A5024994463- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- CCD and CMOS Imaging Sensors
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Atomic and Subatomic Physics Research
- High-Energy Particle Collisions Research
- Medical Imaging Techniques and Applications
- Advanced Optical Sensing Technologies
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Radiation Effects in Electronics
- Radiation Therapy and Dosimetry
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Photonic and Optical Devices
- solar cell performance optimization
- Advanced Semiconductor Detectors and Materials
- Silicon and Solar Cell Technologies
- Advanced X-ray and CT Imaging
- Photovoltaic System Optimization Techniques
- Photocathodes and Microchannel Plates
- Thin-Film Transistor Technologies
Fondazione Bruno Kessler
2015-2024
Istituto Nazionale di Fisica Nucleare, Trento Institute for Fundamental Physics And Applications
2016-2024
Ferioli & Gianotti (Italy)
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2020-2024
Free University of Bozen-Bolzano
2022-2023
Istituto Nazionale di Fisica Nucleare
1990-2023
D. Mendeleyev University of Chemical Technology of Russia
2023
University of Pisa
2009-2023
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2007-2023
University of Milano-Bicocca
2019-2022
Time of flight (TOF) in positron emission tomography (PET) has experienced a revival interest after its first introduction the eighties. This is due to significant progress solid state photodetectors (SiPMs) and newly developed scintillators (LSO derivatives). Latest developments at Fondazione Bruno Kessler (FBK) lead NUV-HD SiPM with very high photon detection efficiency around 55%. Despite large area 4×4 mm2 it achieves good single time resolution (SPTR) 180±5ps FWHM. Coincidence (CTR)...
In this paper, we present the full characterization of a new high-density (HD) cell silicon photomultiplier (SiPM) technology for ultraviolet (UV) and blue light detection, named near UV HD SiPM. Thanks to an optimized border region around each cell, were able develop devices having very high detection efficiency and, at same time, dynamic range. We produced SiPMs with square pitch 15, 20, 25, 30 μm featuring peak in violet ranging from 40% 55%, according size. tested time-of-flight positron...
In this paper, we report on the radiation resistance of 50-micron thick LGAD detectors manufactured at Fondazione Bruno Kessler employing several different doping combinations gain layer. with layer Boron, Boron low-diffusion, Gallium, Carbonated and Gallium have been designed successfully produced. These sensors exposed to neutron fluences up $\phi_n \sim 3 \cdot 10^{16}\; n/cm^2$ proton $\phi_p 9\cdot10^{15}\; p/cm^2$ test their resistance. The experimental results show that Gallium-doped...
Abstract In this paper we present the performance of a new SiPM that is sensitive to blue light and features narrow metal-filled trenches placed in area around single-photon avalanche diodes (SPADs) allow an almost complete suppression internal optical crosstalk. particular, show benefits technological upgrade terms electro-optical when compared previous technology which had only partial screening between SPADs. The most relevant effect much higher bias voltage can be applied device before...
In this contribution we will review the progresses toward construction of a tracking system able to measure passage charged particles with combined precision ∼10 ps and μm, either using single type sensor, concurrently position time, or combination time sensors.
Inorganic scintillators are widely used for fast timing applications in high-energy physics (HEP) experiments, time-of-flight positron emission tomography and time tagging of soft hard x-ray photons at advanced light sources. As the best coincidence resolution (CTR) achievable is proportional to square root scintillation decay it worth studying cross-luminescence, example BaF2which has an intrinsic yield about 1400 photons/MeV. However, bands BaF2are located deep-UV 195 nm 220 nm, which sets...
In this paper, we present the characteristics and performances of new silicon photomultipliers (SiPMs), produced at FBK, for near-ultraviolet (NUV) light detection, with reduced afterpulsing delayed optical crosstalk. To study these components correlated noise, manufactured SiPMs on wafers featuring different substrate minority-carrier lifetime. This parameter proved to be crucial in determining amount crosstalk caused by photo-generated carriers diffusing from cell active region. With a...
We report on the characterization of near-ultraviolet high-density silicon photomultiplier (SiPM) developed at Fondazione Bruno Kessler (FBK) cryogenic temperature. A dedicated setup was built to measure primary dark noise and correlated SiPMs between 40 300 K. Moreover, an analysis program data acquisition system were allow precise these parameters, some which can vary up seven orders magnitude room temperature demonstrate that it is possible operate FBK high density temperatures lower than...
Silicon photomultipliers (SiPMs) are single-photon sensitive solid-state detectors that becoming popular for several applications, thanks to massive performance improvements over the last years. Starting as a replacement photomultiplier tube (PMT), they now used in medical big high-energy physics experiments, nuclear spectroscopy, biology and light detection ranging (LIDAR) applications. Due different requirements terms of efficiency, noise, etc., optimizations have been introduced by...
We designed, produced, and tested RSD (Resistive AC-Coupled Silicon Detectors) devices, an evolution of the standard LGAD (Low-Gain Avalanche Diode) technology where a resistive n-type implant coupling dielectric layer have been implemented. The first feature works as sheet, freezing multiplied charges, while second one acts capacitive for readout pads. succeeded in challenging goal obtaining very fine pitch (50, 100, 200 um) maintaining signal waveforms suitable high timing 4D-tracking...
We present a novel design of fine segmented low gain avalanchediodes ('GAD) based on trench-isolation technique. The proposed reduces the width no-gain inter-pad region down to less than 10 μm, from 20-80 μm current 'GAD technology, enabling production sensors with small pixel pitch and high fill-factor. Prototypes this new technologywere produced in FBK laboratories. Their electrical characterization terms I-V, measurement response focused laser, indicates that trenches provide isolation...
Monitoring Ultra-High Dose Rate (UHDR) beams is one of the multiple challenges posed by emergent FLASH radiotherapy. Technologies (i.e., gas-filled ionization chambers) nowadays used in conventional radiotherapy are no longer effective when applied to UHDR regimes, due recombination effect they affected by, and time required collect charges. Exploiting expertise field silicon sensors’ applications into clinics, medical physics group University INFN Torino investigating thin sensors as...
The ENUBET project recently concluded the R&D for a site independent design of monitored neutrino beam high precision cross section measurements, in which flux is inferred from measurement charged leptons an instrumented decay tunnel. In this phase three fundamental results were obtained and will be discussed here: 1) beamline not requiring horn relying on static focusing elements allows to perform $\nu_e$ DUNE energy range with 1% statistical uncertainty employing $10^{20}$ 400 GeV protons...
Abstract Designed for accelerator beam diagnostics and photon science applications, KALYPSO is a line array camera that stands out its high-speed performance with the ability to operate at rates up 12 Mfps in continuous readout mode while maintaining full occupancy. In this contribution, system sensor based on TI-LGAD presented. The latest version of employed as diagnostic imaging measure radiation profiles particle KIT accelerator, KARA. system's key features will be presented, including...
In recent years, the gain suppression mechanism has been studied for large localized charge deposits in Low-Gain Avalanche Detectors (LGADs). LGADs are a thin silicon detector with highly doped layer that provides moderate internal signal amplification. Using CENPA Tandem accelerator at University of Washington, response different thicknesses to MeV-range energy from proton beam were studied. Three LGAD prototypes 50~$\mu$m, 100~$\mu$m, 150~$\mu$m characterized. The devices' was determined...
ENUBET has pioneered a novel technique to control the neutrino flux and flavor composition with percent-level precision. This successful R&D effort paved way for new generation of cross-section experiments designed meet precision requirements current oscillation studies. In this talk, we will summarize ENUBET's key achievements outline plans its implementation at CERN
Silicon photomultipliers (SiPM) are photodetectors that have obtained a growing attention in the last years. They single photon sensitivity, but also high dynamic range: output current signal is proportional to number of detected photons and it possible distinguish up tens per each light pulse. In Fondazione Bruno Kessler (Trento, Italy) we developed so called high-density SiPMs, with narrow trenches isolate cells (i.e. single-photon avalanche diodes) fill factor. These detectors feature...
In this work, a compact set-up and three different methods to measure the Photo-Detection Efficiency (PDE) of Silicon Photomultipliers (SiPMs) Single-Photon Avalanche Diodes (SPADs) are presented. The methods, based on either continuous or pulsed light illumination, discussed in detail compared terms measurement precision time. For SiPM, these have feature minimizing effect both primary correlated noise PDE estimation. SiPMs (produced at FBK, Trento, Italy) was measured range from UV NIR,...