SVXII David Stuart UC Santa Barbara May 11
SVX-II David Stuart, UC Santa Barbara May 11, 2006
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.
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.
SVT requirements • 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 SVX 3 D talk Now, I’ll describe the detector with a photo tour.
Bulkheads for mounting and cooling
SVXII Ladders Layer 1 Quarter Ladder Mounting tab Thermal bridge Be. O Hybrid glued to silicon 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
L Read o IS t n i e id l s o t y
…after some packaging
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 • 132 ns ? • Rad-hard • Longer ~ • Double-sided ~ • Trigger-able ! !
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