SVX-II

1. SVX-II David Stuart, UC Santa Barbara May 11, 2006

2. Outline • Why • What • How Many details in following talks, so I’ll just review the design goals and then give a tour of the detector and its construction.

3. Design goals • 132 ns • Rad-hard • Longer • Double-sided • Trigger-able The first 2 were required (well thought to be, vs 396 ns). The rest were desired. The last was critical for Bs mixing, and it drove the design.

4. SVT requirements • Wedge geometry

7. SVT requirements • Wedge geometry • Precision alignment during construction • r and z

11. SVT requirements • Wedge geometry • Precision alignment during construction • r and z • Fast, deadtime-less readout • See Ankush’s SVX3D talk Now, I’ll describe the detector with a photo tour.

12. Bulkheads for mounting and cooling

13. Layer 1 Quarter Ladder SVXII Ladders Thermal bridge Mounting tab BeO Hybrid glued to silicon HDI, with LV boost wires Finger and jumper on next page

14. Fingers

15. Jumper bus to z-side

16. Reason for calling them ladders Note folded cables

17. Assembled into barrels

25. Spacers to allow lid to close over cables

27. Ready to slide into ISL

28. …after some packaging

29. Recall Design goals • 132 ns • Rad-hard • Longer • Double-sided • Trigger-able

30. Recall Design goals • 132 ns  ? • Rad-hard  • Longer • Double-sided • Trigger-able

31. Recall Design goals • 132 ns  ? • Rad-hard  • Longer ~ • Double-sided • Trigger-able

32. Recall Design goals • 132 ns  ? • Rad-hard  • Longer ~ • Double-sided ~ • Trigger-able

33. Recall Design goals • 132 ns  ? • Rad-hard  • Longer ~ • Double-sided ~ • Trigger-able  ! !