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@PHDTHESIS{Velyka:440957,
      author       = {Velyka, Anastasiia},
      othercontributors = {Jansen, Hendrik and Gallo-Voss, Elisabetta},
      title        = {{C}oncept and {D}evelopment of {E}nhanced {L}ateral {D}rift
                      ({ELAD}) {S}ensors},
      school       = {Universität Hamburg},
      type         = {Dissertation},
      address      = {Hamburg},
      publisher    = {Verlag Deutsches Elektronen-Synchrotron},
      reportid     = {PUBDB-2020-02268, DESY-THESIS-2020-014},
      series       = {DESY-THESIS},
      pages        = {192},
      year         = {2020},
      note         = {Dissertation, Universität Hamburg, 2019},
      abstract     = {In this dissertation the concept of a new type of silicon
                      tracking sensor called Enhanced Lateral Drift (ELAD) sensor
                      is presented. This technology is created to meet the
                      requirements for future linear e+e− colliders vertex and
                      tracking detectors. To date, there are two projects for
                      future linear colliders, ILC and CLIC. The physics goals at
                      both experiments demand a lightweight silicon vertex
                      detector and a large area silicon tracker. A spatial
                      resolution of a few micrometres and material budget less
                      than two percent of a radiation length per layer are
                      required.For the ELAD sensors the spatial resolution of the
                      impact position of ionising particles is improved by a
                      dedicated charge sharing mechanism, which is achieved by an
                      inhomogeneous electric field in the lateral direction in the
                      sensor bulk. The inhomogeneous electric field is created by
                      buried doping implants with a higher concentration with
                      respect to the background concentration of the bulk.Electric
                      field simulations based on Technology Computer-Aided Design
                      (TCAD) have been carried out for 2D and 3D geometries as
                      well as transient simulations with a traversing particle for
                      the 2D. The electric field profiles have been further
                      optimised regarding the resulting position resolution. The
                      simulations show a strong dependence of the charge sharing
                      mechanism on the concentrations of the buried implant.
                      Optimal values for this concentration enable a nearly linear
                      charge sharing between two neighbouring readout electrodes
                      as a function of the impact position.To estimate the
                      position resolution of an ELAD sensor, test beam simulations
                      using the AllPix2 software have been performed applying the
                      realistic electric field profiles from the TCAD simulations.
                      In the AllPix2 simulations 2D and 3D electric fields have
                      been used. Results of the geometry optimisation are shown
                      realising an optimal charge sharing and hence position
                      resolution. The position resolution of a few micrometers is
                      expected by using deep implants.A description of the
                      multi-layer production process is given. It represents a new
                      production technique allowing for deep bulk engineering.},
      cin          = {CMS},
      cid          = {I:(DE-H253)CMS-20120731},
      pnm          = {632 - Detector technology and systems (POF3-632) / PHGS,
                      VH-GS-500 - PIER Helmholtz Graduate School
                      $(2015_IFV-VH-GS-500)$},
      pid          = {G:(DE-HGF)POF3-632 / $G:(DE-HGF)2015_IFV-VH-GS-500$},
      experiment   = {EXP:(DE-H253)LHC-Exp-CMS-20150101},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      doi          = {10.3204/PUBDB-2020-02268},
      url          = {https://bib-pubdb1.desy.de/record/440957},
}