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.
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Showing 1 to 20 of 36 for “"Radiation detector"”.
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Calibrating and recommissioning the ALICE transition radiation detector
… primary parts. Firstly, in preparation for new detector control systems at CERN, core software for the ALICE Transition Radiation Detector was updated and migrated to a new version control system. Pipelines were also developed to automatically deploy packages to remote repositories. Secondly, …
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A transition radiation detector and gas supply system for AMS
… is planned for this signal. A TRD (Transition Radiation Detector) has been designed to achieve these physics goals. Besides the radiator, the TRD is a gaseous detector that needs a gas system providing signal stability to 3%. The design, and construction of the TRD gas supply system is …
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Designing an event display for the Transition Radiation Detector in ALICE
… for an event display focused on the Transition Radiation Detector (TRD) within A Large Ion Collider Experiment (ALICE) at the European Organisation for Nuclear Research (CERN). Reviews of the fields of particle physics and visualisation are presented to motivate formally designing this display …
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Common Mode Effect of the ALICE Transition Radiation Detector - Baseline Shift
The Transition Radiation Detector is a sub-detector of the ALICE experiment that is used primarily as an electron detector and a trigger mechanism. The TRD currently has 521 individual chambers distributed over 18 super modules. Each chamber houses a radiator, a drift region and a multi-wire …
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Local Signal Processing of the ALICE Transition Radiation Detector at LHC (CERN)
The transition radiation detector of the heavy ion experiment ALICE at LHC (CERN) integrates parts of the data acquisition and trigger system. Therefore, a multi chip module has been developped which incorporates two microchips. Detector signals are preamplified and shaped (Preamplifier and Shaper …
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Experimental Design for Estimating Electro-Thermophysical Properties of a Thermopile Thermal Radiation Detector
… turn, rely on accurate measurements of the Earth Radiation Budget (ERB) in order to quantify changes in the atmosphere. The Thermal Radiation Group (TRG), a laboratory in the Department of Mechanical Engineering at Virginia Polytechnic Institute and State University, has been at the edge of …
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The growth and characterisation of zinc telluride for use as a nuclear radiation detector
… material suitable for fabrication into nuclear radiation detectors various dopants have been added during the Bridgman growth process to try to compenate the shallow acceptor defects that are responsible for the as grown electrical conductivity. Van der Pauw resistivity measurements an samples …
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Dynamic Electrothermal Model of a Sputtered Thermopile Thermal Radiation Detector for Earth Radiation Budget Applications
… through a Cassegrain telescope. The Thermal Radiation Group, a laboratory in the Department of Mechanical Engineering at Virginia Polytechnic Institute and State University, is currently studying a new sensor concept to replace the current bolometer: a thermopile thermal radiation detector. …
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Optical Analysis of a Linear-Array Thermal Radiation Detector for Geostationary Earth Radiation Budget Applications
The Thermal Radiation Group, a laboratory in the Department of Mechanical Engineering at Virginia Polytechnic Institute and State University, is currently working to develop a new technology for thermal radiation detectors. The Group is also studying the viability of replacing current Earth …
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Applying Novel Material Characterization Techniques using Ultrafast Laser Excitation and Neutron Diffraction in Radiation Detector Crystals
… in the growth and performance of crystals for radiation detection, I develop and employ several material characterization techniques not previously implemented in the field. Two main, interconnected issues are addressed: the cracking of certain crystals during the growth process and spatial …
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Performance of a photon conversion trigger in proton-proton collisions using the ALICE Transition Radiation Detector
The study aimed to find the yield of conversion photons in pp √ s = 13 TeV with less uncertainty for high transverse momentum photons through the TRD in ALICE (necessary for π 0 and η cross-sections). The calculation of the yield of conversion photons were successful in replicating their yield from …
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Machine learning for particle identification & deep generative models towards fast simulations for the Alice Transition Radiation Detector at CERN
… particle identification and high energy physics detector simulations are pertinent to research avenues pursued by physicists working with the ALICE (A Large Ion Collider Experiment) Transition Radiation Detector (TRD), within the Large Hadron Collider (LHC) at CERN (The European Organization for …
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Development of the Readout Chamber of the ALICE Transition Radiation Detector and Evaluation of its Physics Performance in the Quarkonium Sector
In the central barrel of the ALICE detector, resonances are proved, among other channels,through their electronic decays. Doing so, the abundantly produced pions make the electrons identification complicated. Therefore the adoption of an electron-pion separator, like the Transition Radiation …
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Second-Surface Mirror Effects in Thin-Film Absorber Layers
The Thermal Radiation Group at Virginia Polytechnic Institute and State University has been developing analytical and numerical heat transfer models for NASA's Langley Research Center for more than 25 years. Recent versions of these models are being used in the design of the next-generation thermal …
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Machine learning approaches towards tuning ALICE TRD simulations
… data pertaining to the ALICE Transition Radiation Detector is carried out as a motivation to tune the necessary parameters in the ALICE Online-Offline simulation software (O2 ). After such exploration a single parameter namely the Xe gas gain is subjected to modification. A machine …
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Heat Transfer Issues in Thin-Film Thermal Radiation Detectors
The Thermal Radiation Group at Virginia Polytechnic Institute and State University has been working closely with scientists and engineers at NASA's Langley Research Center to develop accurate analytical and numerical models suitable for designing next-generation thin-film thermal radiation …
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Autonomous Aerial Localization of Radioactive Point Sources via Recursive Bayesian Estimation and Contour Analysis
… recursive Bayesian estimator and a novel radiation contour analysis method—are presented to estimate the position of radioactive sources using simple gross gamma ray event count data from a nondirectional radiation detector. The latter procedure also correctly estimates the number of …
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Simulating Properties of Scintillating Integrated Fibers as Conformal Radiation Detectors
… create fibers with novel capabilities, including radiation detection when combined with elements of scintillating fiber detectors. By sensing and processing scintillation light within the fiber itself, integrated fibers could be woven into a fabric to make a rugged, conformal radiation detector. …
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