Detector

IPHC-LBNL Phone Conference

News and PXL sensor (Ultimate) testing at LBNL

L. Greiner#IPHC-LBNL Phone Conference 05/2011STAR1PXL Project NewsPreparation for CD-2/3 review at BNL in JulyPrimarily a cost and schedule review but with some technical content.Releases construction funding.A set of documentation for the PXL detector is available at http://rnc.lbl.gov/hft/hardware/docs/sensor_review/summary_v2.doc

New Virtex-6 based RDO system boards design.Design in progress3 PCB architecture, new connectors, cables, 9U VME physical format.Details at http://rnc.lbl.gov/hft/hardware/docs/ultimate/V6_RDO_MB_design_plans_hw_meeting.pptx Expected to be completed and ready to test in July.

Significant Progress in mechanical structures.See pictures next slide

L. Greiner#IPHC-LBNL Phone Conference 05/2011STARL. Greiner#IPHC-LBNL Phone Conference 05/2011STARPXL Mechanical Construction

http://rnc.lbl.gov/hft/hardware/docs/ultimate/HFT_Mechanics_20110428.pptx L. Greiner#IPHC-LBNL Phone Conference 05/2011STARL. Greiner#IPHC-LBNL Phone Conference 05/2011STARUltimate Sensor Testing

5 Sensors mounted to individual test boards.

2 loaded with digital outputs only.3 loaded with digital outputs + analog output buffering.L. Greiner#IPHC-LBNL Phone Conference 05/2011STARL. Greiner#IPHC-LBNL Phone Conference 05/2011STARUltimate Sensor TestingTesting plan

Power-on tests Functional testingCharacterization

Status

We have done power on testing and are beginning functional testing. More on this on the next slide. JTAG is working and we can configure all registers. More to come.

L. Greiner#IPHC-LBNL Phone Conference 05/2011STARL. Greiner#IPHC-LBNL Phone Conference 05/2011STARPower-on observationsUltimate un-configured current draw.VDDA ~ 360 mA (E-4), 370 mA (A-2)

After RSTB => GND.VDDA ~ 0 mA

Power on sequence dependent: (RSTB tied to VDDA)Sequence: pwr-on VDDA ~ 490 mA, pwr-on VDDD ~ 620 mA

This is a surprise since Phase-1 did not exhibit this behavior.

Previous agreement to tie RSTB to VDDD to eliminate the need for this trace on the crowded readout cable.

This current draw is not immediately compatible with the current plan for no startup sequence LU protected power supplies for the ladder.L. Greiner#IPHC-LBNL Phone Conference 05/2011STARL. Greiner#IPHC-LBNL Phone Conference 05/2011STARQuick architecture reviewLadder x 4FPGALU prot. powerMTB x 1PowerSuppliesControlPCsTriggerDAQRDO PCsSIUADCUSBi/oRDO board x 1Sensor testingProbe testingSRAMBlack cfg, ctl, clk. pathBlue data pathRed power / gnd pathGreen testing pathfiberUnified Development PlatformL. Greiner#IPHC-LBNL Phone Conference 05/2011STARL. Greiner#IPHC-LBNL Phone Conference 05/2011STARPower-on current draw2 possible solutions with many variants:RSTB Bus on cable:Control from FPGA startup sequence controlRC timer circuit on cable (or MTB) no startup sequence control requiredRSTB a known sensitive line?RSTB pad bonded to (any) power bus:Bonded to VCCA startup sequence control required. Activate or reset LU-PS

Note that either is inherently safe as the LU protection limits current available to the sensors.

L. Greiner#IPHC-LBNL Phone Conference 05/2011STARL. Greiner#IPHC-LBNL Phone Conference 05/2011STARSummaryFor LBNL the testing of the PXL sensor has just begun and we will be moving to functional testing next.Power-on high current draw can be solved in a variety of ways we will select one and incorporate it into the design.We are very interested in knowing if there are any known operational issues, variations from the manual, or hints for operation that IPHC has already discovered. This will help a lot with our testing.

L. Greiner#IPHC-LBNL Phone Conference 05/2011STARL. Greiner#IPHC-LBNL Phone Conference 05/2011STAR