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

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

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

Wedge geometry SVT requirements

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

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

Bulkheads for mounting and cooling

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

Fingers

Jumper bus to z-side

Reason for calling them ladders Note folded cables

Assembled into barrels

Spacers to allow lid to close over cables

Ready to slide into ISL

…after some packaging

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

132 ns ? Rad-hard Longer Double-sided Trigger-able Recall Design goals

132 ns ? Rad-hard Longer ~ Double-sided Trigger-able Recall Design goals

132 ns ? Rad-hard Longer ~ Double-sided ~ Trigger-able Recall Design goals

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