Conveners
Poster Session
- Giovanni Paternoster (Fondazione Bruno KEssler)
- Coralie Neubuser (Universita degli Studi di Trento and INFN (IT))
Recent advancements in particle physics demand pixel detectors that can withstand increased energy and luminosity in the future collider experiments. In response, MALTA, a novel monolithic active pixel detector, has been developed with a cutting-edge readout architecture. This new class of monolithic pixel detectors is found to have exceptional radiation tolerance, superior hit rates, higher...
Advancements in 3D interconnecting technologies have significantly contributed to the emergence of a new generation of Silicon Photomultipliers (SiPM), which we can refer to as hybrid devices. These devices integrate the functionalities of digital SiPMs with the exceptional performance characteristics of specialized custom technologies. In recent years, the Fondazione Bruno Kessler (FBK) has...
To fully exploit the increased luminosity of the HL-LHC, the CMS Inner Tracker is undergoing a major upgrade to withstand extreme radiation levels of 1.2 Grad and hit rates of 3.2 GHz/ $cm^{2}$ while maintaining a reduced material budget and improved granularity. The detector modules feature thin 3D and planar silicon pixel sensors with a pixel size of 25x100 ยตm, bump bonded to a new ASIC,...
The Upstream Tracker is a novel silicon microstrip detector installed during LHCb Upgrade 1. Since its successful commissioning, it has played a significant role in the experiment's new fully-software trigger system. The efficient performance of the UT detector requires constant monitoring and evaluation of the calibration parameters of over half a million sensors. Here, recent results...
Silicon sensors are widely used in high-energy physics due to their low material budget and radiation hardness. However, they are susceptible to surface breakdown, particularly under humid conditions. This study aims to improve the understanding of the underlying mechanisms by developing new methods to probe the electric field at the sensorโs edge. For planar sensors, avalanche breakdown...
It has become apparent that Silicon, though an excellent choice as a sensing material for current particle detectors, suffers greatly when exposed to heavy radiation, degrading properties like charge collection efficiency and increasing noise levels. Future collider experiments will require it to withstand stronger radiation fields. Therefore, either a frequent replacement of detectors, a leap...
Gallium Nitride (GaN) and its alloys with In or Al are widely utilized in the production of light-emitting diodes, lasers, and sensors for chemical, gas, biological, and pressure detection. GaN is also critical for developing radiation-tolerant sensors used in the space industry, medical diagnostics, and high-energy physics applications. Direct-bandgap binary compounds like GaN are effective...
The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) will increase the integrated luminosity to 3000fb^{-1} and the instantaneous luminosity up to $7.5\times 10^{34} cm^{โ2} s^{โ1}$ in the ATLAS experiment. This results in an average of 200 proton-proton collisions per bunch-crossing compared to 48 in the current Run-3. This increases radiation damage and device occupancy. To cope...
The ATLAS inner detector will be completely replaced with a new all-silicon tracking detector (ITk) in 2026-28 to cope with the challenging conditions of the High Luminosity LHC.
The pixel detector will be located in the innermost part of the ITk detector. It will be instrumented with 3D sensor technology in the innermost layer (L0), where a fluence up to 2 x 1016 neq/cm2 is expected, and...
Low Gain Avalanche Detectors (LGADs) are promising devices for high-precision timing and tracking applications in high-energy physics experiments. This study investigates the effects of radiation damage on LGAD performance following exposure to 24 GeV energy protons. The samples made by Hamamatsu Photonics K.K. were subjected to varying proton fluences (ฮฆ = 1E12-1E16 p/cm^2), and their gain...
Within the CERN EP R&D programme and the AIDAinnova and DRD3 collaborations, innovative and scalable hybridisation and module-integration concepts are pursued for pixel-detector applications in future colliders. Most interconnect processes require specific surface properties and topologies of the bonding pads. An in-house Electroless Nickel Gold (ENIG) plating process is therefore under...
Trench-isolated (TI) LGADs, developed at FBK, are pixelated LGAD implementations where pads are separated by physical trenches etched within the silicon substrate and filled with a dielectric. Developed as an alternative approach to implant-based inter-pad separation (JTEs), this technology promises a dramatic reduction to dead regions, mitigating fill factor issues inherent to small-pitch...
The self-induced signals in trench isolated LGADSs can be driven by the complex interplay of trench-induced defects, electric field distortions, and temperature-dependent carrier dynamics. This self-induced signal phenomenon could be also related to the interplay between the guard ring (GR), trenches, and the n+ bias ring (implanted between two trenches). Such complex relation of many...
Siliconโฌโญ Photomultipliersโฌโญ (SiPMs)โฌโญ areโฌโญ widespreadโฌโญ photonโฌโญ detectorsโฌโญ inโฌโญ high-energyโฌโญ physics.โฌโญ Theirโฌโญ performanceโฌโญ degradesโฌโญ significantlyโฌโญ whenโฌโญ exposedโฌโญ toโฌโญ radiation,โฌโญ particularlyโฌโญ high-energyโฌโญ hadronsโฌโญ (neutronsโฌโญ orโฌโญ protons)โฌโญ thatโฌโญ induceโฌโญ defectsโฌโญ inโฌโญ theโฌโญ siliconโฌโญ lattice.โฌโญ Aโฌโญ moderateโฌโญ levelโฌโญ ofโฌโญ radiationโฌโญ causesโฌโญ damageโฌโญ inโฌโญ SiPMs,โฌโญ...
Silicon tracking detectors in future high energy physics experiments usually requires excellent spatial resolution, nanosecond level timing resolution, good radiation hardness and large area coverage. High-Voltage CMOS sensors, exploiting commercial CMOS technologies, are intrinsically radiation hard and cost-effective for use in large quantities. With successful development in 180nm and 150nm...
The TaichuPix series chips, as sensors designed for the CEPC vertex detector, do not have a complete digital model, resulting in lower accuracy in simulations, especially in the long barrel's forward region. Allpix-Square, as an open-source software, is able to simulate the physical process of silicon pixel detectors and digitization of the front-end electronics. With the beam test results...
The release of the Timepix4 [1] readout chip has opened new possibilities for the utilization of pixel detectors in experimental applications. With its exceptional time resolution (binning approximately 200 ps), larger detection area (512x448 pixels), and extremely high maximum data rate (160 Gbps), it is evident that the scientific community has gained a powerful new tool.
In this...
The Far Detector (FD) of the Deep Underground Neutrino Experiment (DUNE) will feature a Liquid Argon Time Projection Chamber (LArTPC) in which the scintillation light will be detected by Silicon Photomultipliers suited for cryogenic applications. Driven by the requirements of the DarkSide experiment, FBK has developed a SiPM technology for cryogenic applications (NUV-HD-Cryo SiPM) featuring a...
Studies of the silicon dioxide (SiO2) passivation layer in n-on-p silicon sensors, which will be used in the CMS High Granularity Calorimeter (HGCAL), are important for improving their performance not only in High-Luminosity LHC run, but also in future high-energy physics experiments. This work explores a novel method for estimating surface damage in HGCAL sensors. Test diodes with different...
The performance of a 300 um thick silicon low-gain avalanche diode (LGAD) as X-ฮณ ray detector has been experimentally acquired and studied in detail. The LGAD can operate with multiplication gains between $M_s = 10$ and $M_s = 20$, at which a wide energy range X-ฮณ ray spectroscopy using a $^{241}Am$ radiation source has been done. It is shown that the main contribution to the FWHM of the...
The Katherine readout for Timepix3 [6] is among the most widely used acquisition systems for Timepix3 detectors. This device, which utilizes a Gigabit Ethernet interface, has been employed in numerous experiments by various scientific teams. However, as user requirements have evolved, it has become clear that Katherine cannot meet these increasing demands without limitations or additional...
The increased luminosity at the HL-LHC has driven the need for higher radiation resistance in particle sensors, enhanced timing capabilities, and greater granularity in vertex detectors. FBK has advanced 3D detector technology, known for its strong radiation hardness (up to ~2ร10ยนโถ neq/cmยฒ), by introducing innovations like stepper-based lithography to improve pitch reduction and process yield....
The Trans-Iron Galactic Element Recorder for the International Space Station (TIGERISS) is being fabricated to determine the source(s) of galactic cosmic rays by measuring the individual elemental abundances from 5B to 82Pb. In particular, TIGERISS will make definitive measurements of Ultra-Heavy Galactic Cosmic Rays (UHGCRs; Z >29). Thus, TIGERISS measurements will be sensitive to the...
In the new era of HL-LHC experiments, fast-timing detectors are emerging as a critical priority.
Typical requirements include a temporal hit resolution of 50 ps with a fine pitch of 50 ยตm, maintaining high spatial resolution and radiation hardness. These specifications are essential for track separation in high pile-up environments. To address these challenges, the development of...
The Swiss Light Source 2.0, a 4th generation synchrotron radiation source based on a Diffraction-Limited Storage Ring (DLSR), offers high brilliance and coherence with a fundamental pulse repetition rate of 500 MHz. In the soft X-ray branch, Time-Resolved Scanning Transmission X-ray Microscopy (TR-STXM) technique previously utilized Avalanche Photodiodes (APDs) to study dynamic phenomena with...
Nearly all future high-energy particle detectors will employ large areas of radiation hard silicon sensors as their main tracking detectors, facilitating the need for cost-efficient, reliable and large scale production. A promising avenue of research are sensors based on the CMOS imaging process.
Three variations of passive CMOS strip sensors have been designed by the University of Bonn...
The High-Luminosity Large Hadron Collider (HL-LHC) operation will push the CMS experiment to its limits, with an instantaneous peak luminosity of $7.5 \times 10^{34} \, \text{cm}^{-2}\text{s}^{-1}$ and an integrated luminosity of $300 \, \text{fb}^{-1}$ per year. This environment will expose the CMS Inner Tracker (IT) Pixel Detector at the center of CMS to unprecedented radiation, with a 1 MeV...
The excellent time resolution of LGAD and thin PIN silicon sensors allows for the measurement of the particle flux and profile of clinical beams with single particle sensitivity. The experimental results of a proton and carbon ion counter based on a 2.7 ร 2.7 cm2 silicon sensor will be presented. The counter was also integrated with a Time-to-Digital Converter to measure particlesโ crossing...
Recent advantages in detector production have facilitated the manufacture of pixelated 4H-SiC detectors, which can be an alternative to silicon ones especially in the harsh radiation environment, or in the environment with high temperatures, where such sensors profit from their higher band gap. Moreover, thanks to an elastic scattering cross-section of carbon for fast neutrons the SiC sensors...
