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26 June 2001VELO-Overview VELO Overview T. Bowcock University of Liverpool.

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Presentation on theme: "26 June 2001VELO-Overview VELO Overview T. Bowcock University of Liverpool."— Presentation transcript:

1 26 June 2001VELO-Overview VELO Overview T. Bowcock University of Liverpool

2 26 June 2001VELO-Overview Post-TDR Hardware Software Critical Issues Summary

3 26 June 2001VELO-Overview Hardware Sensors Hybrids Thermo-Mechanical Module Testbeam Production Facilities

4 26 June 2001VELO-Overview Hardware: Sensors (1) Two types of sensors produced –Hamamatsu (n+n)- 1998 –Micron (p+n)2000 In fabrication (mask design at Lpool) –Micron (n+n)2001

5 26 June 2001VELO-Overview Hardware: Sensors (2) Laboratory –High precision tests with 1060nm lasers for both sets of detectors (LHCb note) Testbeam at CERN –Under preparation for 2001

6 26 June 2001VELO-Overview

7 26 June 2001VELO-Overview

8 26 June 2001VELO-Overview

9 26 June 2001VELO-Overview

10 26 June 2001VELO-Overview Hardware: Sensors (3) Additional test equipment –Cosmic ray facility – now commissioned Shorter wavelength laser (900nm) –Ordered Automated Scanning x-y stage

11 26 June 2001VELO-Overview Hardware: Sensors (4) Simulation complete –First principle analysis of leakage currents and charge collection as a function voltage Agreement with data –Note low voltage phenomena <20V Q/I amplifiers.

12 26 June 2001VELO-Overview Hardware: Sensors (5) Identify manufactures for Production –Hamamatsu (withdrawn n+n option) –Micron (n+n, p+n) –CSEM, Eurysis, SEIKO, SINTEF, ST Technical discussions Price Enquiry

13 26 June 2001VELO-Overview Hardware: Hybrids(1) Hybrid Design&Production to IDE –Delivered –Bonded and mounted with chips –Fan-ins produced –Under test 4 chips r/o (26/6)

14 26 June 2001VELO-Overview Hardware: Hybrids(2) Kapton version to be ordered early 7/01 SCT-VELO design (Liverpool) –improved cable connections –Viable pre-production prototype Beetle design

15 26 June 2001VELO-Overview Hardware: Module(1) Thermal models for TDR Cooling system –Safety issues addressed

16 26 June 2001VELO-Overview

17 26 June 2001VELO-Overview

18 26 June 2001VELO-Overview Power Delta(T) (from nominal) Calibration Model

19 26 June 2001VELO-Overview Chip glue kapton sensor ceramic TPG Chip glue kapton sensor TPG CF weave CF(UD)

20 26 June 2001VELO-Overview

21 26 June 2001VELO-Overview Hardware: Module (2) Prototype and testing of adjustment Re-engineering –Carbon fibre base –O CTE materials including adjustment screws

22 26 June 2001VELO-Overview Electronics Cooling Bracket & Fixings Carbon Fiber Paddle Micrometer Adjusters Paddle Base Flat Spring Location Base Substrates Silicon Detectors x y y z z x (pitch) (roll) (slew)

23 26 June 2001VELO-Overview

24 26 June 2001VELO-Overview

25 26 June 2001VELO-Overview

26 26 June 2001VELO-Overview Hardware: Module (3) Curvature of the sensors measured We may need to survey (cold?) the modules

27 26 June 2001VELO-Overview Hardware: Module (4) Measurement points

28 26 June 2001VELO-Overview

29 26 June 2001VELO-Overview

30 26 June 2001VELO-Overview Hardware: Testbeam Module for October 2001 –See also software

31 26 June 2001VELO-Overview Hardware: Production Facilities Clean rooms Bonding equipment Jigs and Assembly –Vacuum compatible glue dispensing

32 26 June 2001VELO-Overview Production Facilities LHCb R&D

33 26 June 2001VELO-Overview

34 26 June 2001VELO-Overview Software TDR analysis and optimisation Monte Carlo simulations of VELO VELO core software (meeting 5/6 July) Alignment Testbeam

35 26 June 2001VELO-Overview Software: Optimisation We generated and analysed over 10m bb events generated and analysed for different configurations: Physics Section Optimisation paper (for TDR) huge effort impossible without substantial effort

36 26 June 2001VELO-Overview Software: Silicon Other (non GEANT software) for optimisation of operating conditions

37 26 June 2001VELO-Overview

38 26 June 2001VELO-Overview

39 26 June 2001VELO-Overview

40 26 June 2001VELO-Overview

41 26 June 2001VELO-Overview

42 26 June 2001VELO-Overview Software: Alignment(1) Alignment: Underway –From HERA code used by H1 –Fast determination of global parameters –Reduced to linear problem

43 26 June 2001VELO-Overview Software: Alignment(2) Curvature of detectors

44 26 June 2001VELO-Overview Residuals

45 26 June 2001VELO-Overview Software: Other LHCb production LHCb Grid –Testbeam as testbed

46 26 June 2001VELO-Overview Critical Issues Electronics Manufacturers for Silicon Grid

47 26 June 2001VELO-Overview Summary Sensors Hybrid Module Software

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