Experimental Observation of Plasma Wakefield Growth Driven by the Seeded Self-Modulation of a Proton Bunch

Turner, M.Adli, E.Ahuja, A.Apsimon, O.Apsimon, R.Bachmann, A. -M.Marin, M. BarrosBarrientos, D.Batsch, F.Batkiewicz, J.Bauche, J.Olsen, V. K. BerglydBernardini, M.Biskup, B.Boccardi, A.Bogey, T.Bohl, T.Bracco, C.Braunmueller, F.Burger, S.Burt, G.Bustamante, S.Buttenschoen, 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.Huether, M.Ibison, M.Jensen, L.Jolly, S.Keeble, F.Kim, S. -Y.Kraus, F.Lefevre, T.LeGodec, G.Li, Y.Liu, S.Lopes, N.Lotov, K. V.Brun, L. MaricalvaMartyanov, M.Mazzoni, S.Godoy, D. MedinaMinakov, V. A.Mitchell, J.Molendijk, J. C.Mompo, R.Moody, J. T.Moreira, M.Muggli, P.Oez, E.Ozturk, E.Mutin, C.Pasquino, C.Pardons, A.Asmus, F. PenaPepitone, K.Perera, A.Petrenko, A.Pitman, 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.Spitsyn, R. I.Tuev, P. V.Velotti, F.Verra, L.Verzilov, V. A.Vieira, J.Vincke, H.Welsch, C. P.Williamson, B.Wing, M.Woolley, B.Xia, G.2019-06-182019-06-182019-06-182019-02-0810.1103/PhysRevLett.122.054801https://infoscience.epfl.ch/handle/20.500.14299/158124WOS:000458149700008We measure the effects of transverse wakefields driven by a relativistic proton bunch in plasma with densities of 2.1 x 10(14) and 7.7 x 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.Physics, MultidisciplinaryPhysicsawakebeamaccelerationinstabilityelectronsExperimental Observation of Plasma Wakefield Growth Driven by the Seeded Self-Modulation of a Proton Bunchtext::journal::journal article::research article