Experimental Study of Wakefields Driven by a Self-Modulating Proton Bunch in Plasma

M. Turner; P. Muggli; the AWAKE Collaboration

Experimental Study of Wakefields Driven by a Self-Modulating Proton Bunch in Plasma

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arxiv 2005.05277 v2 pith:Y4BMTBXX submitted 2020-05-11 physics.acc-ph physics.plasm-ph

M. Turner , P. Muggli , the AWAKE Collaboration This is my paper

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keywords wakefieldsbunchplasmaprotonamplitudedrivenlongitudinalself-modulation

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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).

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Numerical investigations of heavy ion driven plasma wakefield acceleration
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Heavy-ion beams, especially a 0.1 mm bismuth bunch at HIAF-like parameters, can excite multi-GV/m plasma wakefields and accelerate electrons to hundreds of MeV in meter-scale plasmas, according to LCODE simulations.

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