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Detector module development for the CBM Silicon Tracking System Anton Lymanets for the CBM collaboration Universität Tübingen, Kiev Institute for Nuclear.

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Presentation on theme: "Detector module development for the CBM Silicon Tracking System Anton Lymanets for the CBM collaboration Universität Tübingen, Kiev Institute for Nuclear."— Presentation transcript:

1 Detector module development for the CBM Silicon Tracking System Anton Lymanets for the CBM collaboration Universität Tübingen, Kiev Institute for Nuclear Research KINR

2 STS terminology 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 2 station 1 station 2 station 4 station 6

3 Module concept 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 3 sensor 1024 strips 58 μm pitch microcable multilayer Module design is driven by the material budget and noise requirements. front-end board 8 chips with 128 channels each To be mounted support structures carbon fibre 05.03.2013

4 Sensor + cable 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 4 1024 strips ± 7.5 stereo angle 58 μm strip pitch (62 62) mm 2 size Multi-layer cable mock-up Cable structure Wide cable is to be connected to a sensor Kapton mesh Kapton Al

5 Sensor + cable interconnection 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 5 Daisy-chained sensors Sensor-to-cable connection Mechanical and handling study Experience: alignment of a cable with 1024 strips is difficult! Connection technology: TAB bonding L-shaped legs for sensor mounting Manufactured in Kharkiv (SE SRTIIE) Talk: M. Singla HK 35.7

6 Sensor + cable prototypes 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 6 See: T. Balog HK 35.8 Performance evaluation of a module prototype Compatible with current n-XYTER front-end boards with ERNI connectors 30 cm Goal: demonstrate the cable concept, TAB bonding, long cables 2 128 channels (double-sided readout) Different lengths

7 New module assembly concept Many narrow cables (128 channels each) Same multi-layer structure Mitigate alignment, yield and testability risks 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 7

8 Sensor quality assurance Visual inspection Electrical characterization Current-voltage Capacitance-voltage behavior Interstrip parameters: resistance and capacitance Channel yield (coupling capacitors, PN-junctions) Double-metallization Shorts and breaks 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 8 1300+ double-sided sensors have to be tested: probe station, long term stability, etc…

9 Front-end electronics 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 9 FEE prototype base on n-XYTER chip STS front-end board concept STS-XYTER chip 8 chips (128 channels each) Chips are wire-bonded to the PCB Readout chips have to be tested individually before FEB assembly.

10 Module assembly steps 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 10 Tested chip + tested cable Readout test only after full assembly every component has to be tested Need quality assurance, logistics and tooling for module production TAB bond both sensor sides using fixtures (non-reworkable) Nest chips in a FEB, Wire bond to the PCB

11 Low-mass support structures 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 11 Mechanical study: carbon fibre support ultra-light: mass 14 g/m mechanical precision within 100 μm maximal rigidity

12 Summary Module hierarchy developed Quality assurance tasks Sensors Cables Front-end-electronics Tooling and procedures are under development Fixtures for quality assurance and module assembly Quality assurance for >1000 modules will be required QA sites in Germany (GSI, Tuebingen) and Russia (Dubna) 05.03.2013 A. Lymanets - Detector module development for the CBM STS - DPG Dresden 2013 12

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