The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This article describes a method for recognizing Ukrainian car's license plates of the most common format, which has a high percentage of correct recognition and applied in practice.
A network of 15 Timepix pixel detectors was installed within the ATLAS experiment at CERN, Geneva. The network is capable of measuring the composition and spectral characteristics of the radiation fields in real-time. Its operation is managed by a dedicated software system. The presented article describes primary software components of this system responsible for communication with detector hardware,...
In recent years Schottky-diode technologies gain influence in THz systems because of their large sensitivity, wide range, high power capability and room-temperature operation. Schottky diodes rectify the RF signal directly and therefore change their current-voltage characteristic. Considering the square-law detection for low-power and linear detection for high power, dynamic ranges of typically 90dB...
Terahertz (THz) and sub-THz frequency emitter-detector technology is receiving increasing attention because of key apphcations in several fields. In particular, ultrafast THz receivers are desired for compact, ultrafast spectroscopy and communication systems. While most of the available THz detectors (thermal, FET …) are currently limited in response time by slow thermal processes and/or by the read-out...
Quantum dots (QDs) can be incorporated into solid state photonic devices such as cavities or waveguides that enhance the light-matter interaction. A near unit efficiency light-matter interaction is essential for deterministic, scalable quantum information devices [1]. In this limit, a single photon input into the device will undergo a large rotation of the polarization of the light field due to the...
With the continuous advances in the development of high-intensity lasers, laser-driven ion acceleration may become a compact alternative to produce ions with energies suitable for medical applications [1]. However, the unique properties of laser-accelerated ions, such as the mixed radiation field, a broad energy spectrum of up to 100% energy spread and ion fluxes exceeding 107 protons / cm2 / ns are...
Autoradiography is a method that allows to take ex-vivo images of thin sections of tissue labelled with a radioactive tracer. In the present work, we aim to study the feasibility of autoradiography with CMOS (Complementary Metal Oxide Semiconductor) Mimosa-28 by using 2-Deoxy-2-18F-fluoro-D-glucose (18F-FDG). Autoradiography allows a functional imaging pixelated with a resolution equivalent to optical...
The GEMINI front-end system that will operate at LoKI experiment at ESS is expected to be exposed to radiation for a Total Ionizing Dose (TID) up to 200krad during Triple-GEM detector usage. Analyzing the effect of ionizing radiation on chip gives important information on its robustness, critical for architecture validation. After irradiation with a total dose of 15 Mrad core elements of GEMINI channels...
A full High Energy Physics (HEP) data analysis is divided into multiple data reduction phases. Processing within these phases is extremely time consuming, therefore intermediate results are stored in files held in mass storage systems and referenced as part of large datasets. This processing model limits what can be done with interactive data analytics. Growth in size and complexity of experimental...
Experimental results about tests on a commercial power bricks under radiations is presented. The experimental obtained results are very interesting in order to evaluate the possibility to use particular electronic device, which can be used in harsh environment. The power bricks tested in this paper highlights interesting technical specification.
The electrocardiographic tracing represents one of the most versatile pre-diagnostic tools and of greater clinical use at the present time. However, there are indicators that are difficult to observe by a health specialist, such as the so-called J-point and ST-segment elevation, useful in the assessment of ischemia. The present work proposes an improvement of the algorithm “Rising Falling Transition...
Experiments in particle physics produce enormous quantities of data that must be analyzed and interpreted by teams of physicists. This analysis is often exploratory, where scientists are unable to enumerate the possible types of signal prior to performing the experiment. Thus, tools for summarizing, clustering, visualizing and classifying high-dimensional data are essential. In this work, we show...
Faster alternatives to a full, GEANT4-based simulation are being pursued within LHCb experiment. In this context the integration of the Delphes toolkit in the LHCb simulation framework is intended to provide a fully parameterized option. Delphes is a modular software designed to perform fast simulations by propagating stable particles using a parametric approach and providing reconstructed physical...
Accurate estimation of distortion-free spectrum is important but difficult in various applications including spectral CT systems. To reconstruct the incident spectrum, there are two key problems to solve. One is the acquisition of detector response function. Different from many existing methods that either require detailed Mont-Carlo modeling of the detector system, or require monochromatic light...
We are developing a PET detector capable of measuring both time-of-fight (TOF) and depth-of-interaction (DOI) with a goal to improve resulting image quality and accuracy. Phoswich designs have been realized in PET detectors to measure DOI for more than a decade. However, PET detectors based on phoswich designs put great demand on the readout circuit, which has to differentiate the pulse shape produced...
A detailed study of hadronic interactions is presented using data recorded with the highly granular CALICE silicon-tungsten electromagnetic calorimeter. The predictions of several Monte Carlo GEANT4 models are compared with experimental data, taken at FNAL in 2008. The contribution recaps results published in 2015 and a set of new results available since the beginning of 2016. The published results...
The MicroBooNE experiment is a Liquid Argon Time Projection Chamber (LArTPC) detector located in the Booster Neutrino Beamline (BNB) at Fermilab at a baseline of 470 m and contains an active mass of 89 tons. The detector consists of a 2.5m × 2.3m × 10.4m TPC and includes an array of 32 PMTs used for triggering purposes. The inner TPC is housed in an evacuable and foam insulated cryostat vessel with...
Monolithic PET detector design is promising for low cost, high packing fraction, intrinsic depth-of-interaction (DOI) capability as well as potentially better energy and timing resolution compared to the conventional segmented crystal-based detector design. In this work, we developed a monolithic detector with 3D positioning capability and readout channel number compression. The detector contains...
Fast and accurate lost radioactive source positioning is of critical importance for the prevention of radiation damage in the accident. Traditional instruments with low detection efficiency cost lots pf time and energy, and may lead to harms to the operator's health. A portable detector to directly determine the incident angle of gamma rays is promising for the homeland security applications. In this...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.