Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 1464 for “"Detectors"”.
-
Detectors in Medical Physics Measuring Dose by Detectors
… the doses were obtained by using three method of detectors suck as the ion chamber, TLDs, and films. Approximately the same results of doses were obtained for all measurement by using different detectors. Therefore, these detectors are reliable to be used in clinical applications.</p>
-
Learning a Family of Detectors
… Support Vector Machine learning. The resulting detectors are tuned to specific variations in the foreground class. They also serve to evaluate hypotheses of the foreground state. When the image masks for foreground objects are provided in training, the detectors can also produce object …
-
Development of GaAs pixel detectors
… requirements on the two general purpose detectors: fast signal formation and readout, a high density of channels and radiation hardness of sensors and electronics are essential. Semiconductor pixel detectors, installed closest to the beam pipe in the innermost part of the tracking …
-
Background studies for DarkSide Detectors
… source of backgrounds in liquid argon based detectors. In this thesis, I report the results from my studies of backgrounds from 42Ar/42K decays using DarkSide-50 data. The specific radioactivity for 42Ar/42K in DarkSide-50 is found to be on the order of few tens of micro-Bq per kg of natural …
-
Position sensitive detectors in GaAs
… of gallium arsenide position sensitive detectors. These are aimed at various applications with the original motivation being experimental particle physics. An account is given of basic semiconductor physics relevant to particle detectors. A review of electronics applicable to reading out …
-
3D detectors for synchrotron applications
3D detectors are a novel variety of photodiode radiation detector, invented by Parker, Kenney and Segal (1997). Instead of having n- and p-type contacts on the front and back surfaces of a silicon substrate, like a standard photodiode, they have columns of doped material passing through the …
-
Motion sensitivity of flame ionization detectors
A portable gas chromatograph, using a single flame ionization detector, was constructed. The unit was tested for response to surge, sway and heave accelerations up to 0.3g. Also the detector's response was studied for roll and pitch up to 25 degrees with periods ranging from 3 to 20 seconds. The …
-
Integrated nanoscaled detectors of biochemical species
Rapid and reliable diagnostics of a disease represents one of the main focuses of today’s academic and industrial research in the development of new sensor prototypes and improvement of existing technologies. With respect to demographic changes and inhomogeneous distribution of the clinical …
-
Characterization of the CMS pixel detectors
… which is one of the two general purpose detectors at the LHC. The main tasks of the system are vertex detection and flavor tagging. The high luminosity and the high particle multiplicity as well as the small bunch spacing at the LHC impose great challenges on the pixel detectors: …
-
Multispectral Metamaterial Detectors for Smart Imaging
… on the development of 4th generation infrared detectors for the realization of a new generation of infrared focal plane array. To achieve this goal, we investigate metamaterials to realize multicolor detectors with enhanced quantum efficiency for similar function to a human retina. The key idea …
-
Wafer Level Characterization of Infrared Detectors
… wafer level fabrication process for these detectors. A recent DARPA program called Wafer level Infrared Detectors (WIRED) is exploring new integration schemes for developing low cost photonic detectors, which have higher speed and sensitivity compared to thermal detectors. Such efforts will …
-
Pixellated radiation detectors for scientific applications
… two classes of science grade imaging radiation detectors. The first class is Monolithic Active Pixel Sensors (MAPS). The advances in CMOS fabrication technologies over the last four decades allowed MAPS to compete with Charge-Coupled Devices (CCD) in many applications. The technology also …
-
Stellar interferometry - detectors and the atmosphere.
… visibility modulus measurements with various detectors. The result of these calculations and other ancillary considerations was to choose the Silicon Avalanche Photodiode (Si APD) operated in a photon counting mode. Although Si APDs have been available for several years, no commercial photon …
-
Astroparticle physics with nuclear track detectors
… were based on the use of plastic Nuclear Track Detectors, which records the passage of ionizing particles; by using some chemical reagents such passage can be make visible at optical microscopes.
-
Neutron flux perturbation by foil detectors
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1961.
-
MicroGC: Of Detectors and their Integration
… This research focuses on the development of gas detectors and their integration, in different styles, primarily for gas chromatography. Utilizing fabrication techniques used in semiconductor industry and exploiting scaling laws we investigate the ability to improve on conventional gas separation …
-
Alternate configurations for blocked impurity band detectors
Silicon Blocked Impurity Band (BIB) detectors are highly efficient, radiation-hardened photodetectors that operate in the range of 5-40 æm. To further extend BIB coverage to 40-350 æm, Ge and GaAs BIB detectors are under development; however, these new detectors face fabrication issues that have …
-
Interferometric experiments towards advanced gravitational wave detectors
… of the order of 10^-18 m in kilometre-scale detectors: the extraordinary diminutiveness of this effect has thus far precluded any direct detection of the phenomenon. Numerous gravitational wave detectors have been built since the 1960s, in the form of both interferometric detectors and …
-
Antimony-based type-II superlattice infrared detectors
… of type-II superlattice infrared detectors. Standard UV-based photolithography was used combined with chemical wet or dry etching techniques in order to fabricate antinomy-based type-II superlattice infrared detectors. Subsequently, Fourier transform infrared spectroscopy and …
Page 1 of 74