% 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”.

@PHDTHESIS{Berglund:300393,
      author       = {Berglund, Gun Zara Mari},
      title        = {{S}pin-{O}rbit {M}aps and {E}lectron {S}pin {D}ynamics for
                      the {L}uminosity {U}pgrade {P}roject at {HERA}},
      school       = {Kungliga Tekniska Hogskolan (KTH)},
      type         = {Dr.},
      reportid     = {PUBDB-2016-02302, DESY-THESIS-2001-044},
      pages        = {134},
      year         = {2001},
      note         = {Kungliga Tekniska Hogskolan (KTH), Diss., 2001},
      abstract     = {HERA is the high energy electron(positron)-proton collider
                      at Deutsches Elekt ronen-Synchrotron (DESY) in Hamburg.
                      Following eight years of successful running, five of which
                      were with a longitudinally spin polarized electron(positron)
                      beam for the HERMES experiment, the rings have now been
                      modified to increase the luminosity by a factor of about
                      five and spin rotators have been installed for the Hl and
                      ZEUS experiments. The modifications involve nonstandard
                      configurations of overlapping magnetic fields and other
                      aspects which have profound implications for the
                      polarization. This thesis addresses the problem of
                      calculating the polarization in the upgraded machine and the
                      measures needed to maintain the polarization. A central
                      topic is the construction of realistic spin-orbit transport
                      maps for the regions of overlapping fields and their
                      implementation in existing software. This is the first time
                      that calculations with such fields have been possible. Using
                      the upgraded software, calculations are presented for the
                      polarization that can be expected in the upgraded machine
                      and an analysis is made of the contributions to
                      depolarization from the various parts of the machine. It is
                      concluded that about 50 $\%$ polarization should be
                      possible. The key issues for tuning the machine are
                      discussed. The last chapter deals with a separate topic,
                      namely how to exploit a simple unitary model of spin motion
                      to describe electron depolarization and thereby expose a
                      misconception appearing in the literature.},
      keywords     = {thesis (INSPIRE) / electron p: storage ring (INSPIRE) /
                      electron: polarized beam (INSPIRE) / positron: polarized
                      beam (INSPIRE) / luminosity: upgrade (INSPIRE) / spin:
                      rotator (INSPIRE) / polarization (INSPIRE) / programming
                      (INSPIRE) / numerical calculations (INSPIRE) / DESY HERA
                      Stor (INSPIRE) / bibliography (INSPIRE)},
      cin          = {L},
      cid          = {I:(DE-H253)L-20120731},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)11},
      doi          = {10.3204/DESY-THESIS-2001-044},
      url          = {https://bib-pubdb1.desy.de/record/300393},
}