Experimental study of wakefields driven by a self-modulating proton bunch in plasma

Experimental study of wakefields driven by a self-modulating proton bunch in plasma

We study experimentally the longitudinal and transverse wakefields driven by a highly relativistic proton bunch during self-modulation in plasma. We show that the wakefields’ growth and amplitude increase with increasing seed amplitude as well as with the proton bunch charge in the plasma. We study...

Description complète

Détails bibliographiques
Auteurs principaux: Turner, M, Muggli, P, Adli, E, Agnello, R, Aladi, M, Andrebe, Y, Apsimon, O, Apsimon, R, Bachmann, A-M, Baistrukov, MA, Batsch, F, Bergamaschi, M, Blanchard, P, Burrows, PN, Buttenschoen, B, Caldwell, A, Chappell, J, Chevallay, E, Chung, M, Cooke, DA, Damerau, H, Davut, C, Demeter, G, Deubner, LH, Dexter, A, Djotyan, GP, Doebert, S, Farmer, J, Fasoli, A, Fedosseev, VN, Fiorito, R, Fonseca, RA, Friebel, F, Furno, I, Garolfi, L, Gessner, S, Goddard, B, Gorgisyan, I, Gorn, AA, Granados, E, Granetzny, M, Grulke, O, Gschwendtner, E, Hafych, V, Hartin, A, Helm, A, Henderson, JR, Howling, A, Huether, M, Jacquier, R
Format: Journal article
Langue:English
Publié: American Physical Society 2020
Description
Résumé:We study experimentally the longitudinal and transverse wakefields driven by a highly relativistic proton bunch during self-modulation in plasma. We show that the wakefields’ growth and amplitude increase with increasing seed amplitude as well as with the proton bunch charge in the plasma. We study transverse wakefields using the maximum radius of the proton bunch distribution measured on a screen downstream from the plasma. We study longitudinal wakefields by externally injecting electrons and measuring their final energy. Measurements agree with trends predicted by theory and numerical simulations and validate our understanding of the development of self-modulation. Experiments were performed in the context of the Advanced Wakefield Experiment (AWAKE).

Documents similaires