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ATLAS Pixel Sensors Sally Seidel University of New Mexico U.S. ATLAS Pixel Review

ATLAS Pixel Sensors Sally Seidel University of New Mexico U.S. ATLAS Pixel Review UCSC, 18 July 2002. CiS Schedule CiS production sensor delivery schedule for 1000 tiles, as specified in the contract: 25%: 30 April 2002 50%: 28 February 2003 75%: 31 March 2003 100%: 30 April 2003

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ATLAS Pixel Sensors Sally Seidel University of New Mexico U.S. ATLAS Pixel Review

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  1. ATLAS Pixel Sensors Sally Seidel University of New Mexico U.S. ATLAS Pixel Review UCSC, 18 July 2002

  2. CiS Schedule • CiSproduction sensor delivery schedule for 1000 tiles, as specified in the contract: • 25%: 30 April 2002 • 50%: 28 February 2003 • 75%: 31 March 2003 • 100%: 30 April 2003 • Revised production schedule as communicated to CERN in May 2002: • 25% : 28 June 2002 • 100%: 30 November 2002 • Revised information communicated to CERN in June 2002: • 12%: mid-July 2002 • Present status: • 30 good wafers delivered on May 14. • 0% yield subsequently, with cause unknown.

  3. Tesla Schedule • Teslaproduction sensor delivery schedule for 1000 tiles, as specified in the contract: • 10%: 15 weeks after start of production • 25%: 25 weeks • 40%: 35 weeks • 55%: 45 weeks • 70%: 55 weeks • 85%: 65 weeks • 100%: 75 weeks • Present status: • Contract for production has not been signed. “Second pre-production” is in fabrication. • 12 wafers delivered in early June passed QA tests. Fabrication halted until noise problems in irradiated assemblies are understood.

  4. Testing Schedule • Applying the linear Tesla delivery schedule of 60 wafers every 10 weeks to both vendors predicts delivery of about 3 wafers/week/institute. • Wafer shipment from vendor to CERN to institute typically takes 14 days. • Characterization typically requires • 8 hours per wafer + setup • one 15-hour test on one tile per batch • data validation and upload to PDB. • Conclusion: with adequate support for personnel, testing should proceed at the same rate as fabrication, with schedule offset by about 3 weeks.

  5. Costs CiS production: 451.03 kChF = $282k Tesla production: 246.6 kChF = $154k UNM will characterize 25% of production wafers. UNM request for FY03: 0.5 FTE student tech: $12k 0.75 FTE engineer: $53k Materials and supplies: $ 3k Travel: $ 8k Indirect cost: $20k total: $96k

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