% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Wu:888234,
      author       = {Wu, Yitong and Ji, Liangliang and Geng, Xuesong and Thomas,
                      Johannes and Büscher, Markus and Pukhov, Alexander and
                      Hützen, Anna and Zhang, Lingang and Shen, Baifei and Li,
                      Ruxin},
      title        = {{S}pin {F}ilter for {P}olarized {E}lectron {A}cceleration
                      in {P}lasma {W}akefields},
      journal      = {Physical review applied},
      volume       = {13},
      number       = {4},
      issn         = {2331-7019},
      address      = {College Park, Md. [u.a.]},
      publisher    = {American Physical Society},
      reportid     = {FZJ-2020-04783},
      pages        = {044064},
      year         = {2020},
      abstract     = {We propose a filter method to generate electron beams of
                      high polarization from bubble and blow-out wakefield
                      accelerators. The mechanism is based on the idea of
                      identifying all electron-beam subsets with low polarization
                      and filtering them out with an X-shaped slit placed
                      immediately behind the plasma accelerator. To find these
                      subsets we investigate the dependence between the initial
                      azimuthal angle and the spin of single electrons during the
                      trapping process. This dependence shows that transverse
                      electron spins preserve their orientation during injection
                      if they are initially aligned parallel or antiparallel to
                      the local magnetic field. We derive a precise correlation of
                      the local beam polarization as a function of the coordinate
                      and the electron phase angle. Three-dimensional
                      particle-in-cell simulations, incorporating classical spin
                      dynamics, show that the beam polarization can be increased
                      from $35\%$ to about $80\%$ after spin filtering. The
                      injected flux is strongly restricted to preserve the beam
                      polarization; for example, less than 1 kA in Wen et al.
                      [Phys. Rev. Lett. 122, 214801 (2019)]. This limitation is
                      removed by use of the proposed filter mechanism. The
                      robustness of the method is discussed in terms of drive-beam
                      fluctuations, jitters, the thickness of the filter, and the
                      initial temperature. This idea marks an efficient and simple
                      strategy to generate energetic polarized electron beams on
                      the basis of wakefield acceleration.},
      cin          = {PGI-6},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-6-20110106},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000528534700004},
      doi          = {10.1103/PhysRevApplied.13.044064},
      url          = {https://juser.fz-juelich.de/record/888234},
}