BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Validation of the Optical Communication of the Serenity-S1 Board a
 s Part of the CMS Phase 2 Upgrade
DTSTART:20260925T081500Z
DTEND:20260925T090000Z
DTSTAMP:20261030T050400Z
UID:indico-event-5851@indico.kit.edu
CONTACT:timo.muscheid@kit.edu
DESCRIPTION:Speakers: Pirilsu Keskiner\n\nFinal presentation of the Bachel
 or Thesis of Pirilsu Keskiner on the Validation of the Optical Communicati
 on of the Serenity-S1 Board as Part of the CMS Phase 2 Upgrade\nAbstractTh
 e Phase-2 upgrade of the Compact Muon Solenoid (CMS) experiment introduces
  the High Granularity Calorimeter (HGCAL)\, whose back-end electronics rel
 y on Serenity-S1\, a high-performance FPGA-based processing card in the Ad
 vanced Telecommunications Computing Architecture (ATCA) form factor. Of th
 e 777 Serenity-S1 boards planned for CMS Phase-2 production\, approximatel
 y 302 are allocated to HGCAL. Depending on a board’s functional role\, T
 rigger Stage-1\, Trigger Stage-2\, or Data Acquisition (DAQ)\, it is popul
 ated with a different number and type of Samtec FireFly electro-optical mo
 dules\, providing high-speed serial links at data rates of 10\, 16\, or 25
  Gb/s. The existing production quality-control chain\, comprising Factory 
 Acceptance Testing (FAT) and User Acceptance Testing (UAT)\, verifies the 
 fundamental electrical functionality of the boards and their high-speed li
 nks through copper-loopback connections and comparatively short bit-error-
 rate (BER) measurements\, but does not validate the installed optical tran
 smission paths or the I2C-based slow-control interfaces of the FireFly mod
 ules\, which are the coverage that is essential before HGCAL integration.\
 nThis thesis presents the development and validation of an Optical Accepta
 nce Test (OAT) framework for fully assembled Serenity-S1 boards. The frame
 work validates the optical high-speed links under realistic operating cond
 itions using both optical loopback and board-to-antiboard configurations\,
  allowing individual channels as well as complete transmission paths to be
  examined systematically. Extended PRBS-based bit-error-rate measurements 
 taken over longer observation periods assess link stability and identify m
 arginal or faulty channels that shorter production tests may not reveal. I
 n parallel\, automated I2C-based communication tests verify the accessibil
 ity\, configuration\, and monitoring of every installed FireFly module\, w
 hile relevant operating parameters\, in particular supply voltage andtempe
 rature\, are monitored continuously. The entire procedure\, from board con
 figuration through test execution and system-health monitoring to the stru
 ctured capture of results\, is integrated into an automated software workf
 low.\nFor every tested board\, the developed OAT framework produces reprod
 ucible test results and detailed diagnostic information\, enabling the tar
 geted identification of faults in optical links\, FireFly modules\, or the
 ir configuration that are not covered by the preceding production tests. T
 he Optical Acceptance Test thereby adds a dedicated HGCAL specific validat
 ion stage between board acceptance and system integration\, supporting the
  reliable qualification and large scale deployment of Serenity-S1 boards i
 n the CMS Phase-2 HGCAL back end.\n \nZoom-Link: https://kit-lecture.zoom
 -x.de/j/65067123013?pwd=SXuK8pa9fEqpM72g7d9wc30Y02dUcg.1\n \n\nhttps://in
 dico.kit.edu/event/5851/
LOCATION:Seminarraum EG + zoom (IPE)
URL:https://indico.kit.edu/event/5851/
END:VEVENT
END:VCALENDAR