wbs7: electronics and data acquisition

MINERA

NuMI

MINERA DAQ Review

12 September 2005D. CasperUC Irvine

WBS7:Electronics and Data Acquisition

Overview (this talk): D. CasperFront-end Electronics: V. PaoloneData Acquisition: D. CasperFY06 Plans: P. Rubinov

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September 12, 2005 Electronics and DAQ 2

Outline

WBS 7 Components Design Specifications Design Issues and Concerns Progress to Date and Near Term Plans Cost and Schedule Overview Cost and Schedule Issues and Concerns Conclusions

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WBS 7: Electronics and DAQ

Front-end Electronics (7.1) One FE board per MAPMT High-voltage for MAPMTs Digitization and Timing

CROCs and DAQ (7.2, 7.3) One CROC per 48 MAPMTs Three VME crates + computer Front-end/computer interface Distribute trigger and synchronization

Power and Rack Protection (7.4) 48 V supplies, fanouts and interlock

Fermilab Network

DAQComputerwith RAID

Cluster

PermanentStorage

Control RoomConsole

VME Crates

PVIC/VME Interface

CROC VMEReadout

Module (x11)

M64 MAPMT andTRiP-based Multi-BufferDigitizer/TDC Card withEthernet Slow-Control

Interface(12 PMTs/Ring)

LVDS Digital Token Ring(4 Rings/VME Module)

Two-tierLow-Voltage

Distribution SystemOptical FibersFrom Detector

48V, 20 A DC

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Specifications

MAPMT High-Voltage PMT interface card or “base” (inside PMT box) Controller on front-end board (outside PMT)

Charge and Time Measurement Measure 1 – 200 photo-electrons Measure relative hit time (on single front-end board) to a few nanoseconds

Synchronization Measure global time (between front-end boards) to a few nanoseconds

Trigger Tap into NuMI timing signals through MINOS

Readout Handle rates up to 1 kHz (for PMT testing and calibration)

Control MAPMT HV control and monitoring Configuration Power and Rack Protection (7 kW estimated requirement)

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Design Issues and Concerns

Need to test PMT “base” and HV subsystem TriP or TriP-T?

TriP is known to work, but now obsolete Need to test TriP-T

Triggering and Synchronization Need to flesh-out interface with NuMI and MINOS Understand what auxiliary electronics are required Investigate possibility of self-triggering

Readout Requirements for PMT testing unspecified Requirements for Veto Wall unspecified

Infrastructure Siting inside experimental hall needs to be understood Concrete design of power distribution system does not exist

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Progress to Date/Near-Term Plans

Progress Basic front-end board design concept tested successfully LVDS chaining tested successfully (front-end boards only)

Near Term Plans Continue tests of first front-end prototype Test HV “base” design Test and evaluate TriP-T Begin design of second front-end prototype Begin design of CROC prototype

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Cost and Schedule Overview (I)

WBS Task Name Labor Total M&S Cost M&SContingency

% Contingency Total Cost

7.1 Front-End Electronics $225,698 $436,480 $0 0 $662,1787.1.1 TriP Refabrication, Packaging $0 $70,000 $0 0.2 $70,0007.1.2 TriP Checkout $0 $15,000 $0 1 $15,0007.1.3 High Voltage CW Prototype $5,600 $0 $0 0 $5,6007.1.4 FE 2nd Prototype Design $63,360 $0 $0 0 $63,3607.1.5 Begin Front End 2nd Prototype Production $0 $0 $0 0 $07.1.6 FE 2nd Prototype Production $0 $12,120 $0 0 $12,1207.1.7 FE 2nd Prototype Firmware $20,160 $0 $0 0 $20,1607.1.8 FE 2nd Prototype Testing $35,616 $0 $0 0 $35,6167.1.9 FE Final Design (post 2nd prototype) $39,424 $0 $0 0 $39,424

7.1.10 FE Board Firmware $23,520 $0 $0 0 $23,5207.1.11 FE Board Testing $21,200 $0 $0 0 $21,2007.1.12 FE Board Initial Production $0 $169,680 $0 0.2 $169,6807.1.13 FE Component Procurement $0 $0 $0 0 $07.1.14 FE Test Stand Development $9,408 $0 $0 0 $9,4087.1.15 FE Board Final Production $0 $169,680 $0 0.2 $169,6807.1.16 FE Board Production Complete $0 $0 $0 0 $07.1.17 FE Board Checkout with Testing $5,950 $0 $0 0 $5,950

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Cost and Schedule Overview (II)

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Cost and Schedule Overview (III)

Current schedule is out of date e.g. CROC design did not begin on 6/1/05 and will not be completed on 9/20/05

Projected Schedule Front-End Boards:

» PMT bases going out this week

» Test PMT bases

» TriP vs. TriP-T decision, then order

» Begin 64-channel (second) prototype design (January ‘06)

» Finish production and testing of 64-channel prototype (July ’06) CROCs:

» Should begin design as soon as possible

» Finish production and testing of prototype by July ’06

Note BOTH 64-channel front-end AND CROC prototypes are required for PMT testing (MSP file is missing an important constraint!)

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Cost and ScheduleIssues and Concerns

PMT Testing (WBS 6) Drives Our Schedule Need to understand required components and coordinate schedules M&S costs for prototypes (7.1.6 and 7.2.3) probably underestimated (depends on

number required) TriP Decision

Required before proceeding with design of second front-end prototype Front-End Board Costs

Need to refine after switching to PMT base inside PMT box Auxiliary Electronics

MINOS timing module for NuMI synchronization not explicitly included in WBS Veto Wall DAQ Requirements (if any) Unspecified Electronics Design

Paul is unavailable until roughly 1/06 Design of CROC prototype should start as soon as possible

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Conclusions

Base Cost: $1,298,614 (total, no contingency) M&S: $771,390 Labor: $527,224 Need to update after confirming the number of prototypes needed

Highest Contingency Items: Front-End Production (Initial + Final): 20% $339,360 = $67,872

» Firm-up cost estimate in view of changes to HV subsystem TriP Production & Checkout: 20%$70,000 + 100% $15,000 = $29,000

» Reason for large contingency not so clear CROC Production: 50% $48,000 = $24,000

» Need a concrete design Infrastructure (7.4) Contingency Currently Underestimated

» $4,480 on $219,132 project ($124,600 M&S) seems too low Schedule Risks:

Most important technical risks already addressed by front-end prototype Only serious constraint is PMT testing

» Understand the WBS 6 schedule» Begin work on CROC design in parallel to front-end

wbs7: electronics and data acquisition

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