A5013352787- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Luminescence Properties of Advanced Materials
- Nuclear Physics and Applications
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Advanced Semiconductor Detectors and Materials
- Perovskite Materials and Applications
- Radiation Therapy and Dosimetry
- Advanced X-ray and CT Imaging
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Black Holes and Theoretical Physics
- Terahertz technology and applications
- Solid-state spectroscopy and crystallography
- Distributed and Parallel Computing Systems
- Particle Accelerators and Free-Electron Lasers
European Organization for Nuclear Research
2016-2025
Université Claude Bernard Lyon 1
2025
Centre National de la Recherche Scientifique
2025
Institute of High Energy Physics
2012-2024
A. Alikhanyan National Laboratory
2022-2024
University of Antwerp
2024
University of Zurich
2014-2023
University of Leeds
2022
University Medical Center Groningen
2022
University of Groningen
2022
This paper presents new developments in inorganic scintillators widely used for radiation detection. It addresses major emerging research topics outlining current needs applications and material sciences issues with the overall aim to provide an up-to-date picture of field. While traditional forms have been crystals ceramics, on films, nanoparticles, microstructured materials is discussed as these can bring functionality therefore find The last part contribution reports very recent...
Solid state photodetectors like silicon photomultipliers (SiPMs) are playing an important role in several fields of medical imaging, life sciences and high energy physics. They able to sense optical photons with a single photon detection time precision below 100 ps, making them ideal candidates read the generated by fast scintillators flight positron emission tomography (TOF-PET). By implementing novel high-frequency readout electronics, it is possible perform completely new evaluation best...
Since the seventies, positron emission tomography (PET) has become an invaluable medical molecular imaging modality with unprecedented sensitivity at picomolar level, especially for cancer diagnosis and monitoring of its response to therapy.More recently, combination X-ray computed (CT) or magnetic resonance (MR) added high precision anatomic information in fused PET/CT PET/MR images, thus compensating modest intrinsic spatial resolution PET.Nevertheless, a number challenges call further...
Scintillator based radiation detectors readout by SiPMs successively break records in their reached time resolution. Nevertheless, new challenges of flight positron emission tomography (TOF-PET) and high energy physics are setting unmatched goals the 10 ps range. Recently it was shown that frequency (HF) significantly improves measured single photon resolution (SPTR), allowing to evaluate intrinsic performance large area devices; e.g. FBK NUV-HD mm2 40 m avalanche diode (SPAD) size achieve...
Large Stokes shift fast emitters show a negligible reabsorption of their luminescence, feature highly desirable for several applications such as fluorescence imaging, solar-light managing, and fabricating sensitive scintillating detectors medical imaging high-rate high-energy physics experiments. Here we obtain high efficiency luminescence with significant by exploiting fluorescent conjugated acene building blocks arranged in nanocrystals. Two ligands equal molecular length connectivity, yet...
The coincidence time resolution (CTR) of scintillator based detectors commonly used in positron emission tomography is well known to be dependent on the scintillation decay () and number photons detected (), i.e. . However, it still an open question what extent rise other fast or prompt photons, e.g. Cherenkov at beginning process influence CTR. This paper presents measurements rate for different LSO type crystals, LSO:Ce, LYSO:Ce, LSO:Ce codoped Ca LGSO:Ce. For various LSO-type samples...
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)...
The coincidence time resolution (CTR) becomes a key parameter of 511keV gamma detection in flight positron emission tomography (TOF-PET). This is because additional information obtained through timing leads to better noise suppression and therefore signal ratio the reconstructed image. In this paper we present results CTR measurements on two different SiPM technologies from FBK coupled LSO:Ce codoped 0.4%Ca crystals. We compare performed at separate test setups, i.e. CERN FBK, showing that...
Scintillation crystals have a wide range of applications in detectors for high energy and medical physics. They are recquired to not only good resolution, but also excellent time resolution. In applications, L(Y)SO commonly used flight positron emission tomography (TOF-PET). This study aims at determining the experimental theoretical limits timing using based scintillators coupled silicon photomultipliers (SiPMs). Measurements on time-over-threshold method coincidence setup utilizing...
A key step to improve the coincidence time resolution of positron emission tomography detectors that exploit small populations promptly emitted photons is improving single photon (SPTR) silicon photomultipliers (SiPMs). The influence electronic noise has previously been identified as dominant factor affecting SPTR for large area, analog SiPMs. In this work, we measure achievable with front end readout minimizes noise. With circuit, measured one FBK NUV avalanche photodiode (SPAD) was also...
Inorganic scintillators with high density and light yield are of major interest for applications in medical imaging energy physics detectors. In this work, the optical scintillation properties Mg co-doped Ce:Gd3Al2Ga3O12 crystals, grown using Czochralski technique, have been investigated compared ones prepared identical technology. Improvements timing performance samples respect to measured, namely a substantial shortening rise time decay components lower afterglow were achieved. particular,...
Comparison of the timing performance different silicon photomultipliers (SiPMs) can be useful for applications that employ these devices. In our study, we characterize some currently available SiPMs to compare single photon time resolution (SPTR) values measured using a 420 nm laser with pulse width 42 ps FWHM. SPTR in range 175–330 FWHM were most 3 × mm2 and 4 devices varied producer type SiPM. Factors influencing including area, cell non-uniformity SPAD (single avalanche diode) jitter...
Bismuth germanate (BGO) shows good properties for positron emission tomography (PET) applications, but was substituted by the development of faster crystals like lutetium oxyorthosilicate (LSO) time-of-flight PET (TOF-PET). Recent improvements in silicon photomultipliers (SiPMs) and fast readout electronics make it possible to access Cherenkov photon signal produced upon 511 keV interaction, which makes BGO a cost-effective candidate TOF-PET. Tails time-delay distribution, however, remain...
The emergence of new solid-state avalanche photodetectors, e.g. SiPMs, with unprecedented timing capabilities opens ways to profit from ultrafast and prompt photon emission in scintillators. In time flight positron tomography (TOF-PET) high energy detectors based on scintillators the ultimate coincidence resolution (CTR) achievable is proportional square root scintillation rise time, decay reciprocal light yield, CTR∝τrτd∕LY. Hence, precise study very first tens picoseconds indispensable...
Abstract The technological challenge imposed by the time resolution essential to achieve real-time molecular imaging calls for a new generation of ultrafast detectors. In this contribution, we demonstrate that CdSe-based semiconductor nanoplatelets can be combined with standard scintillator technology 80 ps coincidence on hybrid functional pixel. This result contrasts fact overall detector light output is considerably affected loss index-light-guiding. Here, exploit principle 511 keV energy...
Achieving fast timing in positron emission tomography (PET) at the level of few tens picoseconds is limited by photon rate existent materials with standard scintillation mechanisms. This has led to consider quantum confined excitonic sub-1 ns semiconductors as a viable solution enhance amount fast-emitted photons produced per gamma event. However introduction nanocrystals and nanostructures into domain radiation detectors challenging problem. In order move forward along this line, bulk...
Objective.Time-of-flight-positron emission tomography would highly benefit from a coincidence time resolution (CTR) below 100 ps: improvement in image quality and patient workflow, reduction of delivered dose are among them. This achievement proved to be quite challenging, many approaches have been proposed being investigated for this scope. One the most recent consists combining different materials with complementary properties (e.g. high stopping power 511 keVγ-ray fast timing)...
The use of scintillators for the detection ionizing radiation is a critical aspect in many fields, including medicine, nuclear monitoring, and homeland security. Recently, lead halide perovskite nanocrystals (LHP-NCs) have emerged as promising scintillator materials. However, difficulty affordably upscaling synthesis to multigram level embedding NCs optical-grade nanocomposites without compromising their optical properties still limits widespread use. In addition, fundamental aspects...
Lead halide perovskite nanocrystals (LHP-NCs) embedded in polymer matrices are gaining traction as next-generation radiation detectors. While progress has been made on green-emitting CsPbBr3 NCs, scant attention given to the scintillation properties of CsPbCl3 which emit size-tunable UV-blue light matching peak efficiency ultrafast photodetectors. In this study, we explore characteristics NCs produced through a scalable method and treated with CdCl2. Spectroscopic, radiometric, theoretical...
Abstract The decay kinetics of PbWO 4 luminescence and scintillation is investigated in a broad time scale 10 −9 to −3 mainly at room temperature using selected set crystals. light sum released different gates estimated showing rather high content slow recombination processes related the green emission component. Correlations are found among absolute intensity, crystal yield, amplitude very decay.
The main objective of this contribution is to point out the potentialities cerium doped LuAG single crystal as pixels and fibers. We first show that after optimization growth conditions using Bridgman technology, composition exhibits very good performances for scintillating applications (up 26 000 photons/MeV). When grown with micropulling down fiber shapes can be obtained while intrinsic are preserved. For future high energy experiments requiring new detector concepts capable delivering...
Time of flight (TOF) measurements in positron emission tomography (PET) are very challenging terms timing performance, and should ideally achieve less than 100 ps FWHM precision. We present a time-based differential technique to read out silicon photomultipliers (SiPMs) which has 20 electronic jitter. The novel readout is fast front end circuit (NINO) based on first stage current mode amplifier with Ω input resistance. Therefore the inputs connected differentially SiPM's anode cathode ports....
Highest time resolution in scintillator based detectors is becoming more and important. In medical detector physics L(Y)SO scintillators are commonly used for of flight positron emission tomography (TOF-PET). Coincidence resolutions (CTRs) smaller than 100 ps FWHM desirable order to improve the image signal noise ratio thus give benefit patient by shorter scanning times. Also high energy there demand timing capabilities calorimeters down 10 ps. To achieve these goals it important study whole...