= Publications 2021 =

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 * **[wiki:Communication/Publications/2021/GL_Beam_Experiment Anomalous Beam Transport Through Gabor (Plasma) Lens Prototype]**; T. Nonnenmacher ''et al.'' \\
   DOI:  ;   
   [https://ccap.hep.ph.ic.ac.uk/trac/attachment/wiki/Communication/Notes/CCAP-TN-ACCL-06.pdf Preprint], [https://arxiv.org/abs/2104.05637 arXiv:2104.05637] \\

   '''Abstract'''::
   >''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.''\\

   '''Figures:'''::
   
||[raw-attachment:LensDiagram_v1.png Fig. 1]||[raw-attachment:Capture.png Fig. 2]||[raw-attachment:stage1overview.pdf Fig. 3]||[raw-attachment:optics.pdf Fig. 4]||[raw-attachment:EndStationPhaseSpace.pdf Fig. 5]||[raw-attachment:injmatch0f.pdf Fig. 6]||[raw-attachment:LhARA_Ring_Stage2.pdf Fig. 7]||[raw-attachment:FFAFigs.pdf Fig. 8]||[raw-attachment:invitro_madxvsbdsim_40mev_beta_fix.png Fig. 9a]||[raw-attachment:invitro_madxvsbdsim_127p4mev_beta_fix.png Fig. 9b]||[raw-attachment:BDSImvsMADX_invivo.pdf Fig. 10]||[raw-attachment:s1EndStation_mono_annot.png Fig. 11] 


   '''[wiki:Communication/Publications/2021/GL_Beam_Experiment Details]'''::
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