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What is Plasma Wakefield Acceleration?

Novel particle acceleration technique. Short beam enters plasma. Free e- pulled towards beam. e- reach beam, and overshoot. What is Plasma Wakefield Acceleration?. Ion region is left behind beam. e- pulled back towards axis by ions. +. +. -. -. +. -. +. +.

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What is Plasma Wakefield Acceleration?

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  1. Novel particle acceleration technique Short beam enters plasma Free e- pulled towards beam e- reach beam, and overshoot What is Plasma Wakefield Acceleration? Ion region is left behind beam e- pulled back towards axis by ions + + - - + - + + ‘bubble’ structure formed Short proton beam + Proton Beam High electric fields created • Can also drive wakefields with: • Electrons • Photons • Positrons • Muons • (in principle) Neutral plasma Many ‘bubbles’ trail beam Inject e- into bubble to accelerate them Here is a simulation of the cartoon (electric field plotted) The side view shows how the ‘bubbles’ Get nosier further behind the beam Circled is the electric field of the proton beam driving the wakefield

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