Jun 2 – 7, 2013
La Biodola, Isola d'Elba
Europe/Rome timezone

High-Quality Electron Beams from Ionization-Induced Self-Trapping in the Strong Blow-out Regime of Beam-Driven Plasma Wakes.

Jun 5, 2013, 7:00 PM
Maria Luisa (Hotel Hermitage)

Maria Luisa

Hotel Hermitage

talk WG1+6 WG1+6


Dr Alberto Martinez de la Ossa (DESY)


A new strategy for controlled ionization-induced trapping of electrons in beam-driven plasma wakes is proposed. The method exploits the strong wakefields excited by a longitudinally asymmetric ultra-relativistic electron-beam driver operating in a strong blow-out regime in order to selectively tunnel-ionize and trap electrons from a dopant species of high ionization potential. This work demonstrates the injection mechanism by means of 3D particle-in-cell simulations using the code OSIRIS. In these simulations an electron beam with a triangular current profile propagates through a precreated plasma of density 5x1017 cm-3 and excites strong wakefields. When these wakes cross a thin plasma column of 1000 μm doped with neutral helium, they trigger ionization and trapping of 3.8 pC of electrons in a 700 attoseconds long region of the wakefields phase-space. The trapped electron bunch is subsequently accelerated within a distance of 75.2 mm to energies of up to 4 GeV with a relative energy spread of 1%, normalized transverse emittances of 1 μm and a peak current of 3 kA.

Primary author

Dr Alberto Martinez de la Ossa (DESY)


Dr Christopher Behrens (DESY) Dr Jens Osterhoff (Deutsches Elektronen-Synchrotron DESY) Dr Julia Grebenyuk (DESY) Mr Timon Mehrling (DESY)

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