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Fast Transverse Beam Instability Caused by Electron Cloud Trapped in Combined Function Magnets / / by Sergey A. Antipov



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Autore: Antipov Sergey A Visualizza persona
Titolo: Fast Transverse Beam Instability Caused by Electron Cloud Trapped in Combined Function Magnets / / by Sergey A. Antipov Visualizza cluster
Pubblicazione: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2018
Edizione: 1st ed. 2018.
Descrizione fisica: 1 online resource (88 pages)
Disciplina: 530.446
539.73
Soggetto topico: Particle acceleration
Magnetism
Magnetic materials
Superconductivity
Superconductors
Physics
Particle Acceleration and Detection, Beam Physics
Magnetism, Magnetic Materials
Strongly Correlated Systems, Superconductivity
Numerical and Computational Physics, Simulation
Nota di contenuto: Chapter1. Electron Cloud in Particle Accelerators -- Chapter2. Beam Dynamics Measurements of the Fast Instability -- Chapter3. Microwave Measurement of the Cloud Density -- Chapter4. Numerical Simulation -- Chapter5. Analytical Model of the Electron Cloud Instability -- Chapter6. Conclusion.
Sommario/riassunto: This thesis presents profound insights into the origins and dynamics of beam instabilities using both experimental observations and numerical simulations. When the Recycler Ring, a high-intensity proton beam accelerator at Fermi National Accelerator Laboratory, was commissioned, it became evident that the Recycler beam experiences a very fast instability of unknown nature. This instability was so fast that the existing dampers were ineffective at suppressing it. The nature of this phenomenon, alongside several other poorly understood features of the beam, became one of the biggest puzzles in the accelerator community. The author investigated a hypothesis that the instability arises from an interaction with a dense cloud of electrons accompanying the proton beam. He studied the phenomena experimentally by comparing the dynamics of stable and unstable beams, by numerically simulating the build-up of the electron cloud and its interaction with the beam, and by constructing an analytical model of an electron cloud-driven instability with the electrons trapped in combined-function dipole magnets. He has devised a method to stabilize the beam by a clearing bunch, which conclusively revealed that the instability is caused by the electron cloud, trapped in a strong magnetic field. Finally, he conducted measurements of the microwave propagation through a single dipole magnet. These measurements have confirmed the presence of the electron cloud in combined-function magnets.
Titolo autorizzato: Fast Transverse Beam Instability Caused by Electron Cloud Trapped in Combined Function Magnets  Visualizza cluster
ISBN: 3-030-02408-3
Formato: Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione: Inglese
Record Nr.: 9910300541003321
Lo trovi qui: Univ. Federico II
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Serie: Springer Theses, Recognizing Outstanding Ph.D. Research, . 2190-5053