Preliminary thoughts on SVT services What we have in the present BaBar SVT What we might need for SuperB SVT Giuliana Rizzo INFN and University, Pisa SuperB Workshop Perugia, June 16-20 2009 G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SVT Services - Perugia, June 18. 2009 SuperB SVT Baseline SuperB SVT  similar to the BaBar SVT (5 Layers) + Layer 0 Layer 0 technology: striplets or pixels (it could be a double layer) Each SVT layer is built of independent “modules” (52+8x2) Each module has 2 independent “half-modules” (FW/BW side) Sensor, front-end chips, HDI with power/signal in and data out link Front-end electronics require cooling: cooling pipes for each layer SVT requires a dry stable environment: dry air/nitrogen pipe for each side Humidity pipes politube SVT Services to the IR (same for FW/BW side) 52x(2 power+1 signal) “front cables” + Layer0 4 in + 4 out cooling pipes + Layer0 2 pipes humidity sampling and regulation Caables for radiation and position monitor G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SVT Services - Perugia, June 18. 2009 BaBar SVT Front Cables MUX crate Off detector SVT front cables (same for FW/BW side): 52 (HM) x3 cables – 7.42 mm d. 2 power (p+n side) + 1 signal cables: Belden 12 1/2 pairs 24 AWG  flexible cable with small diameter, voltage drop < 0.5 V ~ 20 m long splitted in two parts connected via Burndy connector. The two cable parts have to be disconnected at their Burndy connectors for the endcap to be withdrawn and during the SVT/beam pipe insertion/removal G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

Details of the BaBar white cables G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SVT Services - Perugia, June 18. 2009 Insert picture from Bill talk G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

Space Frame and Support Cones BaBar has 4 brass cooling rings for the HDI’s L1&L2 share the same cooling ring 4 ingoing cooling pipes + 4 outgoing cooling pipes goes to the IP Splitted inside the ST to 4+4 in & 4+4 out SVT is splitted in two halves for mounting 4+4 outgoing cooling pipes 4+4 ingoing cooling pipes G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SVT Services - Perugia, June 18. 2009 BaBar SVT Support Brass cooling rings Carbon fiber Space Frame 4 cooling pipes for inlet 4 cooling pipes for outlet 22 cm B1 dipole permanent magnet (inside support cone) B1 dipole permanent magnet (inside support cone) Carbon fiber support cones 109 cm Transition card location G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SuperB Interaction Region Schematic SVT superimposed Possible location of SVT Transition cards G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

First thoughts on services for SuperB-SVT Layer 0 Half-Module current significantly higher than for BaBar module.(x5 worst case) BaBar HM (p+n side) Ianalog=1.2 A, Idigi=1.2 A handled with 2 power cables 7.42 mm diam. each Layer0 HM with Hibrid pixels: Idigi=6 A, Ianalog=70 mA (=BaBar X 2.5) Layer0 HM with MAPS even worse Idigi=6 A, Ianalog=6 A (= BaBar x 5) For Layer 0 need larger cables or more power cables/HM DC-DC converter to reduce power constraints on cables? Signal cables might be replaced by optical link, especially in Layer0 where a fast link is needed between HDI and DAQ board (20 Gbit/s – 3 Gbit/s) No big impact in cable dimensions ? Might have an impact on power consumption at the transition card Cooling pipes + 2 (in+out) for Layer0 Additional cooling might be required at the transition card location (optical link) Need to define location for transition card: different w.r.t BaBar matching cards (passive) have optical link on,board need to be in a relatively soft radiation area (30-50 cm from SVT) G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SVT Services - Perugia, June 18. 2009 backup G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SVT Services - Perugia, June 18. 2009 SVT cooling pipes Silicon wafers Carbon & Kevlar fiber support ribs G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SVT Services - Perugia, June 18. 2009 The SVT consists of ~150000 channels 1188 chips 208 readout sections 104 half-modules, or 104 HDIs 52 HDI-Link cards 28 DAQ-Link cards 14 ROMs G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

BaBar SVT Data Transmission HDI: High Density Interconnect. Mounting fixture and cooling for readout ICs. Kapton Tail: Flexible multi-layer circuit. Power, clock, commands, and data. Matching Card: Connects dissimilar cables. Impedance matching. HDI Link: Reference signals to HDI digital common. DAQ Link: Multiplex control, demultiplex data. Electrical -- optical conversion. The BaBar SVT consists of ~150K channels 1188 chips 104 half-modules, or 104 HDIs Double sided 208 readout sections (ROS) 52 HDI-Link cards 28 DAQ-Link cards 14 ROMs Front Cables HDI Matching Card Kapton Tail Si Wafers Link DAQ Power Supplies MUX Back Fiber Optic to DAQ On Detetctor Off Detetctor G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009

SVT Services - Perugia, June 18. 2009 G. Rizzo-SuperB Workshop SVT Services - Perugia, June 18. 2009