Download SEI Structure Development - LIGO

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
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AOS Description & Deliverables
$9.04M
AOS is responsible for procuring, assembling, and testing:
change

Stray Light Control
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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
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$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
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$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
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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.
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Optical Lever
$1.01M
» New Optical Lever Transmitter & Receiver (insensitive to mirror
displacement) for all suspended optics, additional piers
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Photon Calibrator
$1.07M
» Provide known impulse to ETM mirror for calibration, using external
radiation pressure
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Output Mode Matching Telescope
$0.83M
» Procure Mirrors for suspended beam reducing telescope--dark port
GW signal
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Viewports
$0.39M
» Procure Viewports for: IFO sensing beams, Video camera, chamber
illum, optlev, TCS (Zn Se)
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AOS is complete when all the elements are ready for installation
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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
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AOS Schedule Highlights
New
• AOS is not on critical path
• Schedule is driven by need to optimize resource use
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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
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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
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23-Dec-08
12-Jul-10
15-Feb-11
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AOS Cost Estimating
Changed
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Used the same standardized cost estimating approach used for initial LIGO
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Initial LIGO history & updated quotes used for labor/material cost basis of
most items
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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.
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AOS Cost to WBS Level 5
Need a new slide
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AOS Cost to WBS Level 6–
Need a new slide
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AOS Cost Book Details
Need a new slide
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Detailed cost book information is available on Project website
» http://www.ligo.caltech.edu/~advligo/aos/aos_current_cost_est.pdf
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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.
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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
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AOS Response to Review Panel Recommendations
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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.”
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Recommendation: “The Panel encourages the design of the compensation
plates.”
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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.”
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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.
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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
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0.5
0.7
10.2
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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
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AOS Test Plans
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Initial Alignment System
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Thermal Compensation System
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Mostly pre-tested in initial LIGO, new zoom lens design prototyped in 2004
Viewports
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Standalone test during preliminary design phase
Optical Levers
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Prototype tests during preliminary design phase
Photon Calibrator
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BRDF (scattering) measurements of critical materials
Pickoff Mirrors, ETM Telescope, and Faraday Isolator SUS
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Full sensor-compensator test planned for LASTI in 2008-9
Additional testing will be done in Enhanced LIGO
Stray Light Control
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Similar to initial LIGO, no additional testing needed
Very basic elements, no test needed
Output Mode-Matching Telescope
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Identical to Input Mode-Matching Telescope, without adaptive elements—will use
IO test results
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