1 / 12

Belle II Silicon Vertex Detector

Belle II Silicon Vertex Detector. Your Name (Your Institute). Generic Slides. Belle II. Belle II SVD Layout. Geometry optimization is underway New central pixel double-layer using DEPFET Strip layers extend to r~14 cm

cleave
Download Presentation

Belle II Silicon Vertex Detector

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Belle II Silicon Vertex Detector Your Name (Your Institute) Generic Slides Belle II

  2. Belle II SVD Layout • Geometry optimization is underway • New central pixel double-layer using DEPFET • Strip layers extend to r~14 cm • Every sensor read out individually(no ganging) to maintain good S/N  chip-on-sensor concept 4 layers of double-sided strip sensors Double-layer of DEPFET pixels Your Name

  3. Origami – Chip-on-Sensor Concept • Chip-on-sensor concept for double-sided readout • Flex fan-out pieces wrapped to opposite side (hence “Origami“) • All chips aligned on one side  single cooling pipe Side View (below) Your Name

  4. Origami Module with 6” HPK DSSD Your Name

  5. Sketch of the Outermost Ladder (Layer 6) • Center sensors have Origami structure, edge sensors are read out from sides • Averaged material budget over the full module: 0.58% X0 ca. 60cm Your Name

  6. Carried by ribs made of carbon fiber and Airex foam Very stiff, yet lightweight thanks to the sandwich construction Ladder Mechanics Cooling Pipe Sensor Support Ribs Your Name

  7. CO2 Cooling • Open (blow) system operated from a CO2battery exists • Stable operation at ~1 g/s mass flow for several days achieved during 2011 beam test at CERN • Front-end temperature -16°C (Origami modules) Your Name

  8. Readout System • Prototype readout systemexists • Verified in several beam tests • Basis for future SVD system shown below Your Name

  9. Prototype Readout System Repeater Box Level translation, buffering FADC+PROC (9U VME) Digitization, zero-suppression, hit time reconstruction Your Name

  10. Finesse Transmitter Board (FTB) • Sends FADC data through optical link to • COPPER • Pixel system (Giessen box) • First boards are now being tested • Firmware to be developed Your Name

  11. Occupancy Reduction Your Name

  12. Origami Module (TDC error subtracted) Measured Hit Time Precision • Results achieved in beam tests with several different types of Belle DSSD prototype modules (covering a broad range of SNR) • 2...3 ns RMSaccuracy at typical cluster SNR(15...25) • Working onimplementationin FPGA (using lookup tables) – simulationsuccessful Your Name

More Related