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A Silicon vertex tracker prototype for CBM

A Silicon vertex tracker prototype for CBM. Material for the FP6 Design application. Compact tracking with Si-Sensors in CBM. Geometry of the SVT section 2 planes at 5 and 10 cm from the target inner diameter 11 mm only 10 9 beam particles per second

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A Silicon vertex tracker prototype for CBM

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  1. A Silicon vertex tracker prototypefor CBM Material for the FP6 Design application

  2. Compact tracking with Si-Sensors in CBM • Geometry of the SVT section • 2 planes at 5 and 10 cm from the target • inner diameter 11 mm only • 109 beam particles per second • Single event track densities up to 50 cm-2 CBM-STS CBM-SVT  100 cm2 SVT in vacuum

  3. Tasks of the tracking system • Momentum measurement for charged tracks with momentum resolution of O(1%) • Material budget • Track matching in high track density environment • Single track vertex resolution better 30 mm • High resolution tracking stations close to the target • Efficient recognition of electron pairs from p0 decays (Conversion, Dalitz) • reconstruction of incomplete tracks • highly efficient matching with PID detectors

  4. Technical challenge • High track density close to the target and at small angles • Mainly affects the pixel sensors • Fast readout • Event pile-up in case of MAPS • Radiation tolerance • Possibly high level of slow neutrons • Low mass design and mechanics • efficient cooling of sensors • detectors need to be moved during the runs

  5. Objective of the Design Proposal • Design and build a Silicon Vertex Tracker of geometry anticipated for the CBM with MAPS technology achievable in 2 years from now. • Study all aspects of such compact high resolution tracking devices with a full size prototype. • Aim at a fully operational device with a self triggered readout. • Relax conditions on radiation hardness and read-out speed. • Work out a detailed design for the complete tracking station of the CBM detector. • Optimize design with respect to: • vertex resolution • track finding efficiency • momentum resolution • material budget

  6. Taken from Mark Winteri, IReS"DESY PRC proposal" Substantial R&D already done

  7. Taken from Woijech Dulinski, LEPSI"Frontier Detectors for Frontier Physics" MAPS for Upgrades & Future Projects

  8. Project structure

  9. Project planning

  10. Cost

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