sTGC Front end boards sTGC Front end boards NSW Electronics workshop November 2013 L. Levinson Weizmann Institute NSW Electronics workshop, November 20131L. Levinson

NSW Electronics workshop, November sTGC Front end boards

Issues  FE boards on both edges of chamber to balance heat  to avoid cables from side-to-side, need GBT on each edge   2 GBTs per quadruplet instead of GBT per layer  cabling is self-contained in one quadruplet  loss of one GBT means quadruplet lost MM does GBT per layer for 4 quadruplets Signal integrity Zebra connectors, same as for MM Slow Control Adapter, SCA, ASIC on every FEB for – Configuration of VMM and TDS via I 2 C – Temperature and voltage monitoring – Calibration of VMM? E-link connectors from FEB to GBT board: candidate: twinax ribbon Component height restriction: 9mm DC-DC height? ?separate analog, digital gnds for VMM L. LevinsonNSW Electronics workshop, November 20133

E-links E-link to each Companion, 80Mb/s 6 or 7 per strip FEB, 2 per pad/wire FEB  clock  TTC  data (If FELIX streams are used, status/monitoring data can also be sent on this link.) E-link to SCA, 80Mb/s, one per FEB  clock  configuration  configuration reply Can there be single clock pair from GBT? bussed or find a rad tol SLVS fan-out chip L. LevinsonNSW Electronics workshop, November 20134

Wire group “FEB” Flex PCB to extract wire signals and bring them to FEB on edge Wires are read out by single VMM per layer on the Pad FEB Wire VMMs need extra protection: transient suppressor Max 64 wire groups per detector L. LevinsonNSW Electronics workshop, November 20135

VMM2 board for trigger demonstrator 128 channels Design in progress L. LevinsonNSW Electronics workshop, November 20136