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@ARTICLE{Wongrach:190029,
      author       = {Wongrach, K. and Finken, K. H. and Abdullaev, S. S. and
                      Koslowski, R. and Willi, O. and Zeng, L.},
      title        = {{M}easurement of synchrotron radiation from runaway
                      electrons during the {TEXTOR} tokamak disruptions},
      journal      = {Nuclear fusion},
      volume       = {54},
      number       = {4},
      issn         = {1741-4326},
      address      = {Vienna},
      publisher    = {IAEA},
      reportid     = {FZJ-2015-02992},
      pages        = {043011},
      year         = {2014},
      abstract     = {Investigations of runaway electrons (REs) during induced
                      disruptions are performed at the TEXTOR tokamak. The
                      synchrotron radiation generated by REs in the plasma core is
                      detected using an infrared camera. The measurements enable
                      the observation of the structure and dynamics of the runaway
                      beam. In particular, the runaway beam is investigated as a
                      function of the vertical and horizontal control fields. From
                      the plasma current a runaway number of 4.33 × 1016 was
                      calculated. The number of REs with energies exceeding 25 MeV
                      is 6.4 × 1015 according to the synchrotron measurement at
                      the end of the current quench phase. The mean pitch angle of
                      the >25 MeV runaways is found to be 52 mrad which is smaller
                      than in the low density discharge scenario. In addition, the
                      synchrotron measurements show for the first time that a
                      significant number of the high energy REs can survive after
                      the end of the current plateau phase. In order to understand
                      this, runaway orbit calculations have been performed which
                      are in good agreement with the measurements.},
      cin          = {IEK-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {132 - Tokamak physics for ITER and beyond (POF2-132)},
      pid          = {G:(DE-HGF)POF2-132},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000333666700015},
      doi          = {10.1088/0029-5515/54/4/043011},
      url          = {https://juser.fz-juelich.de/record/190029},
}