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@ARTICLE{Schwab:616219,
      author       = {Schwab, B. and Zink, A. and Varner, Gary and Depaoli, D.
                      and Hinton, J. and Liu, G. and Okumura, A. and Ross, D. and
                      Schäfer, J. and Schoorlemmer, H. and Tajima, H. and
                      Vandenbroucke, J. and White, Richard and Watson, Jason John
                      and Zorn, Justus and Funk, Stefan},
      title        = {{CTC} and {CT}5{TEA}: {A}n advanced multi-channel digitizer
                      and trigger {ASIC} for imaging atmospheric {C}herenkov
                      telescopes},
      journal      = {Nuclear instruments $\&$ methods in physics research /
                      Section A},
      volume       = {1069},
      issn         = {0168-9002},
      address      = {Amsterdam},
      publisher    = {North-Holland Publ. Co.},
      reportid     = {PUBDB-2024-06379, arXiv:2409.06435. arXiv:2409.06435},
      pages        = {169841},
      year         = {2024},
      note         = {18 pages, 26 figures, 1 table},
      abstract     = {We have developed a new set of Application-Specific
                      Integrated Circuits (ASICs) of the TARGET family (CTC and
                      CT5TEA), designed for the readout of signals from
                      photosensors in cameras of Imaging Atmospheric Cherenkov
                      Telescopes (IACTs) for ground-based gamma-ray astronomy. We
                      present the performance and design details. Both ASICs
                      feature 16 channels, with CTC being a Switched-Capacitor
                      Array (SCA) sampler at 0.5 to 1GSa/s with a 16,384 sample
                      deep storage buffer, including the functionality to digitize
                      full waveforms at arbitrary times. CT5TEA is its companion
                      trigger ASIC (though may be used on its own), which provides
                      trigger information for the analog sum of four (and 16)
                      adjacent channels. Since sampling and triggering takes place
                      in two separate ASICs, the noise due to interference from
                      the SCA is suppressed, and allows a minimal trigger
                      threshold of ≤ 2.5 mV (0.74photo electrons (p.e.)) with a
                      trigger noise of ≤ 0.5 mV (0.15p.e.). For CTC, a maximal
                      input voltage range from −0.5V up to 1.7V is achieved with
                      an effective bit range of > 11.6bits and a baseline noise of
                      0.7 mV. The cross-talk improved to ≤ $1\%$ over the whole
                      −3 dB bandwidth of 220MHz and even down to $0.2\%$ for
                      1.5V pulses of 10 ns width. Not only is the performance
                      presented, but a temperature-stable calibration routine for
                      pulse mode operation is introduced and validated. The
                      resolution is found to be ∼ $2.5\%$ at 33.7 mV (10p.e.)
                      and ≤ $0.3\%$ at 337 mV (100p.e.) with an integrated
                      non-linearity of < 1.6mV. Developed for the Small-Sized
                      Telescope (SST) and Schwarzschild-Couder Telescope (SCT)
                      cameras of the Cherenkov Telescope Array Observatory (CTAO),
                      CTC and CT5TEA are deployed for both prototypes and shall be
                      integrated into the final versions.},
      keywords     = {0000 (autogen) / 1111 (autogen) / Data acquisition circuits
                      (autogen) / Trigger concepts and systems (hardware and
                      software) (autogen) / Gamma telescopes (autogen) / Imaging
                      air Cherenkov telescope (autogen) / Camera electronics
                      (autogen)},
      cin          = {$Z_CTA$},
      ddc          = {530},
      cid          = {$I:(DE-H253)Z_CTA-20210408$},
      pnm          = {613 - Matter and Radiation from the Universe (POF4-613)},
      pid          = {G:(DE-HGF)POF4-613},
      experiment   = {EXP:(DE-H253)CTA-20150101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2409.06435},
      howpublished = {arXiv:2409.06435},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2409.06435;\%\%$},
      UT           = {WOS:001318607100001},
      doi          = {10.1016/j.nima.2024.169841},
      url          = {https://bib-pubdb1.desy.de/record/616219},
}