Interferometer Sensing and Control ISC Cost and Schedule

Interferometer Sensing and Control (ISC) Cost and Schedule Breakout Presentation NSF Review of Advanced LIGO Project Richard Abbott CIT April 5, 2006 LIGO-G 060210 -B-M

ISC Description & Deliverables l At a Total Cost of $8. 04 M, the ISC system provides the hardware and software for: » Sensing and controlling interferometer length – – – – – Radio Frequency (RF) detectors 4. 1 ($272 k) RF Readout Chain 4. 2 ($184 k) RF Signal Source 4. 3. 4 ($162 k) ISC Signal Conditioning Electronics 4. 3. 2 ($335 k) Real-time Processing & Networking 4. 3. 1 ($479 k) ISC Analog-to-digital Converters (ADCs) 4. 3. 3 ($661 k) Real-time Software 4. 4 ($433 k) Diagnostic and Supervisory Software 4. 5 ($319 k) Seismic Platform Interferometer 4. 9 ($580 k) » Optical Alignment systems – Alignment Sensing & Control (ASC) detectors ($515 k) – ASC RF Demodulation 4. 3. 5 ($200 k) – Video Monitoring System 4. 6. 2 ($403 k) April 5, 2006 LIGO-G 060210 -B-M 2

ISC Description & Deliverables (cont. ) » Readout signals used to search for gravity waves – DC Readout detectors ($144 k) – ISC Sensing Tables 4. 6. 3 ($1. 336 M) – Output Mode Cleaner 4. 7. 1 ($306 k) » Reconfiguring parts of the vacuum envelope ($743 k) – Vacuum Detection Infrastructure 4. 8 ($743 k) » Fabrication Testing and Validation 4. 7 ($497 k) » ISC Management 1 ($472 k) l In Process Spares included in deliverable costing April 5, 2006 LIGO-G 060210 -B-M 3

ISC Work Breakdown Structure (WBS Dictionary Available at http: //www. ligo. caltech. edu/~advligo/isc_current_wbs. pdf) April 5, 2006 LIGO-G 060210 -B-M 4

ISC Cost by WBS April 5, 2006 LIGO-G 060210 -B-M 5

ISC Schedule Highlights April 5, 2006 LIGO-G 060210 -B-M 6

ISC Staffing Profile April 5, 2006 LIGO-G 060210 -B-M 7

ISC Major Milestones April 5, 2006 LIGO-G 060210 -B-M 8

Subsystem Cost Estimating Basis l 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 l Estimates for LIGO designed electronics based on repackaging of existing designs wherever applicable l Travel » Estimated based on LIGO 1 experience and extrapolated to Advanced LIGO complexity April 5, 2006 LIGO-G 060210 -B-M 9

ISC Risks and Concerns l Staffing availability » Schedule assumes personnel familiar with LIGO designs » Possible mitigation in improved standards for documentation and written processes » Training of personnel to expand their roles » Use of outside testing facilities l Quality Control » Historically, this is a point of weakness » Efforts to mitigate include – Better test procedures – Use of unbiased outside testing facilities – Better peer review process April 5, 2006 LIGO-G 060210 -B-M 10

Safety Practices l Laser Safety » Laser safety practices will be in accordance with standing approved LIGO laser safety practices l Electrical Safety » Systems with hazardous electrical voltages such as photodiode bias supplies will be designed and used in accordance with approved LIGO electrical standards and procedures April 5, 2006 LIGO-G 060210 -B-M 11