January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology KM3NeT CLBv2 1

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology CLBv2-Proto Status Before proceeding to CLBv2-Proto2… CLBv2 2

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology Timing Demo (SPEC-DIO / CLBv2) ◦ White Rabbit 1 ns accurate ◦ See also: Ethernet Demo (Linux PC + Optical Network card / CLBv2) ◦ Ping and basic UDP packet transfer (same as described in Y96CDXsBKivap8j55cWaLbH7mjw/edit) Y96CDXsBKivap8j55cWaLbH7mjw/edit ◦ aap CLBv2_Proto DEMO (Yesterday) 3 PPS

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology White Rabbit Switch Near future: timing and Ethernet 4 PPS 10MHz PPS Use switch as is: ◦ no broadcast (yet) ◦ Standard firmware/software Timing Reference Grand Master Mode

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology Determine clock stability Use a proper master clock ◦ external PPS and 10 MHz reference  10 MHz Rubidium standard + KC705 as PPS source “= divide by ” ◦ SPEC in grand master mode ◦ Or WR Swtich-v3… White Rabbit timing 5 Sloppy first order measurement: time between PPS (horizontal 20 ps/div)

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology Apart from the listing “KM3NeT_ELEC_2014_001_Doc- Prototype_design_changes_ELEC_draft”KM3NeT_ELEC_2014_001_Doc- Prototype_design_changes_ELEC_draft ◦ Just received a warning possible reset issue with the CDCM61004 (GSI, Stefan Rauch; need to investigate further…) Electrical issues Mechanical issues Before proceeding to CLBv2-Proto2 6

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology 1 Gbit flash issue  BPI flash instead of SPI flash? Determine timing margin  Constraints 125 MHz + 10% = 140 MHz (P&R for XC160T-1 of current design seems successful)  Try Slow-Slew rate to suppress noise? System test  Readout of a complete assembled (½) DOM including PMT’s (needs integrated firmware, embedded & DAQ software, shore station and rudimentary optical network)  Verify:  Throughput  Noise  Form a system test we also learn to setup a proper test procedure  Write a test procedure document  Write test software / Build test equipment EMI  We did our best to have a clock-enable on the Octopus boards to avoid noise on the PMT bases.  How noisy is the CLBv2?  We don’t want to spoil the 24 bit Piezo ADC (a 144 DB signal/noise ratio!)  This may lead to a mechanical issue (reversing component side of the PCB and/or extra shielding) Electrical Issues 7

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology Apart from the listing “KM3NeT_ELEC_2014_001_Doc- Prototype_design_changes_ELEC_draft”KM3NeT_ELEC_2014_001_Doc- Prototype_design_changes_ELEC_draft Holes around the FPGA to mount an industry standard heat sink?  choose a proper heat-sink  sort out the mechanical structure Consider alternative SFP location  solve fiber routing issue  try the molex SFP flex rigid, later probably design custom SFP flex rigid to serve our needs. Get rid of the RJ45 connectors (Piezo & Hydrophone)  Piezo is mounted on the octopus board so this is no longer needed on the CLBv2?  Hydrophone only uses two signals “Clk” and “AES_OUT” plus power. Use a smaller connector and remove RS485 (saves money, power and noise?).  How does the hydrophone fit in mechanically anyhow? EMI  Verify readout of a complete assembled DOM including PMT’s (needs integrated firmware, embedded & DAQ software, shore station and rudimentary optical network)  Extra shieling needed? Mechanical Issues 8

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology Firmware integration (WRPC, IPMUX, LM32_2 nd, State Machine, TDCs, Hydro, Multi-boot) Embedded software (+ connection to WR embedded software) Rudimentary optical network ◦ one point to point link, 2 SFP’s ◦ Note that the Molex SFP tail must be used since the SFP cage will no longer be accessible once the DOM is assembled Rudimentary shore station (one WR switch V3) DAQ software As least 19 PMT’s and bases 1 Octopus large, 1 Octopus small Piezo, Hydrophone, Nano beacon, AHRS ½ DOM integration Test & learn! Roadmap towards CLBv2-Proto2 9

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology There must be knowledge transfer from 7- Solutions to the collaboration. To my opinion, the best way to do this is to repeated the 7-solutions work at different locations: 1.All partners gain knowledge (including 7- Solutions) 2.We have multiple test sites My first step towards this is to use a WR switch as is and later change firmware/software… General remark 10

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology Questions? Discussion… 11

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology Backup Slides More details… 12

January 28-30, 2014KM3NeT, Electronics Workshop A‘dam Peter Jansweijer Nikhef Amsterdam Electronics- Technology Clocking 13 Phase Compensated Clocks