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@ARTICLE{Costa:596797,
      author       = {Costa, Andrea and Lusardi, Nicola and Garzetti, Fabio and
                      Ronconi, Enrico and Maffessanti, Stefano and Danilevski,
                      Cyril and Lomidze, David and Turcato, Monica and Porro,
                      Matteo and Geraci, Angelo},
      title        = {{A} {S}tudy of the {L}atest {U}pdates of the {DAQ}
                      {F}irmware for the {DSSC} {C}amera at the {E}uropean {XFEL}},
      journal      = {IEEE access},
      volume       = {11},
      issn         = {2169-3536},
      address      = {New York, NY},
      publisher    = {IEEE},
      reportid     = {PUBDB-2023-06284},
      pages        = {84323 - 84335},
      year         = {2023},
      abstract     = {The European X-ray Free Electron Laser (EuXFEL) is a light
                      source of the 4th generation which provides spatially
                      coherent ultrashort X-ray pulses at high rate. The facility
                      enabled unprecedented advancement in fundamental research,
                      but also needed new detectors to fit the EuXFEL
                      requirements, such as single photon resolution, large
                      dynamic range, and high repetition rate: three 2D megapixel
                      detectors have been developed to cope with the demanding
                      environment. The DEPleted Field Effect Transistors (DEPFET)
                      Sensor with Signal Compression (DSSC) detector is one of
                      them. The parallel readout from each pixel is performed
                      employing a dedicated Application Specific Integrated
                      Circuit (ASIC). The generated data flow is read through a
                      2-stage Field Programmable Gate Array (FPGA)-based Data
                      AcQuisition (DAQ) chain: the Input Output Board (IOB)
                      controls the primary readout from 16 ASICs and serializes
                      data on high-speed links that are sent to the Patch Panel
                      Transceiver (PPT). It is also responsible for the clock
                      distribution and timing control of the front-end and
                      switched power channels. The PPT reorders and forwards the
                      received data toward the EuXFEL back-end, and allows remote
                      control over the whole DAQ. A first DSSC camera, based on
                      miniaturized silicon drift detectors (mini-SDD) has been
                      available for users’ experiments since 2019, and a second
                      DEPFET-based camera is under construction. The IOB firmware
                      has been thoroughly reviewed and modified to cope with the
                      new DEPFET sensors’ physics and to improve the performance
                      of both the mini-SDD and DEPFET versions. We present an
                      overview of the DSSC, focusing on the DAQ, highlighting the
                      main properties of the environment where the detector
                      operates. We assess the firmware improvements introduced,
                      with a particular focus on the IOB, and present the results
                      obtained in comparison to the original firmware.},
      cin          = {FEC},
      ddc          = {621.3},
      cid          = {I:(DE-H253)FEC-20120731},
      pnm          = {622 - Detector Technologies and Systems (POF4-622)},
      pid          = {G:(DE-HGF)POF4-622},
      experiment   = {EXP:(DE-H253)XFEL-Exp-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001049935500001},
      doi          = {10.1109/ACCESS.2023.3302400},
      url          = {https://bib-pubdb1.desy.de/record/596797},
}