Engineering, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava)

07/07/2025, 14:40

talk

Timepix3 is an advanced hybrid pixel detector designed for precise particle tracking and energy measurement over a wide range of ionizing radiation [1]. Currently, Timepix3 detectors are equipped with a variety of semiconductor sensors, including silicon (Si), silicon carbide (4H-SiC), gallium arsenide (GaAs), and cadmium telluride (CdTe), each offering specific advantages depending on...

43. A 1M charge integrating hybrid pixel detector for electron diffraction

Khalil Daniel Ferjaoui

07/07/2025, 15:00

talk

Electrons have emerged as an important complement to X-rays in crystallography, particularly for compounds that present challenges in growing crystals sufficiently large for synchrotron radiation (5–10 μm) or laboratory diffractometers (~50 μm). Given the nature of electron-matter interactions, electron diffraction (ED) provides a way to experimentally determine the electrostatic potential of...

228. An overview of HEXITEC and HEXITEC MHz and its applications

Dr Diana D Caprotti (Science and Technology Facilities Council (STFC), UK Research and Innovation (UKRI))

08/07/2025, 14:00

invited talk

The High Energy X-ray Imaging TECHnology (HEXITEC) and the recently developed HEXITEC MHz technologies, developed by the UK’s Science and Technology Facilities Council (STFC), represent significant advancements in spectroscopic X-ray imaging applications. These ASICs are designed for high-resolution, energy-resolved detection of X-rays and gamma rays, and have been optimized for use with...

86. C100: A 4-Megapixel, 2000 FPS Wafer Scale Direct Electron Detection Sensor for 100keV Electron Cyro-Microscopy

Daniel Brown

08/07/2025, 14:30

talk

In the past decade, Electron Cryo-Microscopy (cryoEM) has developed into a popular technique for biological molecular structure determination, driven largely by the rapid development of increasingly capable direct electron detectors. Traditionally, cryoEM has been performed on 300 keV transmission electron microscopes, which are costly to acquire and operate, and consequently out of reach for...

153. Second-Generation Percival Sensor and System for upgraded soft X-ray imaging at FELs and Synchrotrons

Cornelia Wunderer (DESY)

08/07/2025, 14:50

talk

PERCIVAL, "pixellated energy-resolving CMOS imager versatile and large," is a 2-megapixel soft X-ray imager developed for use at FELs and modern-day synchrotrons by a collaboration of light sources (DESY, Elettra, Diamond, Pohang Accelerator Lab, and Soleil) together with Rutherford Appleton Laboratories. To meet the science needs at these facilities, a combination of capabilities is...

171. The prototype DynamiX camera system, a high-frame rate, high-dynamic range hard X-ray integrating detector for 4th generation synchrotrons

Simon Knowles (on behalf of the XIDyn Collaboration)

08/07/2025, 15:10

talk

The advent of fourth-generation synchrotrons, such as the Diamond II upgrade, offers unprecedented flux increases of 10–100×, reaching up to $10^{12}$ photons/s/mm² over a wide energy range (20–100 keV). Fully leveraging these photon fluxes and high X-ray energies necessitates readout chips with exceptional frame rates and dynamic ranges, alongside the use of high-Z sensor materials. To...

70. Optimization of a 3D Micro-Structured Neutron Imaging Sensor Through Combined Simulation Approaches

Matteo Polo (University of Trento and TIFPA)

08/07/2025, 16:00

talk

Neutron imaging offers additional information compared to X-ray imaging because of the different types of interaction of the two different types of radiation. This technique is particularly valuable in fields such as nuclear engineering and non-destructive industrial diagnostics.

Based on 3D sensor technology, an innovative thermal neutron detection and imaging device has been developed...

89. The SABRE South Experiment at the Stawell Underground Physics Laboratory

Zuzana Slavkovská (The Australian National University)

08/07/2025, 16:20

talk

SABRE is an international collaboration that will operate similar particle de-
tectors in the Northern (SABRE North) and Southern Hemispheres (SABRE
South). This innovative approach distinguishes possible dark matter signals
from seasonal backgrounds, a pioneering strategy only possible with a southern
hemisphere experiment. SABRE South is located at the Stawell Underground
Physics...

180. CYGNUS: Directional recoil detection for dark matter, particle physics and nuclear applications

Prof. Gregory Lane (Australian National University)

08/07/2025, 16:40

talk

The Australian National University (ANU) has been conducting studies in directional detector technology, with the aim of building a large detector called CYGNUS. Eventually, such a detector is likely to be located in Australia's new underground physics laboratory at Stawell in regional Victoria.

The ANU group leads the experimental efforts of the Australian CYGNUS-Oz consortium through the...

204. Development of Accurate Dosimetry SiPM-based Detectors for FLASH RT

Georgios Mystridis (University of Foggia, Fondazione Bruno Kessler)

08/07/2025, 17:00

talk

Radiotherapy (RT) using X-rays is the main treatment strategy employed to treat human tumors with ~50% of all cancer patients receiving RT. The major drawback of RT treatment is that in order to deliver a lethal dose to cancerous cells, short- and long-term adverse side-effects are evident due to the irradiation of the surrounding normal healthy tissues that can severely impact the health and...

150. Development of Real-Time FPGA computing for Hyperspectral Imaging with CITIUS

Mr Kyosuke Ozaki (1)

08/07/2025, 17:20

talk

X-ray hyperspectral detectors using charge-integrating pixels detect individual photons at frame rates generally higher than one kilo frames per second (kfps). Owing to the slower analog processing, they enable spectroscopic analysis with sharper energy resolution, typically better than 1 keV FWHM.
CITIUS is a recently introduced large-area, direct-detection X-ray detector, of which the...