Transcript homogeneity of the index of refraction for the samples from boules

iTOP Quartz Procurement Status
James Fast
Pacific Northwest National Laboratory
PNNL-SA-89254
High Level View
• Bars
– Contract in place for full production
– 10 blanks already produced and “delivered” (US-J funded)
• Up to 8 more will be ordered with US-J FY12 funds
– 2 polished bars ordered – delivery ~December (DOE $$)
• Mirrors
– Specifications settled – tilted mirror, 100 mm long
– Nagoya has ordered prototype – due any day
– PNNL issuing RFP for another prototype now (DOE $$)
• Prisms
– Specifications less settled, but time to prototype
– PNNL issuing RFP for prototype “option 5” design (DOE $$)
• 5 mm flat at bottom of prism at PMT end for seal surface
23 July 2012
James Fast, July 2012 B2GM
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Outstanding Optics R&D
• Finalize mechanical design for quartz bar box to set final
specifications for quartz prism
– Many details in and around the prism/readout interface region that
need to be finalized and tested before prism production
• Outstanding issues for the mirror
– Tilted mirror looks good, but some concerns remain
• Mechanics of applying spring load in –Z direction on tilted surface
• Reconstruction algorithms for continuum of impact positions, momenta and
angles has not been demonstrated and may be more difficult for the tilted
mirror design
• Analyzed data with final optics will be needed for DOE
approval for production
– Earliest reasonable date for building prototype with final optics is
around December
• DOE is working with us to relieve “CD approval” pressure on the
production of the optics
– Schedule is still tight, but we have some relief in early U.S. FY13
23 July 2012
James Fast, July 2012 B2GM
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Schedule
• Key drivers/constraints
– CD-3b and passing of FY13 Energy and Water bill required to start production
– Delivery of iTOP System to support KEK installation date – Feb 2015
• Increasing preproduction prototyping (time and quantities of optics)
2011
Beam & Cosmic Tests
2012
B
CR
2013
B
B
2014
2015
CR
Preproduction Optics
Production Optics
CD 3b CD 3b
CD 4
Module Assembly
Install & Commission
Periods shown are calendar years
23 July 2012
James Fast, July 2012 B2GM
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Changes to Plan
• DOE increased budget $1M to help us
• Additional prototypes
– 2 bars, 2 mirrors and 2 prisms added to plan
– plan to engage a second bar vendor for one prototype to
mitigate risk
• Had direct measurement of quartz homogeneity made
to validate material
– Not measured by Corning for our grade of material –
certified “by process control”
– Results were excellent and are being used to tune process
for removal of stress birefringence from cutting of blanks
23 July 2012
James Fast, July 2012 B2GM
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Homogeneity Measurements
• Conducted by Aperture Optics
• Samples cut from same boules as bars
• Sized to be usable as mirror blanks
“homogeneity of the index of
refraction for the samples
from boules 53201 and 52202
were well within the 5 ppm
specification at 1.44 ppm and
3.17 ppm, respectively”
23 July 2012
James Fast, July 2012 B2GM
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Summary
• Quartz bars are well underway
– First prototypes made to final specifications will arrive at KEK at the
end of the year
• Mirror and prism prototypes are underway
– More work is required to commit to design
• Simulations and analysis over full iTOP fiducial volume
• Demonstration of a prototype with the final optics
• Completion of interfaces to readout and QBB
• DOE has been proactive in helping the project continue to progress
in light of the review process and in anticipation of a continuing
resolution in FY13
– Project passed a major milestone with the independent project review
for CD-1: recommended for approval of CD-1 by ESAAB which should
occur in August.
– CD-3A for KLM module production also “blessed” by that review
23 July 2012
James Fast, July 2012 B2GM
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BACKUP
Procurement Strategy
• Request for Interest for all three optics (July 2011)
– Preliminary specifications developed for RFI
– Vendors asked to comment on what specifications would be
cost drivers or challenging to meet
– Vendors to consider both fabrication and metrology challenges
– Vendors to provide proposed delivery schedule with information
on fraction of production capability to be used
• Contracting strategy is to use competitive, fixed price
contracts with award based on total cost for full production
– Minimize total cost (avoids low-balling initial phases)
– Reduce cost/schedule uncertainty early in the project
• Risk remains, but is quantifiable using responses of all vendors
– Consideration taken for utilizing multiple vendors to reduce risk
• Weighed against additional costs (if any) of doing so
• Limited FY12 funding and high unit cost makes this difficult this year
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James Fast, July 2012 B2GM
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Potential Vendors Identified
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Aperture (Okamoto partner with mirror/prism capability in US)
Heraeus (PANDA DIRC prototypes)
InSync (was Boeing, Babar DIRC, PANDA DIRC prototypes)
ITT Geospatial Systems
Lyktorino LZOS (PANDA DIRC prototypes)
Optical Solutions Inc. (mirrors/wedges only)
Schott (PANDA DIRC prototypes)
Zygo (interested in bars only at RFI; recently purchased new
capability that may be able to fabricate mirrors and prisms)
PANDA DIRC group is also discussing bars with Zygo and Zeiss
23 July 2012
James Fast, July 2012 B2GM
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Bar Contract Structure
• Contract award based on total cost for full production
– Goal: Reduce uncertainty in Cost and Schedule
• Contract issued as “firm fixed price” for the entire production
of Quartz Bars (32+4 spares)
– Initial award
• Phase I – 8 quartz blanks (US-J FY11)
• Phase IIa – 2 quartz blanks (US-J FY11)
– Subsequent phases and notional funding sources
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23 July 2012
Phase IIb – 4 polished bars (DOE FY12)
Phase III – 8 quartz blanks (US-J FY12)
Phase IVa – 10 quartz blanks (DOE FY13)
Phase IVb – 16 polished bars DOE FY13)
Phase Va – 8 quartz blanks (DOE FY14)
Phase Vb – 16 polished bars (DOE FY14)
James Fast, July 2012 B2GM
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Prisms and Mirrors
• Specifications not yet finalized by B-PID group
– Prism – ready to finalize specifications, proceed to RFP
– Mirror – optimal radius and tilt under investigation
– Require same material as bars (Corning – class 0, grade F)
• Procurement Strategy
– Separate RFPs for Prisms and Mirrors
– Quantity: Preproduction (2) with DOE FY12 funds
Production (16) starting with DOE FY13
• Schedule assumed in WBS for both Wedges and Mirrors
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Finalize Specifications – March 2012 (actual June 2012)
Issue RFP – April 2012 (actual July 2012)
Award Contract – May 2012 (expected September 2012)
Receive First/Last – June 12/Nov 13
23 July 2012
James Fast, July 2012 B2GM
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DRAFT Prism Specifications
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James Fast, July 2012 B2GM
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DRAFT Mirror Specifications
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James Fast, July 2012 B2GM
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