Beam dynamics studies are performed in the context of a C-Band hybrid photo-injector project developed by a collaboration between UCLA/Sapienza/INFN-LNF/RadiaBeam [1, 2]. These studies aim to explain beam behaviour through the beam-slice evolution, using analytical and numerical approaches. An understanding of the emittance oscillations is obtained starting from the slice analysis, which allows correlation of the position of the emittance minima with the slope of the slices in the transverse phase space (TPS). At the end, a significant reduction in the normalized emittance is obtained by varying the transverse shape of the beam while assuming a longitudinal Gaussian distribution. Indeed, the emittance growth due to nonlinear space-charge fields has been found to occur immediately after moment of the beam emission from the cathode, giving insight into the optimum laser profile needed for minimizing the emittance.
Space charge analysis for low energy photoinjector / Carillo, Martina; Behtouei, Mostafa; Bosco, Fabio; Camacho, Obed; Chiadroni, Enrica; Faillace, Luigi; Ficcadenti, Luca; Fukasawa, Atsushi; Giuliano, Lucia; Migliorati, Mauro; Mostacci, Andrea; Palumbo, Luigi; Rosenzweig, JAMES BENJAMIN; Spataro, Bruno. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - (2022). (Intervento presentato al convegno International Particle Accelerator Conference 2022 tenutosi a Bangkok, Thailand) [10.18429/jacow-ipac2022-wepoms017].
Space charge analysis for low energy photoinjector
Martina Carillo;Mostafa Behtouei;Fabio Bosco;Enrica Chiadroni;Luigi Faillace;Luca Ficcadenti;Lucia Giuliano;Mauro Migliorati;Andrea Mostacci;Luigi Palumbo;James Rosenzweig;Bruno Spataro
2022
Abstract
Beam dynamics studies are performed in the context of a C-Band hybrid photo-injector project developed by a collaboration between UCLA/Sapienza/INFN-LNF/RadiaBeam [1, 2]. These studies aim to explain beam behaviour through the beam-slice evolution, using analytical and numerical approaches. An understanding of the emittance oscillations is obtained starting from the slice analysis, which allows correlation of the position of the emittance minima with the slope of the slices in the transverse phase space (TPS). At the end, a significant reduction in the normalized emittance is obtained by varying the transverse shape of the beam while assuming a longitudinal Gaussian distribution. Indeed, the emittance growth due to nonlinear space-charge fields has been found to occur immediately after moment of the beam emission from the cathode, giving insight into the optimum laser profile needed for minimizing the emittance.File | Dimensione | Formato | |
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