4 th EAAC Workshop Hotel Hermitage La Biodola

4 th EAAC Workshop, Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy All-optical structuring of laser-driven proton beam profiles 21. 09. 2019 J. Metzkes-Ng 1, C. Bernert 1, 2, F. -E. Brack 1, 2, J. Branco 1, 2, M. Bussmann 1, T. E. Cowan 1, 2, C. B. Curry 4, L. Gaus 1, 2, F. Fiuza 4, M. Garten 1, 2, M. Gauthier 4, S. H. Glenzer 4, S. Göde 5, A. Huebl 7, A. Irman 1, J. B. Kim 4, T. Kluge 1, S. Kraft 1, F. Kroll 1, M. J. Mac. Donald 4, R. Mishra 4, L. Obst-Huebl 7, R. Pausch 1, 2, I. Prencipe 1, M. Rehwald 1, 2, C. Rödel 6, C. Ruyer 4, H. -P. Schlenvoigt 1, P. Sommer 1, 2, C. Schoenwalder 4, W. Schumaker 4, T. Ziegler 1, 2, U. Schramm 1, 2, and K. Zeil 1 1) Helmholtz-Zentrum Dresden—Rossendorf, Dresden, Germany , 2) Technische Universität Dresden, Germany, 4) SLAC National Accelerator Laboratory, Menlo Park, USA , 5) European XFEL, Schenefeld, Germany, 6) Friedrich-Schiller-Universität Jena, Germany, 7) Lawrence Berkeley National Laboratory, Berkeley, USA Josefine Metzkes-Ng j. metzkes-ng@hzdr. de www. hzdr. de HZDR Mitglied der Helmholtz-Gemeinschaft

Laser-driven proton acceleration for radiobiology laser source target & acceleration beam preparation application Draco PW proton beamline @ Draco Penelope Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 2 Mitglied der Helmholtz-Gemeinschaft

High power lasers for particle acceleration Draco – accelerator research (e-/p+) & application • commercial Ti: Sapphire laser dual-beam system • 150 TW (4 J in 30 fs routinely on target) • PW (30 J on target in 30 fs) PENELOPE – prototype driver for radiobiology • energy-efficient 150 J / 150 fs laser @ 1 Hz • lighthouse project for proton/ion acceleration within ATHENA • Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 3 beamline for radiobiological studies Mitglied der Helmholtz-Gemeinschaft

Target requirements laser source target & acceleration n ~ �� for advanced schemes �� simulatability diagnostics access Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 4 beam preparation application repetition rate debris mitigation species selectivity adaptability to laser Mitglied der Helmholtz-Gemeinschaft

Laser-driven protons from solid hydrogen target & acceleration 2 µm 20 µm Courtesy of Uwe Hübner (IPHT Jena) Opt ical pro be n ~ �� for advanced schemes �� simulatability diagnostics access repetition rate debris mitigation species selectivity adaptability to laser J. Kim, S. Göde and S. Glenzer, Rev. Sci. Instr. (2016) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 5 Mitglied der Helmholtz-Gemeinschaft

Laser-driven protons from solid hydrogen target & acceleration Opt ical pro be n ~ �� for advanced schemes �� simulatability diagnostics access repetition rate debris mitigation species selectivity adaptability to laser J. Kim, S. Göde and S. Glenzer, Rev. Sci. Instr. (2016) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 6 Mitglied der Helmholtz-Gemeinschaft

Laser-driven protons from solid hydrogen target & acceleration proton source performance • proton distributions as from foil targets L. Obst et al. : Sci. Rep. (2017) • acceleration of protons up to ~80 Me. V @ Draco PW -5 to +5 ps Opt ical pro be application & technology • repetition rate operation @ 1 Hz M. Gauthier et al: Appl. Phys. Lett. (2017) • dedicated probe laser system T. Ziegler et al. : Plasma Phys. Contr. F. (2018) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 7 Mitglied der Helmholtz-Gemeinschaft

Laser-driven protons from solid hydrogen target & acceleration proton source performance • proton distributions as from foil targets L. Obst et al. : Sci. Rep. (2017) • acceleration of protons up to ~80 Me. V @ Draco PW Opt plasma dynamics ical pro be application & technology • repetition rate operation @ 1 Hz M. Gauthier et al: Appl. Phys. Lett. (2017) • dedicated probe laser system T. Ziegler et al. : Plasma Phys. Contr. F. (2018) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 8 Weibel-like instabilities S. Göde et al. : PRL (2017) all-optical proton beam structuring L. Obst-Huebl et al. : Nature Comm. (2018) Mitglied der Helmholtz-Gemeinschaft

Low contrast – streaming instability bubble-like modulations of proton beam profile ~ 4 cm Weibel-like instability in rear surface plasma 3 D PIC simulation with OSIRIS E-field ~ 4 cm B-field laser ~ µm scale length S. Göde et al. , Phys. Rev. Lett. (2017) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 9 Mitglied der Helmholtz-Gemeinschaft

Low contrast – streaming instability bubble-like modulations of proton beam profile ~ 4 cm Weibel-like instability in rear surface plasma 3 D PIC simulation with OSIRIS proton beam ~ 4 cm B-field TNSA protons are deflected in rear-side field structure laser ~ µm scale length S. Göde et al. , Phys. Rev. Lett. (2017) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 10 Mitglied der Helmholtz-Gemeinschaft

Improved contrast – laser imprints bubble-like modulations of proton beam profile imprint of laser near field features ~ 4 cm jet-axis plasma expansion @ intrinsic contrast Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 11 laser near field plasma mirror enhanced contrast Mitglied der Helmholtz-Gemeinschaft

intensity / W/cm 2 All-optical beam structuring laser focus target no temporal overlap between transmitted laser pulse and proton bunch jet-axis RCF stack features not visible H 2 jet in laser focus transmitted light diagnostic residual gas = memory? initial laser mode L. Obst-Huebl et al. : Nature Comm. (2018) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 12 obstacles Mitglied der Helmholtz-Gemeinschaft

All-optical beam structuring test experiment with metal wire at different target chamber pressures generation of low density plasma cylinders behind laser pulse charge separation leads to quasi-static electric fields of MV/m TNSA protons probe these fields like in radiography L. Obst-Huebl et al. : Nature Comm. (2018) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 13 Mitglied der Helmholtz-Gemeinschaft

All-optical beam structuring PIC simulation of underdense plasma region laser ne = 1014 cm-3 ne = 1012 cm-3 ne = 1014 cm-3 L. Obst-Huebl et al. : Nature Comm. (2018) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 14 Mitglied der Helmholtz-Gemeinschaft

Laser-driven proton acceleration @ Draco PW target & acceleration plasma dynamics Weibel-like instabilities S. Göde et al. : PRL (2017) all-optical proton beam structuring L. Obst-Huebl et al. : Nature Comm. (2018) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 15 Mitglied der Helmholtz-Gemeinschaft

Thank you for your attention! (filamentation of a 100 TW laser beam freely propagating in air) Josefine j. metzkes-ng@hzdr. de www. hzdr. de HZDR Seite. Metzkes-Ng 16 Mitglied der Helmholtz-Gemeinschaft