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WBS7: Electronics and Data Acquisition

WBS7: Electronics and Data Acquisition. Overview (this talk): D. Casper Front-end Electronics: V. Paolone Data Acquisition: D. Casper FY06 Plans: P. Rubinov. Outline. WBS 7 Components Design Specifications Design Issues and Concerns Progress to Date and Near Term Plans

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WBS7: Electronics and Data Acquisition

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  1. WBS7:Electronics and Data Acquisition Overview (this talk): D. Casper Front-end Electronics: V. Paolone Data Acquisition: D. Casper FY06 Plans: P. Rubinov

  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 Electronics and DAQ

  3. 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 Electronics and DAQ

  4. 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) Electronics and DAQ

  5. 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 Electronics and DAQ

  6. 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 Electronics and DAQ

  7. Cost and Schedule Overview (I) Electronics and DAQ

  8. Cost and Schedule Overview (II) Electronics and DAQ

  9. 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!) Electronics and DAQ

  10. 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 Electronics and DAQ

  11. 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 Electronics and DAQ

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