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@INPROCEEDINGS{Schambach:291943,
      author       = {Schambach, Joachim and Anderssen, Eric and Contin, Giacomo
                      and Greiner, Leo and Silber, Joe and Stezelberger, Thorsten
                      and Sun, Xiangming and Szelezniak, Michal and Videbæk,
                      Flemming and Vu, Chinh and Wieman, Howard and Woodmansee,
                      Sam},
      title        = {{T}he {STAR} {H}eavy {F}lavor {T}racker ({HFT})},
      address      = {Hamburg},
      publisher    = {Deutsches Elektronen-Synchrotron, DESY},
      reportid     = {PUBDB-2015-05677, DESY-PROC-2014-04},
      pages        = {659-664},
      year         = {2014},
      abstract     = {The heavy quark hadrons are suggested as a clean probe for
                      studying the early dynamic evolution of the dense and hot
                      medium created in high-energy nuclear collisions. The Heavy
                      Flavor Tracker (HFT) of the STAR experiment, designed to
                      improve the vertex resolution and extend the measurement
                      capabilities in the heavy flavor domain, was installed for
                      the 2014 heavy ion run of RHIC. It is composed of three
                      different silicon detectors arranged in four concentric
                      cylinders close to the STAR interaction point. The two
                      innermost layers are based on CMOS monolithic active pixels
                      (MAPS), featured for the first time in a collider
                      experiment, and the two outer layers are based on pads and
                      strips. The two innermost HFT layers are placed at a radius
                      of 2.8 and 8~cm from the beam line and accommodate 400
                      ultra-thin ($50 \mu m$) high resolution MAPS sensors
                      arranged in 10-sensor ladders to cover a total silicon area
                      of $0.16m^{2}$. Each sensor includes a pixel array of 928
                      rows and 960 columns with a $20.7\mu m$ pixel pitch,
                      providing a sensitive area of $\sim 3.8 cm^{2}$. The sensor
                      features $185.6 \mu s$ readout time and $170 mW/cm^{2}$
                      power dissipation, allowing it to be air cooled, which
                      results in a global material budget of only 0.5\% radiation
                      length per layer in the run 14 detector. A novel mechanical
                      approach to detector insertion enables effective
                      installation and integration of the pixel layers within a 12
                      hour shift during the on-going STAR Run. After a detailed
                      description of the design specifications and the technology
                      implementation, the detector status and operations during
                      the 200 GeV Au+Au RHIC run of 2014 will be presented in this
                      paper. A preliminary estimation of the detector performance
                      meeting the design requirements will be reported.},
      month         = {Aug},
      date          = {2014-08-25},
      organization  = {Panic2014, Hamburg (Germany), 25 Aug
                       2014 - 29 Aug 2014},
      keywords     = {resolution: vertex (INSPIRE) / STAR (INSPIRE) /
                      semiconductor detector: pixel (INSPIRE) / semiconductor
                      detector: microstrip (INSPIRE) / semiconductor detector:
                      design (INSPIRE) / tracking detector (INSPIRE) / spatial
                      resolution (INSPIRE) / mechanical engineering (INSPIRE) /
                      performance (INSPIRE)},
      cin          = {ATLAS / CMS / UNI/EXP},
      cid          = {I:(DE-H253)ATLAS-20120731 / I:(DE-H253)CMS-20120731 /
                      $I:(DE-H253)UNI_EXP-20120731$},
      pnm          = {611 - Fundamental Particles and Forces (POF3-611)},
      pid          = {G:(DE-HGF)POF3-611},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)15},
      doi          = {10.3204/DESY-PROC-2014-04/83},
      url          = {https://bib-pubdb1.desy.de/record/291943},
}