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@INPROCEEDINGS{Poncza:868249,
      author       = {Poncza, Vera and Lehrach, Andreas},
      title        = {{S}earch for {E}lectric {D}ipole {M}oments at {COSY} in
                      {J}ülich - {S}pin-{T}racking {S}imulations using {BMAD}},
      reportid     = {FZJ-2019-06808},
      isbn         = {978-3-95450-208-0},
      pages        = {914-917},
      year         = {2019},
      abstract     = {The observed matter-antimatter asymmetry in the universe
                      cannot be explained by the StandardModel (SM) of particle
                      physics. In order to resolve the matter dominance an
                      additional CP violatingphenomenon is needed. A candidate for
                      physics beyond the SM is a non-vanishing Electric
                      DipoleMoment (EDM) of subatomic particles. Since permanent
                      EDMs violate parity and time reversalsymmetries, they are
                      also CP violating if the CPT-theorem is assumed.The JEDI
                      (Jülich Electric Dipole moment Investigations)
                      collaboration in Jülich is preparing adirect EDM
                      measurement of protons and deuterons first at the storage
                      ring COSY (COoler SYn-chrotron) and later at a dedicated
                      storage ring.In order to analyse the data and to disentangle
                      the EDM signal from systematic effects spin
                      trackingsimulations are needed. Therefore a model of COSY
                      was implemented using the software libraryBmad. It includes
                      the measured magnet misalignments of the latest survey and a
                      simplifieddescription of the RF-Wien Filter device that is
                      used for the EDM measurement. The modelwas successfully
                      benchmarked using analytical predictions of the spin
                      behavior. A crucial pointregarding the data analysis is the
                      knowledge of the orientation of the invariant spin axis
                      withvanishing EDM at the position of the RF-Wien Filter.
                      Especially its radial component is unknownand spin tracking
                      simulations can be used to determine this missing number.
                      Tracking results aswell as the algorithm to find the
                      invariant spin axis will be presented.},
      month         = {May},
      date          = {2019-05-19},
      organization  = {10th International Particle
                       Accelerator Conference, Melbourne
                       (Australia), 19 May 2019 - 25 May 2019},
      cin          = {IKP-4 / JARA-FAME},
      cid          = {I:(DE-Juel1)IKP-4-20111104 / $I:(DE-82)080023_20140620$},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF3-612) / srEDM -
                      Search for electric dipole moments using storage rings
                      (694340) / 631 - Accelerator R $\&$ D (POF3-631)},
      pid          = {G:(DE-HGF)POF3-612 / G:(EU-Grant)694340 /
                      G:(DE-HGF)POF3-631},
      experiment   = {EXP:(DE-Juel1)JEDI-20170712},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      url          = {https://juser.fz-juelich.de/record/868249},
}