Experimental observation of plasma wakefield growth driven by the seeded self-modulation of a proton bunch

• Autor(a) principal: Turner, M.
• Data de Publicação: 2019
• Outros Autores: Adli, E., Ahuja, A., Apsimon, O., Apsimon, R., Bachmann, A. -M., Barros, M. M., Barrientos, D., Batsch, F., Batkiewicz, J., Bauche, J., Spitsyn, R. I., Tuev, P. V., Velotti, F., Verra, L., Verzilov, V. A., Vieira, J., Vincke, H., Welsch, C. P., Williamson, B., Wing, M., V. K. Berglyd Olsen, Woolley, B., Xia, G., Bernardini, M., Biskup, B., Boccardi, A., Bogey, T., Bohl, T., Bracco, C., Braunmuller, F., Burger, S., Burt G, S Bustamante, Buttenschön, B., Caldwell, A., Cascella, M., Chappell, J., Chevallay, E., Chung, M., Cooke, D., Damerau, H., Deacon, L., Deubner, L. H., Dexter, A., Doebert, S., Farmer, J., Fedosseev, V. N., Fior, G., Fiorito, R., Fonseca, R. A., Friebel, F., Garolfi, L., Gessner, S., Gorgisyan, I., Gorn, A. A., Granados, E., Grulke, O., Gschwendtner, E., Guerrero, A., Hansen, J., Helm, A., Henderson, J. R., Hessler, C., Hofle, W., Hüther, M., Ibison, M., Jensen, L., Jolly, S. W., Keeble, F., Kim, S. -Y., Krausz, F., Lefevre, T., LeGodec, G., Li, Y., Liu, S., Lopes, N. C., Lotov, K. V., Brun, L. M., Martyanov, M., Mazzoni, S., Godoy, D. M., Minakov, V. A., Mitchell, J., Molendijk, J. C., Mompo, R., Moody, J. T., Moreira, M. T., Muggli, P., Öz, E., Ozturk, E., Mutin, C., Pasquino, C., Pardons, A., Asmus, F. P., Pepitone, K., Perera, A., Petrenko, A., Pitmann, S., Plyushchev, G., Pukhov, A., Rey, S., Rieger, K., Ruhl, H., Schmidt, J. S., Shalimova, I. A., Shaposhnikova, E., Sherwood, P., Silva, L. O., Soby, L., Sosedkin, A. P., Speroni, R.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10071/17696

We measure the effects of transverse wakefields driven by a relativistic proton bunch in plasma with densities of 2.1×10^14 and 7.7×10^14 electrons/cm^3. We show that these wakefields periodically defocus the proton bunch itself, consistently with the development of the seeded self-modulation process. We show that the defocusing increases both along the bunch and along the plasma by using time resolved and time-integrated measurements of the proton bunch transverse distribution. We evaluate the transverse wakefield amplitudes and show that they exceed their seed value (<15 MV/m) and reach over 300 MV/m. All these results confirm the development of the seeded self-modulation process, a necessary condition for external injection of low energy and acceleration of electrons to multi-GeV energy levels.