A5067089812- Advanced X-ray and CT Imaging
- CCD and CMOS Imaging Sensors
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Radiation Effects in Electronics
- Advanced Semiconductor Detectors and Materials
- Particle Detector Development and Performance
- Innovative Educational Technologies
- Education, Psychology, and Social Research
- Risk and Safety Analysis
- Diamond and Carbon-based Materials Research
- Intuitionistic Fuzzy Systems Applications
- Mechanical and Optical Resonators
- Analytical Chemistry and Sensors
- Open Education and E-Learning
- Analog and Mixed-Signal Circuit Design
- Flexible and Reconfigurable Manufacturing Systems
- Augmented Reality Applications
- Manufacturing Process and Optimization
- Force Microscopy Techniques and Applications
Czech Technical University in Prague
2003-2025
European Organization for Nuclear Research
2024
The Hanbury Brown–Twiss (HBT) effect holds a pivotal place in intensity interferometry and gave seminal contribution to the development of quantum optics. To observe such an effect, both good spectral timing resolutions are necessary. Most often, HBT is observed for single frequency at time due its limitations dealing with multifrequencies simultaneously, halting limiting some applications. Here, we report fast data-driven spectrometer built one-dimensional array single-photon-sensitive...
The integration of front-end electronics into pixel enables hybrid detectors to capture a high-resolution X-ray image. decreasing size the technology node allows integrate in tens micrometers pitch. On other hand, pitch leads new problems, such as charge-sharing effect and fluorescent photons high-Z materials. These effects decrease spatial spectroscopic resolution detectors. This article presents novel asynchronous hit allocation algorithm, Winner–Leader–Follower (WLF). proposed algorithm...
Abstract This paper proposes a low power 10-bit asynchronous fully-differential column analog to digital converter (ADC) with successive approximation (SAR) and charge redistribution in 180 nm SoI technology. The ADC is designed for use Spacepix-2 monolithic active pixel sensor. A novel folded architecture of internal capacitive (CDAC) proposed. total capacitance CDAC 512 fF, single unit capacitor only 0.5 fF size 2.5 × 1.4 μm 2 . input the proposed 220 fF. Two columns matrix share double...
Abstract The SpacePix2 monolithic active pixel sensor (MAPS) is a novel ASIC for space radiation monitoring designed in 180 nm SOI CMOS technology. area 3.84 × mm 2 , matrix arranged as 64 array with 60 µm pitch. front-end amplifier signal range 2–80 ke − extended up to 30 Me using backside channel. Diodes integrated the handle wafer each are biased at −150 V. Impinging particle generates charge pulse converted voltage by sensitive (CSA). Maximum memorized peak detector hold (PDH) circuit...
Whenever we want to avoid failures or hazardous events in today’s complex technological systems, it is advisable carry out appropriate risk management. One of the most important aspects management analysis process. The aim this paper show a new method based on Unified Modelling Language (UML), which successfully used software engineering for describing problem domain. also includes small practical example. It shows an example unreeling process cable manufacturing.
Abstract The new X-ray imaging detectors allow capturing an image in various photon energy ranges one shot. This technique is called color imaging, and it becoming a promising method fields such as medical computed tomography, non-destructive material testing. To measure the spectrum shot, discriminant circuits need to be integrated into pixel front-end electronics. Several solutions of in-pixel discriminators exist. However, current designs suffer from low number discrimination bins adjust...
Abstract A new class of photon-counting pixel detectors allows for capturing an image in several photon energy bins one shot. decreased pitch and increased number are needed to enhance the spatial spectral resolution detector. This led requirements readout systems their bandwidths, as more data is generated same detection area. Fast differential serial communication enables high-speed rates, thus providing ideal solution transfer large amounts by detector’s front-end electronics. However,...
Abstract Precise physical models of sensors are essential for developing high precision pixelated detectors. Advanced technologies allowed pixel electronics to be integrated in tens micrometers pitch. Such fine detectors suffer from charge sharing effect and, high-Z materials, also fluorescent photons traversing one or more pixels. This work presents a Monte-Carlo model 2 mm thick 70 μm pitch CdTe sensor designed simulation the absorption X-ray monochromatic photon beams. Charge diffusion...
Abstract The SpacePix3 monolithic active pixel sensor is a novel ASIC for space radiation monitoring designed in 180 nm SOI CMOS technology. detector capable of detecting and differentiating protons, electrons, heavy ions. Its area 3.84×3.84 mm 2 , matrix arranged 64×64 square array with 60 µm pitch. front-end amplifier signal range 1–80 ke - extended up to 30 Me using backside channel. Diodes integrated the handle wafer each are biased at -150 V, creating depleted layer approximately 35...
This paper shows computer animation as a teaching and learning instrument in technical education. Our aim is to show good practice creating animations. The includes an example, which can serve practical guide for teachers of subjects.
The age in which we are living nowadays is characterized by rapid innovation the development of information and communication technologies (ICT). This has a significant influence on education process. article deals with computer animation technical education. Our aim to show taxonomy animation. paper includes practical examples
Modern VLSI technology allows the development of new class X-ray imaging detectors capable capturing an image in various energy ranges one shot. Such spectroscopic have a high demand for spatial and resolution individual photons. With decreas- ing size pixels, charge cloud generated by primary photon interaction, high-Z materials also fluorescent is shared across several pixels. That limits both spectroscopy resolution. This paper presents novel summing algorithm called Winner-Master-Slave...
The goal of this article is the presentation using Flash based animations technological processes in Web packaging education process at our department. Contemporary trend such a traditional field as technology needs use modern tools learning - Internet, e-mail, multimedia, remote access, animation and interactive work. Some years ago was born Department Electrotechnology Czech Technical University, Faculty Electrical Engineering project education, which became part ENPACKED started 1999...
Pixel detectors become an integral part of medical imaging, nondestructive testing, space science and particle physics. Sensors that are bump bonded to readout ASICs made from various materials such as GaAs, Si, CdTe, CdZnTe. Current research tends use CdTe/CdZnTe gamma-ray sensors due its high absorption coefficient in the gamma spectrum. With decreasing size pixel pitch, charge diffusion secondary fluorescent photons cause sharing between neighboring pixels. That decreases spatial spectral...