نتایج جستجو برای: detectors
تعداد نتایج: 33248 فیلتر نتایج به سال:
Various types of large area silicon microstrip detectors were fabricated for development of radiation-tolerant detectors operational in the LHC ATLAS SCT. The detectors were irradiated with 12-GeV protons at KEK to fluences of 1.7×10 and 4.2×10 protons/cm. Irradiated samples include n-on-n detectors with 4 kΩ cm bulk resistivity and p-on-n detectors with 1 kΩ cm and 4 kΩ cm bulk resistivities. ...
Genetic Programming (GP) is a powerful machine learning technique derived from Genetic Algorithms. We use GP to produce high-performance edge detectors in 1dimensional signals. Using the theory of edge detection to assess candidate detectors produced by GP, we show that this technique can produce detectors that often outperform the established ‘optimal’ detectors. Further, we show that detector...
For their appropriate temporal resolution, scintillator detectors are used in the Alborz observatory. In this work, the behavior of the scintillation detectors for the passage of electrons with different energies and directions were studied using the simulation code GEANT4. Pulse shapes of scintillation light, and such characteristics as the total number of photons, the rise time and the fallin...
In this paper a destriping technique is proposed for pushbroom-type satellite imaging systems. This technique is based on Moment Matching algorithm and assumes a linear response for each detector of imaging system. In the most of the works in this field, the offset parameter in detectors’ response is neglected and images are corrected using only an estimation of gain parameter. Proposed m...
in this paper a new algorithm is presented for coherent radar detection of targets, when distribution of the interference (clutter and noise) is non-gaussian. the neyman-pearson criterion is used for optimal detection and several successive received samples from a radar range cell are used for detection in the same cell. on the basis of recent empirical evidences, the interference distribution ...
One of the most important requirements for industrial pipelines is the leakage detection. In this paper, detection of leak and determination of its amount using radioactive tracer injection method has been simulated by Monte Carlo MCNP code. The detector array included two NaI (Tl) detectors which were located before and after the considered position, measure emitted gamma from radioactive trac...
Scintillation detectors are widely used in the experimental setup for the detection of charged particles. These detectors are able to measure the energy and time-of-flight of the charged particles. Also, they can be used to identify the detected particle. The probability of hadronic interaction between the detected particle and the nuclei of the scintillator atoms is one important issue that m...
A. Introduction B. Optical and Spectrophotometric Detectors 1. Differential refractometry 2. Ultraviolet spectrophotometry 3. Fluorescence detection 4. Infrared spectrophotometric detectors 5. Spectrophotometric detection with post-column chemical reaction C. Some Miscellaneous Detection Systems 1. The mass spectrometer as an HPLC detector 2. Radioactivity detectors 3. Density, electrochemical ...
Energy-sensitive calorimetric detectors that operate at low temperatures ("cryogenic detectors") have recently been applied for the first time as ion detectors in time-of-flight mass spectrometry. Compared to conventional, ionization-based detectors, which rely on secondary electron formation or the charge created in a semiconductor, cryogenic detectors measure low-energy solid state excitation...
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