1. Jim Fast Pacific Northwest National Laboratory
WBS 1.02 iTOP Optics
Jim Fast
Pacific Northwest National Laboratory

2. James Fast, US Belle II Directors Review (Pre CD-2/3)
Talk Outline
WBS Element Scope
Performance Requirements
Cost Estimate
Schedule
Risk
Summary
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

3. James Fast, US Belle II Directors Review (Pre CD-2/3)
iTOP Modules
iTOP: imaging Time-Of-Propagation detector
US project is providing quartz optics (WBS 1.02)
Bars (1.25 m x 40 cm x 20 mm)
Mirrors to reflect light at far end of bars
Prisms to expand image on to photodetector plane
U. Nagoya is providing photodetectors and bar boxes
US project is providing readout electronics (WBS 1.03)
Integration will be done at KEK
US involvement in integration and commissioning funded through laboratory and university grants
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

4. James Fast, US Belle II Directors Review (Pre CD-2/3)
WBS 1.02 Scope
Scope of this WBS element
Specifications, procurement and acceptance test for quartz optics for the iTOP counters
Beam tests, cosmic ray tests and simulations to validate iTOP counter performance
Development of software tools for analysis of iTOP counter data
Preproduction of 4 sets of optics (OPC funds)
Production of 16 sets of optics (TEC funds)
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

5. Performance Requirements
This WBS is primarily delivery of iTOP optics
Performance requirements translate into detailed optics specifications
Developed and vetting with simulations and beam tests discussed in next talk
This WBS includes cosmic and beam tests of prototypes and modeling studies
Results of beam test in next presentation
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

6. James Fast, US Belle II Directors Review (Pre CD-2/3)
Bar Specifications
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

7. Quartz Vendor Evaluation
Early experience with bars raised concerns
Finished bars over 1 year late and under thickness
Added second bar vendor (Zygo) and increased prototyping in response to CD-1 and DOE Mini Review recommendations
Testing quality and production rates
Very good experience with Zygo and ITT
Optics meeting specifications
Deliveries have been on or near promised dates
Balance of prototypes due by end of February
Quantify what preproduction optics meet specs and can be used in experiment
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

8. CD-2/3 Cost Estimate – WBS 1.02
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3) 8

9. James Fast, US Belle II Directors Review (Pre CD-2/3)
Cost Basis of Estimate
Reasonable Cost Range
Make up of cost estimate
89% of cost is subcontract procurement of quartz material and fabrication of bars, mirrors and prisms.
Prototypes awarded represent 29.3% of total quartz cost
Engineering labor associated with prototype testing and final acceptance testing or optics, interface with mechanical and calibration systems development.
Maturity of the estimate
Fixed-price contract options for AOS bars and ITT mirrors represent 45.3% of remaining quartz costs
Estimated costs for other optics equal to qty=4 prototypes
Costs may be lower for larger production orders
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

10. James Fast, US Belle II Directors Review (Pre CD-2/3)
Schedule
In light of difficulties meeting original schedule for iTOP installation, Belle II management has decided to do a phased installation
>1/2 of iTOP installed on original schedule (February/March 2015)
Rest of iTOP will be assembled as optics arrive (through August 2015)
Full iTOP installation during summer shutdown (likely 2017)
Little impact on physics
Early physics run likely to be on Upsilon(3S) which relies less on iTOP
High luminosity operations of SuperKEKB delayed ~ 1 year
Driven by readiness of damping ring
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3) 10

11. Schedule Key drivers/constraints
CD-3 April 2014 to support quartz procurement plan
Delivery of >½ of quartz to support KEK installation date – Feb/Mar 2015
2011
2012
2013
2014
2015 B CR B CR B CR
Beam & Cosmic Tests
Preproduction Optics
Production Optics
CD-3
Module Assembly
Install & Commission
Periods shown are calendar years
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

12. James Fast, US Belle II Directors Review (Pre CD-2/3)
WBS 1.02 Risks
Major risks of WBS element 1.02
Quartz bar vendor has a production problem (e.g. can’t meet specs) and delivery of quartz is delayed. (Schedule & Cost)
Mitigation: Second bar vendor added
Significant prototyping done with rates commensurate with what is required in production to evaluate schedule and quality
Mechanical design does not mature enough to pass technical design review (Cost)
Risk retired
2012 Beam test is delayed because of availability of resources
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)

13. James Fast, US Belle II Directors Review (Pre CD-2/3)
Conclusion
Scope of WBS 1.02 well understood
Evidence - Specs validated by numerous reviews
Vendor prototypes meet specifications
Fixed-price contracts for ~1/2 of optics in place
Remaining optics costs based on prototype costs
Costs are known and fit within funding profile
Evidence – Costs defined by bid/vendor quote
Fits funding profile
Belle II schedule adjusted to be compatible with DOE funding and vendor production capabilities
Partial installation on original schedule Feb/Mar 2015
Remainder of modules scheduled for completion in Fall 2015
Ready for CD-2/3
16-17 January 2013
James Fast, US Belle II Directors Review (Pre CD-2/3)