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Auxiliary Optics System (AOS) Cost and Schedule Breakout Presentation NSF Review of Advanced LIGO Project Mike Smith, Phil Willems CIT Apr 24, 2007 LIGO-G070264-00-D change AOS Description & Deliverables $9.04M AOS is responsible for procuring, assembling, and testing: change Stray Light Control » » » » » Beam Dumps and Baffles for ghost beams Arm Cavity Baffle for small angle scattered light, ITM, ETM Errant Beam Baffles to protect SUS fibers Attenuators for PO beams Output Faraday Isolator Thermal Compensation » » » $1.96M Ring Heaters for recycling & arm cavity mirrors CO2 Laser, shaped heating beam for ITM Wavefront probe/sensor optical system for all COC mirrors PO Mirror & Telescope » » » $0.66M change $2.76M Suspended PO Mirror to extract BS & ITM PO beam for IFO alignment control Non-suspended beam-reducing telescope and steering mirrors Suspension for existing ETM Telescope Apr 24, 2007 LIGO-G070264-00-D 2 AOS Description & Deliverables-cont No Significant Change Initial Alignment System $0.14M » Replace or upgrade existing surveying equipment Visible & IR laser autocollimator, theodolite, optical square, etc. Optical Lever $1.01M » New Optical Lever Transmitter & Receiver (insensitive to mirror displacement) for all suspended optics, additional piers Photon Calibrator $1.07M » Provide known impulse to ETM mirror for calibration, using external radiation pressure Output Mode Matching Telescope $0.83M » Procure Mirrors for suspended beam reducing telescope--dark port GW signal Viewports $0.39M » Procure Viewports for: IFO sensing beams, Video camera, chamber illum, optlev, TCS (Zn Se) AOS is complete when all the elements are ready for installation Apr 24, 2007 LIGO-G070264-00-D 3 AOS Work Breakdown Structure Unchanged WBS for “Subsystem” is organized by sub-component; or by major subsystem and then by category of equipment; or by subcomponent and then by phase – procure, assemble subassemblies, integrate, and test. WBS WBS Description LIGO.4 Advanced LIGO LIGO.4.07 Apr 24, 2007 LIGO-G070264-00-D Auxiliary Optics (AOS) LIGO.4.07.1 AOS Subsystem Management LIGO.4.07.4 AOS Fabrication LIGO.4.07.4.1 AOS Stray Light Control Fabrication LIGO.4.07.4.2 AOS Thermal Compensation System (TCS) Fab LIGO.4.07.4.5 AOS PO Mirror Assembly and Telescope Fabrication LIGO.4.07.4.6 AOS Initial Alignment System (IAS) Procure/Fab LIGO.4.07.4.7 AOS Optical Lever System (OptLev) Procure/Fab LIGO.4.07.4.8 AOS Photon Calibrator Fab LIGO.4.07.4.9 AOS Output MMTEL LIGO.4.07.4.A AOS Viewports 4 AOS Schedule Highlights New • AOS is not on critical path • Schedule is driven by need to optimize resource use Apr 24, 2007 LIGO-G070264-00-D 5 AOS Detailed Schedule Need new slide with 1-2 mo schedule slip Detailed schedule is available on Project website » http://www.ligo.caltech.edu/~advligo/aos/aos_current_progsched.pdf Apr 24, 2007 LIGO-G070264-00-D 6 AOS Milestones/Interfaces Unchanged Activity ID Activity Description Early Start Early Finish AO-M540732 AOS PD: Prelim. Design Phase Complete 10-Mar-08 AO-M540733 AOS FD: Final Design Phase Complete 22-Dec-08 AO-M59750 AOS FAB: AOS Production Begins AO-M59890 AOS FAB: IAS Procure / Fab Complete 26-Apr-10 AO-M59910 AOS FAB: Photon Calibrator Complete 12-May-10 AO-M59900 AOS FAB: Optical Lever Sys. Fab Complete 22-Jun-10 AO-M59800 AOS FAB: Thermal Compensation System Complete 29-Jun-10 IN-M00030 INS FM IFO1: Shutdown & Begin Removal/Install AO-M59930 AOS FAB: IFO1 Complete 21-Jul-10 AO-M59790 AOS FAB: Stray Light Control Fab Complete 23-Jul-10 AO-M59880 AOS FAB: PO Mirror Fab & Tele. Ass'y. Complete 25-Oct-10 AO-M59940 AOS FAB: IFO2 Complete 11-Nov-10 IN-M00035 INS FM IFO2/3: Shutdown & Begin Removal/Install AO-M59950 AOS FAB: IFO3 Complete 15-Mar-11 AO-M50030 AOS: Auxiliary Optics Subsystem Finish 15-Mar-11 Apr 24, 2007 LIGO-G070264-00-D 23-Dec-08 12-Jul-10 15-Feb-11 7 AOS Cost Estimating Changed Used the same standardized cost estimating approach used for initial LIGO » » Initial LIGO history & updated quotes used for labor/material cost basis of most items » » » » Contingency analysis enhanced by Monte Carlo simulation based on risk assessment. Contingency estimate: see below* Historical costs were validated with new quotations New quotations for parabolic telescope/PO mirrors Materials scaled by increased beam size as appropriate Commissioned CO2 laser TCS recosted Prototype cost basis for optical lever receiver and Hartmann sensors Engineering cost estimate for TCS ring heaters PO mirror suspension engineering estimate based on quad SUS prototype * For LIGO estimating, contingency was first estimated using a standard qualitative process to assign risk factors at the activity level for technical and procurement risk and at the WBS level for schedule risk. The additional risk factor resulting from the Monte Carlo analysis was added at the subsystem level. When you look at the cost book detail, the individual cost items have the same contingency value, even though we listed whether the estimate is a vendor quote or an engineering estimate. This is because the risk factors were evaluated at the activity level, not at the individual cost item. Apr 24, 2007 LIGO-G070264-00-D 8 AOS Cost to WBS Level 5 Need a new slide Apr 24, 2007 LIGO-G070264-00-D 9 AOS Cost to WBS Level 6– Need a new slide Apr 24, 2007 LIGO-G070264-00-D 10 AOS Cost Book Details Need a new slide Detailed cost book information is available on Project website » http://www.ligo.caltech.edu/~advligo/aos/aos_current_cost_est.pdf Apr 24, 2007 LIGO-G070264-00-D 11 AOS Estimate Changes Need a new slide Revision AOS cost change as of 4/11/07 to the following: 4.07.4.1.1 38,746 increase (using a LOS to suspend the Faraday isolator instead of a SOS) 4.07.4.5.1 1,516,752 (an increase of 612,736 occurred because the ITMX PO mirror will be suspended like the BS PO mirror, which requires a double pendulum ) 4.07.4.5.2 18,081 (this is a first article PO Telescope housing that won't be reused, and was left off the cost sheet) 4.07.4.9 293,224 (slight cost reduction due to updated costs for mirrors) 4.07.4.A 333,011 (correction to match the figure on my 1/22/07 spreadsheet) The updated total equipment cost will be 5,537,119 (an increase of 523,914 over what is shown in slide 10) Replace these notes with a new note explaining the net decrease figure (was 1003735)—decrease due to change in quantity, increase due to suspending ITMX PO mirror, decrease due to using spherical mirror for BSPO telescope instead of parabolic mirrors. Apr 24, 2007 LIGO-G070264-00-D 12 Changes in Scope Since June 2006 Dwight move the costed items Suspend Output Faraday Isolator with modified LOS SUS Suspend Cryopump Baffle Suspend Cavity Beam Dumps from BSC Optics Table Suspend Arm Cavity Baffles from BSC Optics Table Suspend ITM Elliptical Baffles from BSC Optics Table TCS Ring Heaters removed from compensation plates, installed on Test Masses Errant Baffles, MC baffles costs moved to IO Cameras and costs moved from ISC to AOS Apr 24, 2007 LIGO-G070264-00-D 13 AOS Response to Review Panel Recommendations Recommendation: “The Panel encourages continuing the effort to improve TCS including a sensing method since it seems to be an effective way to control overall mode quality in the system. It provides a way to mitigate the parametric instability, the impact of which on the overall system is still not known.” » Recommendation: “The Panel encourages the design of the compensation plates.” » We have selected the Adelaide Hartmann sensor for Advanced LIGO TCS and incorporated it into the baseline design. Thermal control of parametric instability is currently under theoretical and experimental research at Gingin. We have a baseline CP design, and have ordered a prototype to install at LASTI as part of an overall TCS test. Recommendation: “The Panel encourages continuing the effort to qualify a second vendor for the parabolic mirrors.” » We have qualified a second vendor, Tydex, J. S. Co. of Saint Petersburg, Russia. Given their high quality and low price they are now our primary vendor. Apr 24, 2007 LIGO-G070264-00-D 14 AOS Staffing Profile New RESOURCE Engineer / Sr. Technician FY 2008 FY 2009 1.9 Post-Doctoral Fellow Scientist FY 2010 FY 2011 FY 2012 FY 2013 FY 2014 FY 2015 TOTAL FTE YRS 4.5 0.3 6.7 0.2 0.2 0.4 0.3 0.3 Sr Engineer 0.4 0.6 0.1 1.1 Sr Scientist 0.1 1.0 0.1 1.2 Technician 0.2 0.3 TOTAL 2.6 6.9 Apr 24, 2007 LIGO-G070264-00-D 0.5 0.7 10.2 15 AOS Risks and Concerns Unchanged Cost/Schedule increase/delay--absorption in the core optics may be anomalous » may need higher power TCS heating » may need to develop a scanning heater design as a backup Cost/Schedule increase/delay- -acoustic parametric instability » make TCS more flexible to handle both API and thermal lensing Apr 24, 2007 LIGO-G070264-00-D 16 AOS Test Plans Initial Alignment System » Thermal Compensation System » » Mostly pre-tested in initial LIGO, new zoom lens design prototyped in 2004 Viewports » Standalone test during preliminary design phase Optical Levers » Prototype tests during preliminary design phase Photon Calibrator » BRDF (scattering) measurements of critical materials Pickoff Mirrors, ETM Telescope, and Faraday Isolator SUS » Full sensor-compensator test planned for LASTI in 2008-9 Additional testing will be done in Enhanced LIGO Stray Light Control » Similar to initial LIGO, no additional testing needed Very basic elements, no test needed Output Mode-Matching Telescope » Identical to Input Mode-Matching Telescope, without adaptive elements—will use IO test results Apr 24, 2007 LIGO-G070264-00-D 17