All-optical structuring of laser-driven proton beam profiles

Lieselotte Obst-Huebl (), Tim Ziegler, Florian-Emanuel Brack, João Branco, Michael Bussmann, Thomas E. Cowan, Chandra B. Curry, Frederico Fiuza, Marco Garten, Maxence Gauthier, Sebastian Göde, Siegfried H. Glenzer, Axel Huebl, Arie Irman, Jongjin B. Kim, Thomas Kluge, Stephan D. Kraft, Florian Kroll, Josefine Metzkes-Ng, Richard Pausch, Irene Prencipe, Martin Rehwald, Christian Roedel, Hans-Peter Schlenvoigt, Ulrich Schramm and Karl Zeil
Additional contact information
Lieselotte Obst-Huebl: Institute of Radiation Physics
Tim Ziegler: Institute of Radiation Physics
Florian-Emanuel Brack: Institute of Radiation Physics
João Branco: Institute of Radiation Physics
Michael Bussmann: Institute of Radiation Physics
Thomas E. Cowan: Institute of Radiation Physics
Chandra B. Curry: High Energy Density Science Division, SLAC National Accelerator Laboratory
Frederico Fiuza: High Energy Density Science Division, SLAC National Accelerator Laboratory
Marco Garten: Institute of Radiation Physics
Maxence Gauthier: High Energy Density Science Division, SLAC National Accelerator Laboratory
Sebastian Göde: European XFEL GmbH
Siegfried H. Glenzer: High Energy Density Science Division, SLAC National Accelerator Laboratory
Axel Huebl: Institute of Radiation Physics
Arie Irman: Institute of Radiation Physics
Jongjin B. Kim: High Energy Density Science Division, SLAC National Accelerator Laboratory
Thomas Kluge: Institute of Radiation Physics
Stephan D. Kraft: Institute of Radiation Physics
Florian Kroll: Institute of Radiation Physics
Josefine Metzkes-Ng: Institute of Radiation Physics
Richard Pausch: Institute of Radiation Physics
Irene Prencipe: Institute of Radiation Physics
Martin Rehwald: Institute of Radiation Physics
Christian Roedel: Helmholtz Institute Jena
Hans-Peter Schlenvoigt: Institute of Radiation Physics
Ulrich Schramm: Institute of Radiation Physics
Karl Zeil: Institute of Radiation Physics

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract Extreme field gradients intrinsic to relativistic laser-interactions with thin solid targets enable compact MeV proton accelerators with unique bunch characteristics. Yet, direct control of the proton beam profile is usually not possible. Here we present a readily applicable all-optical approach to imprint detailed spatial information from the driving laser pulse onto the proton bunch. In a series of experiments, counter-intuitively, the spatial profile of the energetic proton bunch was found to exhibit identical structures as the fraction of the laser pulse passing around a target of limited size. Such information transfer between the laser pulse and the naturally delayed proton bunch is attributed to the formation of quasi-static electric fields in the beam path by ionization of residual gas. Essentially acting as a programmable memory, these fields provide access to a higher level of proton beam manipulation.

Date: 2018
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DOI: 10.1038/s41467-018-07756-z

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