Conveners
X-ray detectors: 1
- Anna Bergamaschi (Paul Scherrer Institut)
X-ray detectors: 1
- Anna Bergamaschi (Paul Scherrer Institut)
X-ray detectors: 2
- Marco Miliucci (Agenzia Spaziale Italiana - ASI)
X-ray detectors: 2
- Marco Miliucci (Agenzia Spaziale Italiana - ASI)
X-ray detectors: 3
- Manuele Bettelli (IMEM/CNR Parma)
X-ray detectors: 4
- Leonardo Abbene
Ionizing radiation is the foundation of modern society with rapid growth in medical diagnostics and treatment, space exploration, nuclear energy, and border security. However, increased use in recent decades has correlated to higher radiation exposures, with harmful effects to the health of workers and patients. Active monitoring has now become compulsory in many countries to instantaneously...
The importance of energy-resolved photon counting (ERPC) systems for quality enhancements in X-ray images is now widely recognized. Due to the energy-dependence of the X-ray attenuation processes, spectral X-ray imaging represents a key tool for high resolution material detection and quantitative analysis, especially for medical diagnosis and non-destructive testing (NDT) in security and food...
With the rise of $4^{th}$ Generation Synchrotron Light Sources such as the Extremely Brilliant Source (EBS) of the ESRF, the need for direct X-ray detection under high photon flux with moderate to high energies ($30-100 \ keV$ range) has increased. Moreover, multiple medical imaging companies that build prototypal Computed Tomography (CT) scanners need to innovative material able to withstand...
The SIDDHARTA-2 experiment at the DA$\Phi$NE collider aims to perform the first high-precision measurement of kaonic deuterium x-ray transitions to the fundamental level with low systematic uncertainty. To achieve this goal, the experimental apparatus is equipped with 384 Silicon Drift Detectors (SDDs) distributed around its cryogenic gaseous target. The SDDs developed by the SIDDHARTA-2...
X-ray dosimetry is an area of increasing importance in diagnostic radiology, due to the potential for radiation-induced cancer and acute organ damage to body organs such as skin and eyes. There are three aspects to dosimetry in diagnostic radiology: measurement of performance of X-ray equipment, assessment of doses to patients, and assessment of doses to workers. One type of radiation...
X-ray emission measurements offer profound insights into plasma behavior in both spatial and temporal contexts. These findings are critical in understanding various plasma parameters, including ion and electron temperatures, electron density, impurity concentration, and more. We propose an innovative X-ray spectroscopy diagnostic system that integrates a robust, noise-free Gas Electron...
Two new ASICs have been developed for the readout of CdZnTe and similar detectors materials used for hard X-ray measurement. Although the two ASICs are targeted at different applications and use different CMOS process nodes, they implement the same concept of utilising in pixel digitisation and Gbps scale serialisers to operate at high frame rates. A common DAQ design is employed to aggregate...
In this work, we will present the potentialities of new quasi-hemispherical CZT detectors, recently developed at IMEM- CNR Parma (Italy), for high-resolution X-ray spectroscopy of kaonic atoms. Kaonic atoms are formed when a K- is moderated inside a target until it reaches a low enough kinetic energy to be stopped, replacing one of the outer electrons and forming an exotic atom in a highly...
The Enhanced X-ray Timing and Polarimetry (eXTP) mission is a collaboration between Chinese and European research institutes and is designed to study the state of matter under extreme conditions of gravity, density and magnetic field. The primary objectives are to determine the equation of state of matter at densities higher than nuclear, measure QED effects in very high magnetic fields and...
The observation of X- and ฮณ-ray emissions coming from the deep space is fundamental for the study of matter under extreme conditions of gravity and for the understanding of the early Universe. Due to the absorption of X-/ฮณ-rays in the atmosphere, the realization of high spectroscopic-resolution and high-granularity radiation detectors with large format focal planes is made even more...
Thanks to the large photon-collecting area and small anode capacitance, combined with state-of-the-art techniques to reduce the impact of leakage current on the overall electronic noise, Silicon Drift Detector (SDD) technology enables the development of sensors which are particularly suited for high-throughput space-based spectral-timing X-ray astronomy. In this talk, we will present the...
This work reports on the development of innovative energy-dispersive X-ray detection systems based on monolithic arrays of Silicon Drift Detector (SDD). We present the adoption of SDDs in different configurations to enhance properties like detection efficiency, throughput capability, and compactness, in addition to high-energy resolution.
Regarding detection efficiency, we propose a solution...
Hybrid X-ray single photon-counting and charge integrating detectors developed at the Paul Scherrer Institute perform outstandingly in many hard X-ray experiments, both at synchrotrons and XFELs, but they show limitations in the soft X-ray energy region. The main factors that limit the detection of soft X-rays are the poor quantum efficiency, due to the short attenuation length of soft X-rays,...
Recently, in the framework of the AVATAR X project (funded by the Italian Ministry for University and Research), we developed energy-resolved photon counting (ERPC) X-ray scanners based on CZT detectors for contaminant detection in food industry. In this work, we will present the results from the analysis of energy-resolved X-ray images from CZT linear array detectors. The key steps of image...
New instruments require detectors exploiting high dynamics to cover a large energy band and very high performance in terms of efficiency, spectroscopy, imaging, and, in particular after the launch of IXPE, high polarimetric capabilities. Recently, ASI funded a project (โ3D-CZT Module for spectroscopic imaging, timing and polarimetry in hard X-/soft ฮณ-rays satellite mission - 3DCaTMโ) dedicated...
Hydrogenated amorphous silicon has been used since many years in the fabrication of devices related to optoelectronics, such as solar cells, thin-film transistors and other applications. To obtain a detector grade device it is necessary to reduce the number of dangling bonds inside the material by introducing hydrogen into the material to passivate them. 10-14% is the typical value of...
Low Temperature Detectors (LTDs) are thermal detectors that are operated at cryogenic temperatures and measure the energy deposition via conversion to heat. Unlike HPGe, their spectral resolution is not limited by the statistics of charge creation and collection, and they can thus achieve exceptional energy resolutions.
This performance comes at a price. The cryogenic environment (the...
Single photon counting detectors developed at PSI, like MYTHEN and EIGER, are the detector of choice of many imaging ad diffraction experiments at synchrotrons and the JUNGFRAU charge integrating detector is widely used at Free Electron Lasers thanks to its reliability and large dynamic range.
In this presentation we will discuss the new developments carried out at PSI to improve the...
LaBr3:Ce crystals have been introduced for radiation imaging in medical physics, with photomultiplier or single SiPM readout. An R&D was pursued with 1" LaBr3:Ce to realize compact large area detectors with SiPM array readout, aiming at high light yields, good energy resolution, good detector linearity and fast time response for low-energy X-rays.
A natural application was found inside...
Timepix4 is the readout chip produced by the Medipix4 international Collaboration for hybrid pixel detector assemblies, developed to provide particle identification and tracking with high spatial and timing resolution. The chip is composed of 448 x 512 pixels with a size of 55 ยตm x 55 ยตm, which can be coupled to a sensor with a matching pixel structure, for a total active area of about 7...
