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Conception et réalisation d'un émittancemètre 4D

Abstract : The emittance is an important characteristic of propagating charged particle beams. It characterizes the spatial and angular distribution of particles. Measuring four-dimensional (xx'yy') emittance would improve knowledge of beam dynamics and the prediction of the beam behavior and transport.The goal of the EMIT4D project is to design and realize an interceptive diagnostic to measure the four-dimensional emittance of low to medium energy, high current proton beams. The innovative nature of this project lies in both its design and its functions. This type of four-dimensional intense beam diagnostics does not exist on the market and the focus has been on the accuracy and versatility of the system. It can be used on many protons injectors to measure four-dimensional emittance with high resolution.The design of this innovative instrument is based on theoretical studies and R&D in many fields such as mechanics, precision optics, cooling and material selection, scintillator and camera performance selection and analysis, development of a control-command program and a data processing program, the implementation of the diagnostics and the comparison with other emittancemeters. A functional prototype has been realized. For the functional validation, the prototype has been tested at its energy limits on the injectors of FAIR and IPHI beams.
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Aurore Dumancic. Conception et réalisation d'un émittancemètre 4D. Physique des accélérateurs [physics.acc-ph]. Université Paris-Saclay, 2019. Français. ⟨NNT : 2019SACLS315⟩. ⟨tel-02506617⟩

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