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@ARTICLE{Bernauer:301920,
      author       = {Bernauer, Jan and Diefenbach, J. and Elbakian, G. and
                      Gavrilov, G. and Goerrissen, N. and Hasell, Douglas and
                      Henderson, Brian and Holler, Yorck and Karyan, Gevorg and
                      Ludwig, Joerg and Marukyan, H. and Naryshkin, Youri and
                      O'Connor, C. and Russell, Rebecca and Schmidt, Axel and
                      Schneekloth, U. and Suvorov, K. and Veretennikov, D.},
      title        = {{M}easurement and tricubic interpolation of the magnetic
                      field for the {OLYMPUS} experiment},
      journal      = {Nuclear instruments $\&$ methods in physics research / A},
      volume       = {823},
      issn         = {0168-9002},
      address      = {Amsterdam},
      publisher    = {North-Holland Publ. Co.},
      reportid     = {PUBDB-2016-02977},
      pages        = {9 - 14},
      year         = {2016},
      note         = {(c) Elsevier B.V. The arxiv v1 version matches with the
                      post referee version.},
      abstract     = {The OLYMPUS experiment used a 0.3T toroidal magnetic
                      spectrometer to measure the momenta of outgoing charged
                      particles. In order to accurately determine particle
                      trajectories, knowledge of the magnetic field was needed
                      throughout the spectrometer volume. For that purpose, the
                      magnetic field was measured at over 36,000 positions using a
                      three-dimensional Hall probe actuated by a system
                      oftranslation tables. We used these field data to fit a
                      numerical magnetic field model, which could be employed to
                      calculate the magnetic field at any point in the
                      spectrometer volume. Calculations with this model were
                      computationally intensive; for analysis applications where
                      speed was crucial, we pre-computed the magnetic field and
                      its derivatives on an evenly spaced grid so that the field
                      could be interpolated between grid points. We developed a
                      spline-based interpolation scheme suitable for SIMD
                      implementations, with a memory layout chosen to minimize
                      space and optimize the cache behavior to quickly calculate
                      field values.This scheme requires only one-eighth of the
                      memory needed to storenecessary coefficients compared with a
                      previous scheme (Lekien and Marsden, 2005 [1]). This method
                      was accurate for the vast majority of the spectrometer
                      volume, though special fits and representations were needed
                      to improve the accuracy close to the magnet coils and along
                      the toroidal axis.},
      cin          = {OLYMP},
      ddc          = {530},
      cid          = {I:(DE-H253)OLYMP-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF3-611)},
      pid          = {G:(DE-HGF)POF3-611},
      experiment   = {EXP:(DE-H253)OLYMPUS-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000374661600002},
      doi          = {10.1016/j.nima.2016.03.115},
      url          = {https://bib-pubdb1.desy.de/record/301920},
}