Week 22: Schematic Week 23-Week 27: Routing Gerber files have been available since 9th July 1st prototype: – PCB manufacturer: supervised by KIT – Cabling: KIT with ASICs CQFP160 from MATRA – Delivery: 3rd of October SPACIROC asic tests: July 2012

3 Package: CQFP 160pins by MATRA Received in May: 105 chips Dedicated test board: – 5 test boards: ok – Firmware and software ok Bonding 3 programs: Automatic tests Read out and plot results for one asic Scan and plot the mean results for all asics

List of the tests: Asic consumption: Avdd, Dvdd DC measurements: – Bandgap voltage: 2.5V – Pedestals : PA (2.5V), FSU (1V), VFS (1V),KI (1.5V) per channels – DAC linearity: DAC PA, DAC FS, DAC KI Slow control readout: check srout output Photon counting tests: Qinj=1/3pe – Scurve versus threshold: trig_pa, trig_fsu Gain test: scurve versus threshold at different gains KI tests: – Qinj=2pC/channels, data_ki versus threshold – Threshold defined, data_ki versus input charge for 3 different slow control configurations 105 asics Test duration: 6 min ASICs have to be handled with precaution

Results: – 105 asics were tested – Yield: 80% (88% with some a bit noisy) Enough ASICs for prototypes (2 EC_ASICs), Flight Model (6) and spares (at least 2)

TOP VIEW AC E FD B BOTTOM VIEW 1 connector: HIROSE FX2-120P-1.27DS 120 pins Header Right angle type Through hole 6 connectors: HIROSE FX2CA-68S-1.27DSA 68 pins (64 analog signals + 4 gnd) Receptacle Straight type Through hole 6 asics SPACIROC1 Packaging: CQFP 160 pins 3 on each side 115 mm 159 mm

7 No power consumption: – Probably all bonding wires were broken in the 6 asics Diodes on the pad weren’t seen No connection between two pins connected inside the asic (example vdd! pin 120 and pin79) Soldering temperature cycle at LAL  Steaming (80°C, more than 10 hours)  Oven: 4 temperature steps  With lead: 180,200,221,250°C ASIC n°174: steaming + two soldering cycles  Asic OK ASIC n°138: no steaming + one soldering cycle  Asic HS: no bonding  It looks like steaming is mandatory (MATRA agrees) and we probably should go to soldering paste with lead

Week 27: Schematic Week 28 – Week 31: Routing Gerber files have been available since September 5th 5 test boards have been produced – Company: SOS electronic (France) – Order: 10 th September – Delivery: 20 th September – Cabling: LAL, week 39 Firmware is modified by Eric Plaige (LAL) Software is modified

9 TEST_EC-ASIC EC-ASIC Power supply connector regulators FPGA programmer connectors 40Mhz oscillator Lemo connectors 120 pin connector USB

EC_ASIC: – The next week, we will test the EC_ASIC equipped with plastic asics packaged by Riken and cabled at KIT. – MATRA will help us (for free) They will perform X ray-scan to check the asic bonding on the dead ones They will remove the 6 asics of 1 EC_ASIC and replace them manually They will test few (rejected) asics with their standard soldering temperature cycles (lead and lead-free) TEST_EC_ASIC: – 2 boards have been cabled – Firmware and software have been already modified – debug to be done as soon as we have a working EC_ASIC

12 Specifications:  Readout MAPMT signals  Consumption: 1mW/channel  Photon counting: 100% trigger (1/3pe, 10 6 Gain)  Charge/time converter input range : 2pc – 200pc (10pe pe)  Radiation hardness Spatial Photomultiplier Array Counting and Integrating ReadOut Chip 1st version received in October 2010 Technology: AMS 0.35µm SiGe Dimensions : 4.6mm x 4.1mm (19 mm²) Power supply: 0-3V Packaging : P(C)QFP240(160)

13 64 channels Preamplifier with individual 8-bit gain adjustment Photo-electron counting (10-bit DACs) – 3 discriminator outputs : Trig_PA, Trig_FSU & Trig_VFS – Multiplexed discriminator outputs to Digital part – Many parameters available Charge to time converters (called KIs) – Designed in collaboration with JAXA/RIKEN – 9 outputs : 8 channels (8-pixel-Sum) + Last Dynode – Many parameters available Continuous Data acquisition & Readout every 2.5  s (GTU) – 8 identical digital module for PC – 1 digital module for KI First version of SPACIROC showed good behavior (intensive lab tests with and without MAPMT)

14 Package: CQFP 160pins by MATRA Quantity: 100 Cost: 105€/asic Delay: – Package material : 2 weeks – 3 prototypes: 2 weeks – 100 asics: 2 weeks One test board has been produced to sort chips – Cabling ok – Firmware is the same as the previous spaciroc test board – Software should be modified to perform automatic tests

15 Asic inputs: – Group by 8 consecutive anodes according to the pattern 4 by 2 – No crossing between wires for consecutive layers Outputs: – Only two routing wires between two connector pins in order to keep a good isolation More than one layer for the outputs routing – No crossing between inputs and data outputs LVDS signals – Pay attention to the 40MHz clock Be careful to power supply planes to minimize the noise spread – Choice to have two layers for gnd and avdd Maximum isolation on critical signals

Each ASIC is configured via 898 bits of slow control and 265 bits for the probe set-up. The 6 ASICs of the EC_ASIC are configured in a daisy chain mode, meaning that respectively 5388 and 1590 bits are sent for the slow control and the probes. This daisy chain is done through the signals sr_in and sr_out, the sr_out of one ASIC being the sr_in of the following ones like described in the figure bellow.