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arXiv · 2101.10148

On the robustness of spin polarization for magnetic vortex accelerated proton bunches in density down-ramps

Lars Reichwein·Anna Hützen·Markus Büscher·Alexander Pukhov
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Abstract

We investigate the effect of density down-ramps on the acceleration of ions via Magnetic Vortex Acceleration (MVA) in a near-critical density gas target by means of particle-in-cell simulations. The spin-polarization of the accelerated protons is robust for a variety of ramp lengths at around 80%. Significant increase of the ramp length is accompanied by collimation of low-polarization protons into the final beam and large transverse spread of the highly polarized protons with respect to the direction of laser propagation.

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Lars Reichwein, Anna Hützen, Markus Büscher, Alexander Pukhov. 2021-01-25. On the robustness of spin polarization for magnetic vortex accelerated proton bunches in density down-ramps. https://doi.org/10.1088/1361-6587/ac0614

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