1. NA62 straw tracker readout status Georgios Konstantinou

2. NA62 straw tracker data flow Front end boardsStraw readout boardTEL62

3. Front end to SRB Successful testing for 2.5 m cable, 800 Mbps of data readout Finalizing commands and increasing reliability of the link (firmware) Front end boards Straw readout board

4. SRB to TEL62 Link: Testing with different cable lengths and properties: -Twisted pair Ethernet cable vs optical link (cost, radiation hardness) -Electronic noise(office/lab, building renovation) -Different grounds -Mezzanine card Straw readout board TEL62

5. SRB to TEL62 Cable testing: – Setting: Use of National Semiconductors DS92LV3241/DS92LV3242 ~ 2.5 Gbps SERialiser- DESerialiser with DE0-nano Cyclone IV FPGA test boards. – Different lengths of STP-UTP cables. – Different pre-emphasis choices. Cable type and lengthPER(BER) order STP 6m10 -14 (10 -15 ) UTP 2m10 -13 (10 -11 ) STP 10m10 -14 (10 -15 ) UTP10m10 -12 (10 -10 )

6. SRB to TEL62 Why unshielded? - possibility of radiation hard materials - CERN store Disruption Factors – Drilling! – Cable spatial distribution – Heavy electronics on operation within 1m from the cable – Compared to better results before drilling and in the office (Andrea Villar’s measurements)

7. Mezzanine Card 12 links (extensive (~30) Gbps possibility), unified on board FPGA SERDES chips, standard (or controlled) on board pre-emphasis and cable equalisation circuitry. Design starting soon (after SRB link firmware is finalized)

8. The End Thank you, Questions?