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PreprintCC BY 4.0arXiv

Optical Acceptance Testing of Serenity-S1 Boards for the CMS HGCAL Phase-2 Backend Electronics

  • A. Qamesh
  • P. D. Dauncey
  • H. A. Krause
  • P. Keskiner
  • S. Mallios
  • R. Shukla
  • N. Tarannum
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Abstract

The CMS Phase-2 upgrade includes a new high-granularity calorimeter. The calorimeter electronics will include around 300 Serenity-S1 FPGA boards that use Samtec FireFly electro-optical modules with a link speed of up to 25 Gbps. General production tests performed by the central Serenity group only validate the high-speed links via copper loopback cables. We present an optical acceptance test framework specifically designed for the calorimeter, providing comprehensive link and slow-control validation of installed FireFly modules under realistic operating conditions. This test combines loopback and board-to-board testing, extended bit error ratio measurements, and continuous module health monitoring within an automated workflow, delivering structured diagnostics and ensuring reliable large-scale system deployment.

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Cite

BibTeXRIS
BibTeX
@misc{qamesh2026optical,
  title = {{Optical Acceptance Testing of Serenity-S1 Boards for the CMS HGCAL Phase-2 Backend Electronics}},
  author = {A. Qamesh and P. D. Dauncey and H. A. Krause and P. Keskiner and S. Mallios and R. Shukla and N. Tarannum},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.00418},
  eprint = {2611.00418},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.00418},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Optical Acceptance Testing of Serenity-S1 Boards for the CMS HGCAL Phase-2 Backend Electronics
AU  - A. Qamesh
AU  - P. D. Dauncey
AU  - H. A. Krause
AU  - P. Keskiner
AU  - S. Mallios
AU  - R. Shukla
AU  - N. Tarannum
PY  - 2026
DA  - 2026/11/01
PB  - arXiv
DO  - 10.48550/arxiv.2611.00418
UR  - https://arxiv.org/abs/2611.00418
AB  - The CMS Phase-2 upgrade includes a new high-granularity calorimeter. The calorimeter electronics will include around 300 Serenity-S1 FPGA boards that use Samtec FireFly electro-optical modules with a link speed of up to 25 Gbps. General production tests performed by the central Serenity group only validate the high-speed links via copper loopback cables. We present an optical acceptance test framework specifically designed for the calorimeter, providing comprehensive link and slow-control validation of installed FireFly modules under realistic operating conditions. This test combines loopback and board-to-board testing, extended bit error ratio measurements, and continuous module health monitoring within an automated workflow, delivering structured diagnostics and ensuring reliable large-scale system deployment.
ER  -