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@INPROCEEDINGS{Wintle:619004,
      author       = {Wintle, Arianna and Augustin, Heiko and Dittmann, Lukas and
                      Huth, Lennart and Immig, David Maximilian and Kolb, Ruben
                      and Peric, Ivan and Schoening, Andre and Sefkow, Felix and
                      Stanitzki, Marcel},
      title        = {{T}ele{P}ix2: {A} {HVCMOS} pixel sensor for {F}ast {T}iming
                      and {R}egion of {I}nterest {T}riggering},
      reportid     = {PUBDB-2024-07314},
      year         = {2024},
      abstract     = {The DESY II Test Beam Facility offers electrons with a user
                      selectable momentum ranging from 1-6GeV alongside beam
                      telescopes as precise reference tracking systems. Whilst
                      providing a very highspatial resolution, they provide no
                      timestamps for individual hits within the readout frame.
                      Thelength of this readout frame means the telescopes
                      frequently read out hits from multiple electronstogether,
                      without an additional segmented timing layer, it becomes
                      impossible to assign tracks tospecific triggers.
                      Additionally a size mismatch between the trigger of the
                      telescope and the testdevice leads to inefficient data
                      taking. To overcome this, a configurable region of interest
                      trigger isneeded.TelePix2 is a High Voltage Monolithic
                      Active Pixel Sensor (HV-MAPS); it provides both fast
                      timingwith a timestamp of 4 ns and a fast digital single
                      ended trigger output with a configurable region ofinterest
                      down to the level of individual pixels.The sensor,
                      implemented in the 180 nm HV-CMOS process of TSI, has a
                      pixel matrix of 120 columnsby 400 rows with a pixel size of
                      165 x 25 µm leading to an active area of size 19.8 x 10
                      mm2. Both anamplifier and comparator are housed within the
                      pixel electrode. Three tune bits can be set on a perpixel
                      basis to apply an offset to the comparator threshold for
                      trimming purposes. The range of theoffset these tune bits
                      apply is controlled by a separate global DAC parameter.The
                      discriminated hit signal is transferred to the periphery.
                      Here timestamps are assigned to therising and falling edge,
                      allowing for offline timewalk and delay corrections. The
                      readout of hitsis executed in a data driven column drain
                      scheme via a 1.25 GBit/s link. The DAQ of TelePix2 isbased
                      on the HV-MAPS DAQ developed in Heidelberg and is fully
                      integrated with EUDAQ2 and theAIDA-TLU.Here,
                      characterisation results of TelePix2 are presented based on
                      the latest test beam measurements.A time resolution, without
                      additional corrections for time-walk and pixel to pixel
                      fluctuations, below4 ns was found at an efficiency above
                      $99\%$ at a depletion voltage of -85 V. The time resolution
                      ofthe trigger output from TelePix2 is around 2.5 ns.
                      TelePix2 is utilised by users successfully and iscurrently
                      transitioning to regular user infrastructure at the DESY II
                      Test Beam Facility.},
      month         = {Nov},
      date          = {2024-11-18},
      organization  = {Eleventh International Workshop on
                       Semiconductor Pixel Detectors for
                       Particles and Imaging, Strasbourg
                       (France), 18 Nov 2024 - 22 Nov 2024},
      cin          = {FTX / FHTestBeam / ATLAS},
      cid          = {I:(DE-H253)FTX-20210408 / I:(DE-H253)FHTestBeam-20150203 /
                      I:(DE-H253)ATLAS-20120731},
      pnm          = {622 - Detector Technologies and Systems (POF4-622) / DFG
                      project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe
                      (390833306)},
      pid          = {G:(DE-HGF)POF4-622 / G:(GEPRIS)390833306},
      experiment   = {EXP:(DE-H253)TestBeamline22-20150101},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://bib-pubdb1.desy.de/record/619004},
}