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

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Turner, M, Adli, E, Ahuja, A, Apsimon, O ORCID: 0000-0002-5410-7706, Apsimon, R, Bachmann, A-M, Marin, M Barros, Barrientos, D, Batsch, F, Batkiewicz, J et al (show 103 more authors) , Bauche, J, Olsen, VK Berglyd, Bernardini, 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, LH, Dexter, A, Doebert, S, Farmer, J, Fedosseev, VN, Fior, G, Fiorito, R, Fonseca, RA, Friebel, F, Garolfi, L, Gessner, S, Gorgisyan, I, Gorn, AA, Granados, E, Grulke, O, Gschwendtner, E, Guerrero, A, Hansen, J, Helm, A, Henderson, JR, 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, KV, Brun, L Maricalva, Martyanov, M, Mazzoni, S, Godoy, D Medina, Minakov, VA, Mitchell, J, Molendijk, JC, Mompo, R, Moody, JT, Moreira, M, Muggli, P, Oez, E, Ozturk, E, Mutin, C, Pasquino, C, Pardons, A, Asmus, F Pena, Pepitone, K, Perera, A, Petrenko, A, Pitman, S, Plyushchev, G, Pukhov, A, Rey, S, Rieger, K, Ruhl, H, Schmidt, JS, Shalimova, IA, Shaposhnikova, E, Sherwood, P, Silva, LO, Soby, L, Sosedkin, AP, Speroni, R, Spitsyn, RI, Tuev, PV, Velotti, F, Verra, L, Verzilov, VA, Vieira, J, Vincke, H, Welsch, CP ORCID: 0000-0001-7085-0973, Williamson, B, Wing, M, Woolley, B, Xia, G and Collaboration, AWAKE (2019) Experimental Observation of Plasma Wakefield Growth Driven by the Seeded Self-Modulation of a Proton Bunch. PHYSICAL REVIEW LETTERS, 122 (5). 054801-.

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	AWAKE Collaboration
Depositing User:	Symplectic Admin
Date Deposited:	25 Feb 2019 10:04
Last Modified:	19 Jan 2023 01:01
DOI:	10.1103/PhysRevLett.122.054801
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3033339