Electronics and Triggering Challenges for the CMS High Granularity Calorimeter for HL-LHC

  • Johan BorgEmail author
  • on behalf  of the CMS Collaboration
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 212)


The High Granularity Calorimeter (HGCAL) is presently being designed to replace the CMS endcap calorimeters for the High Luminosity phase at LHC. It will feature six million silicon sensor channels and 52 longitudinal layers. The requirements for the frontend electronics include a 0.3 fC-10 pC dynamic range, low noise (2000 e-) and low power consumption (10 mW /channel). In addition, the HGCAL will perform 50 ps resolution time of arrival measurements to combat the effect of the large number of interactions taking place at each bunch crossing, and will transmit both triggered readout from on-detector buffer memory and reduced resolution real-time trigger data. We present the challenges related to the frontend electronics, data transmission and off-detector trigger preprocessing that must be overcome, and the design concepts currently being pursued.



This work was funded in part by: H2020-ERC-2014-ADG 670406 - Novel Calorimetry.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Johan Borg
    • 1
    Email author
  • on behalf  of the CMS Collaboration
  1. 1.Imperial College LondonLondonUK

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