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Interferometer Sensing and Control (ISC)

Interferometer Sensing and Control (ISC). Cost and Schedule Breakout Presentation NSF Review of Advanced LIGO Project. Richard Abbott CIT. ISC Description & Deliverables. Spares included in deliverable costing In-vacuum Photo-detectors WBS 4.1 ($914k)

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Interferometer Sensing and Control (ISC)

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  1. Interferometer Sensing and Control (ISC) Cost and Schedule Breakout Presentation NSF Review of Advanced LIGO Project Richard Abbott CIT

  2. ISC Description & Deliverables • Spares included in deliverable costing • In-vacuum Photo-detectors WBS 4.1 ($914k) • Radio Frequency (RF) detectors ($268k) • Alignment Sensing & Control (ASC) detectors ($506k) • DC Readout detectors ($140k) • Readout & Signal Conditioning Electronics ($859k) • RF Readout Chain WBS 4.2 ($179k) • ISC Signal Conditioning Electronics WBS 4.3.2 ($327k) • RF Signal Source WBS 4.3.4 ($159k) • ASC RF Demodulation WBS 4.3.5 ($194k) • Digital Controls ($1.13M) • Real-time Processing & Networking WBS 4.3.1 ($469k) • ISC Analog-to-digital Converters (ADCs) WBS 4.3.3 ($657k)

  3. ISC Description & Deliverables (cont.) • Software ($715k Labor) • Real-time Software WBS 4.4 ($412k) • Diagnostic and Supervisory Software WBS 4.5 ($303k) • Video Monitoring System WBS 4.6.2 ($401k) • ISC Sensing Tables WBS 4.6.3 ($1.314M) • Output Mode Cleaner WBS 4.7.1 ($303k) • Vacuum Detection Infrastructure WBS 4.8 ($740k) • Seismic Platform Interferometer WBS 4.9 ($577k) • Fabrication Testing and Validation WBS 4.7 ($473k)

  4. ISC Work Breakdown Structure

  5. ISC Schedule Highlights

  6. ISC Major Milestones

  7. SubsystemInterfaces • Optical • Pre-stabilized Laser (PSL) • Input Optics (IO) • Mechanical • Optical tables • Vacuum penetrations • Electronic • PSL • Drive control of optical suspensions • Timing system for clocking for converters • RF Distribution System • Mode-cleaner (MC) Length • Data Acquisition (DAQ)

  8. ISC Cost by WBS ISC Cost Estimate in Base Year 2006 Dollars(Including Contingency)

  9. Subsystem Cost Estimating Basis • Cost estimating reliant on extrapolation from initial LIGO experiences due to custom nature of electronics • Wherever possible, representative quotes taken from industry • PCB manufacturing facilities (PCB Express) • Circuit board stuffing (Screaming Circuits) • Huntington Vacuum etc. for standard vacuum parts • Accuglass Vacuum connections • Estimates for LIGO designed electronics based on repackaging of existing designs wherever applicable • Travel • Estimated based on LIGO 1 experience and extrapolated complexity to Advanced LIGO

  10. ISC Staffing Profile

  11. ISC Risks and Concerns • In-vacuum Electronics • Thermal Management • Reliability • Ease of repair • Optical damage of photo-detector elements

  12. Safety Practices • Laser Safety • Laser safety practices will be in accordance with standing approved LIGO laser safety practices • Electrical Safety • Systems with hazardous electrical voltages such as photo-diode bias supplies will be designed and used in accordance with approved LIGO electrical standards and procedures

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