New experimental techniques for axion searches in the RADES and BabyIAXO experiments
[eng] Initially proposed as part of the solution to the strong CP problem of the Standard Model of particle physics, axions and axion-like particles appear on several Beyond Standard Model extensions. These pseudoscalar pseudo-Nambu-Goldstone bosons could also be the answer to one of the most puzzli...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/221031 |
| Acceso en línea: | https://hdl.handle.net/2445/221031 http://hdl.handle.net/10803/694437 |
| Access Level: | acceso abierto |
| Palabra clave: | Física de partícules Electromagnetisme Radioactivitat Matèria fosca (Astronomia) Particle physics Electromagnetism Radioactivity Dark matter (Astronomy) |
| Sumario: | [eng] Initially proposed as part of the solution to the strong CP problem of the Standard Model of particle physics, axions and axion-like particles appear on several Beyond Standard Model extensions. These pseudoscalar pseudo-Nambu-Goldstone bosons could also be the answer to one of the most puzzling questions on cosmology, the Dark Matter problem. For decades, searches have been performed for finding these elusive particles. The most promising of which deals with the conversion of axions into photons and their observation. Depending on the origin of these axions we can distinguish between two main kind of experiments, haloscopes (for dark matter axions) and helioscopes (for solar axions). In this document we compile three different contributions to axion searches within the same framework that have been inside the scope of the thesis work during the last years. The first comprises the work developed in a proposal that paves the path for haloscope searches at BabyIAXO, in particular a set of 5 meter long cavities are proposed for covering the structures already used at CAST for axion searches. In the second part we expose the characterization and optimization of the radioactive background of the acquisition electronics for the BabyIAXO helioscope. In the last part a general framework for treating multicavity resonators is presented as an extension of the theory developed for the first RADES prototype, based on this idea two new prototypes were designed, manufactured and characterized. |
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