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

, AWAKE Collaboration (2020) Experimental study of wakefields driven by a self-modulating proton bunch in plasma. Physical Review Accelerators and Beams, 23 (8). ISSN 2469-9888

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Abstract

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). © 2020 authors.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review Accelerators and Beams
ID Code:
148240
Deposited By:
Deposited On:
15 Oct 2020 10:55
Refereed?:
Yes
Published?:
Published
Last Modified:
25 Oct 2020 07:25