Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
The design of a hi-Q resonant RF cavity with coupled detection scheme and associated instrumentation is reported for studying quantum vacuum within the framework of Quantum Electrodynamics (QED), the quantum theory of interaction of matter with radiation. Although this system could possibly serve in any general QED, cavity QED and RF applications in the range of a few GHz, the design was specifically...
The concept of a tile hadron calorimeter (HCAL) for the International Linear Collider (ILC) has been developed. A major aspect is the improvement of the jet energy resolution by measuring details of the shower development and combining them with the data of the tracking chamber (particle flow). The concept utilizes scintillating tiles that are read out by novel Silicon Photomultipliers (SiPMs) and...
High energy physics experiments in the intensity frontier push at the limit the detector resolutions. This is the also case for the upgrade of the MEG experiment that requires a design of a new drift chamber to track 52.8 MeV positrons with a single hit resolution of about 100 µm. In order to to compare the tracking performances of various prototypes implementing different cell configurations, a high...
The current weak signal measuring equipment is too large, expensive and lack of low-frequency measuring ability in the metrology support of hydro-acoustic detection. A low-cost, applicable, self-research and development weak signal detector is designed and realized through a 24-bit dynamic signal acquisition card. The software based on NI LabWindows/CVI adopts DAQmx, digital locked-in and cascade...
A novel quantum effect photodetector array consisted of AlAs/GaAs/InGaAs/GaAs/InAs/ quantum-dots in quantum-well hybrid structure has been tested. It showed a wide response wavelength range from 400nm to 1000nm. The low threshold voltage (−0.8V) and the high responsibility (10A/W) at 77K made it a good choice for optical detection. A custom-made capacitor feedback transimpendance amplifier (CTIA)...
Some National Metrology Institutes have shown an interest to build a copy of our very low thermal electromotive forces (EMFs) scanner since we designed it in our laboratory a few years ago. This device has been developed to calibrate up to 12 Zener-based voltage standards by comparison to a programmable Josephson voltage standard but can be implemented in any set-up that requires electrical contacts...
The DEPFET is a new type of active pixel particle detector. A MOSFET is integrated in each pixel providing the first amplification stage of the readout electronics. Excellent noise parameters are obtained with this layout. The DEPFET sensor will be integrated as an inner detector in the BELLE II experiment. A flexible measuring system with a wide control cycle range and minimal noise was designed...
The emergence of carbon nanotube (CNT) based infrared (IR) detectors has welcomed new opportunities for IR detection for both military and civil applications. This led to research and development of high resolution CNT based IR imaging systems. In this paper, a differential input charge integrator current amplifier was designed to read the photocurrent of CNT based IR detectors. Also, all parts, including...
During image guided interventional procedures, superior resolution and image quality is critically important. Operating the MAF in the new High Definition (HD) fluoroscopy mode provides high resolution and increased contrast-to-noise ratio. The MAF has a CCD camera and a 300 micron cesium iodide x-ray convertor phosphor coupled to a light image intensifier (LII) through a fiber-optic taper. The MAF...
We describe a new exact analytical algorithm for estimating the single event rates in detectors from random coincidence data (for randoms variance reduction), and detector efficiencies from true coincidence data (for normalization), in positron emission tomography (PET). The estimates are derived from the ratios of the co-fan sums of coincidence events between individual detectors. The co-fan for...
An integrated and comprehensive model of a hybrid pixel detector has been developed by using Matlab and Simulink. Prior to this streamlined model, various team members (physicists, electronics and software engineers) used different software tools to separately simulate individual entities of the system. As a consequence, it was difficult to exchange and integrate the results, as well as to interpret...
The CMS Silicon Strip Tracker is the largest detector of its kind ever operated, with about 200 m2 of silicon surface. The Silicon Strip Tracker it is the sub-detector with the highest number of detector modules within CMS. Given the complexity of the device, a variety of tools was developed and is used to measure the status of the detector in real time and allow for data qualification and corrective...
The T2K Fine Grained Detector is an active neutrino target that uses segmented scintillator bars to observe short-range particle tracks. 8448 multi-pixel photon counters coupled to wavelength shifting fibres detect scintillator light. An application specific integrated circuit shapes the MPPC waveform and uses a switched capacitor array to store up to 511 analog samples over 10.24μs. High and low...
Many acquisition schemes have been proposed and investigated for Ultra-Wideband (UWB) systems, however, most of them setup for low duty-cycle Impulse Radio UWB (IR-UWB) signals, with the assumption that the pulse repetition time is greater than the maximum excess delay of channels, so that intra- and inter-frame interference can be bypassed. This assumption limits the transmission rate and cannot...
A new kind of 8??8 focal plane array (FPA) based on glow discharge detector (GDD) elements was constructed and tested experimentally. First THz images of this FPA are presented. The data acquisition of this system is performed with a special VLSI board designed for this system. Switching mode is necessary in order to save energy and video rate operation. Recent investigations proved that it is possible...
A multi-channels data acquisition system for nuclear spectroscopy applications with HPGe detectors has been designed, manufactured and tested. It is based on a front-end electronics for analog signal conditioning, followed by a free running analog to digital converter. The digital output data-stream is collected and transmitted on twisted copper wires by means of programmable logic devices and dedicated...
Iterative image reconstruction of data measured by a Compton scattering camera has to overcome various difficulties, e.g. a large amount of data, noise arising from both low counts recorded and imaging response, etc. Several approaches were proposed trying to attain an efficient Compton scattered data reconstruction. A forward step is introduction of list-mode data acquisition, which represents an...
In this paper, we present two circuits designed for pulse readout of a semiconductor PET system: a fast low noise low power front-end preamplifier/shaper, and a processing circuit performing time tagging, energy measurement and digital interfacing with the data acquisition system. Considerations on noise, speed and power consumption are discussed.
We present dedicated circuit techniques and strategies to design and assemble dense multi-channel microsystems intended for ENG recording. Efficient neural interfacing circuits are proposed and high-fidelity data reduction strategies are demonstrated. Also, an on-chip power management scheme based on automatic biopotential detection is suggested. The presented strategy is expected to improve power...
The Daya Bay RPC readout system is responsible for collecting Muon hit events for the anti-neutrino procedure.The expected readout system should be capable of converting analog hit signals from RPC (Resistance Chamber Plate) detectors into digital signals which will be buffered and then uploaded to online DAQ (Data Acquisition) systems as well as reporting trigger information. The numerous and relatively...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.