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 8 of 8 for “"high energy physics experiments"”.
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Development of a CO2 Cooling Test Facility from the Vertex Locator Thermal Control System
… at the European Organisation for Nuclear Physics (CERN). This type of cooling has become increasingly common in high-energy physics experiments, making their design and testing increasingly more important. The Detector Technologies (DT) group chose to reuse the hard ware from the VTCS …
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Quark and gluon jet discrimination by neutral networks
As the energy scales of high energy physics experiments increase, the amount of data which is available becomes difficult to manage. A method that can increase the signal to background ratio would be a clear advantage. The focus of the study reported here is on increasing the light quark jet signal …
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An experimental device for critical surface characterization of YBCO tape superconductors
… for YBCO superconductors is very attractive for high current density, high magnetic field applications, such as nuclear fusion reactors and high energy physics experiments. Industrial scale assembling methods have been proposed, and cable samples have been tested at 77 K and 4.2 K. A new …
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Measuring Hanbury Brown-Twiss correlations of pions in high-energy nucleus-nucleus collisions
… identical pions from the collision debris of a high-energy collision between two heavy nuclei. The basic ingredients of HBT correlations are: the exchange symmetry ( antisymmetry) of the wave function for identical bosons ( fermions) at the detectors, single-particle state noise, and wave …
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Analysis of 3D silicon pixel vertex detector damage effects due to radiation levels present in the LHC at CERN
In high energy physics experiments, very high precision tracking of charged particles is needed. Solid state detectors achieve the high precision necessary to provide track and vertex reconstruction of the particles that traverse them, but tracking performance begins to deteriorate at fluxes of …
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Convolutional neural networks and photonic crystals for particle identification at high energy collider experiments
… as an effective way to identify particles in high energy physics experiments. Future increases in collision rate and luminosity make limitations of both the particle identification (PID) algorithm and the Cherenkov radiators apparent. These two challenges are addressed in this thesis. In the …
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Effects of ion irradiation on 4H- SiC p-n junction
… that for its properties such as the high hardness, the temperature stability, the chemical inertness and the high thermal conductivity is a promising material for devices operating in hostile environment such as radiation rich and high temperature. Ion irradiation affects the …
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Search for exotic Higgs boson decays to four leptons with the ATLAS detector
… of $139\text{ fb}^{-1}$ and a center of mass energy $\sqrt{s}=13\text{ TeV}$. No significant excess has been observed. Therefore, this dissertation summarizes the $95\%$ confidence-level upper limits of the branching ratio of exotic Higgs decays to a pair of beyond-the-Standard-Model light …