Measurement of the inelastic pp cross-sections using the LHCb experiment and development of a new vertex detector
In this thesis, measurements of the inelastic cross-sections of proton-proton collisions at centre-of-mass energies of \sqrt{s} = 5 TeV and \sqrt{s} = 13 TeV with the LHCb detector are presented. The cross-section measurements are performed using pp collisions with at least one prompt long-lived cha...
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| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universidad de Santiago de Compostela (USC) |
| Repositorio: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
| Idioma: | inglés |
| OAI Identifier: | oai:minerva.usc.gal:10347/15425 |
| Acceso en línea: | http://hdl.handle.net/10347/15425 |
| Access Level: | acceso abierto |
| Palabra clave: | Materias::Investigación::22 Física::2214 Unidades y constantes::221402 Metrología Materias::Investigación::22 Física::2208 Nucleónica::220805 Aceleradores de partículas Materias::Investigación::22 Física::2208 Nucleónica::220806 Detectores de partículas Materias::Investigación::22 Física::2208 Nucleónica::220807 Física de partículas |
| Sumario: | In this thesis, measurements of the inelastic cross-sections of proton-proton collisions at centre-of-mass energies of \sqrt{s} = 5 TeV and \sqrt{s} = 13 TeV with the LHCb detector are presented. The cross-section measurements are performed using pp collisions with at least one prompt long-lived charged particle in the pseudorapidity range 2 < \eta < 5 and momentum p > 2 GeV/c. The extrapolation to the full phase-space is also performed using the official LHCb simulation generated using the Pythia 8 event generator. During the second long shut down of the LHC (2018-2019), the LHCb experiment will be upgraded, and all its subdetectors will be modified. Specifically, the Vertex Detector (VELO) will move from silicon strips to silicon pixels. The new readout ASIC will be the VeloPix, a successor of the Medipix family of ASICs. The Single Event Upset robustness of the Medipix3 chip, an ancestor of the VeloPix, is studied in order to evaluated the radiation hardness of the VeloPix. Different beam tests at a cyclotron facility were designed and performed with the subsequent data analysis. Using the Timepix3, a successor of the Medipix3, a telescope was developed. This telescope was designed to test the sensors and readout electronics prototypes for the VELO upgrade. The design and the performance of this telescope under very high particle incident rates are also presented. |
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