Changes between Version 4 and Version 5 of Communication/Publications/2021/GL_Beam_Experiment


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Timestamp:
Apr 16, 2021, 8:26:49 AM (3 years ago)
Author:
td1719
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  • Communication/Publications/2021/GL_Beam_Experiment

    v4 v5  
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    55   '''Abstract'''::
    6    >''An electron plasma lens is a cost-effective, compact, strong-focusing element that can ensure efficient capture of low-energy proton and ion beams from laser-driven sources. A Gabor lens prototype was built for high electron density operation at Imperial College London. The parameters of the stable operation regime of the lens and its performance during a beam test with 1.4\,MeV protons are reported here. Narrow pencil beams were imaged on a scintillator screen 67\,cm downstream of the lens. The lens converted the pencil beams into rings that show position-dependent shape and intensity modulation that are dependent on the settings of the lens. Characterisation of the focusing effect suggests that the plasma column exhibited an off-axis rotation similar to the $m=1$ diocotron instability. The association of the instability with the cause of the rings was investigated using particle tracking simulations.''\\
     6   >''An electron plasma lens is a cost-effective, compact, strong-focusing element that can ensure efficient capture of low-energy proton and ion beams from laser-driven sources. A Gabor lens prototype was built for high electron density operation at Imperial College London. The parameters of the stable operation regime of the lens and its performance during a beam test with 1.4 MeV protons are reported here. Narrow pencil beams were imaged on a scintillator screen 67 cm downstream of the lens. The lens converted the pencil beams into rings that show position-dependent shape and intensity modulation that are dependent on the settings of the lens. Characterisation of the focusing effect suggests that the plasma column exhibited an off-axis rotation similar to the ''m=1'' diocotron instability. The association of the instability with the cause of the rings was investigated using particle tracking simulations.''\\
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