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Tracker Tower Installation Review

Tracker Tower Installation Review. Peter Amnuaypayoat petera@slac.stanford.edu x8985 . Tracker- Mock-up Eng. Dev. (R. Ruland) Lessons Learned (Peter A.) I&T Flow for Tracker Installation (T. Borden) Grid Interface Hardware List Notation Coordinate System

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Tracker Tower Installation Review

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  1. Tracker Tower Installation Review Peter Amnuaypayoat petera@slac.stanford.edu x8985

  2. Tracker- Mock-up Eng. Dev. (R. Ruland) Lessons Learned (Peter A.) I&T Flow for Tracker Installation (T. Borden) Grid Interface Hardware List Notation Coordinate System Side Wall Identification Flexure Identification Installation Procedure – INFN Static Test (Non-Aligning) Presetting Procedure Alignment of inner cone relative to outer cone Installation Procedure – INFN Vibration Test (Aligning to CMM measurement) Dithering Procedure Shimming Procedure Cone Removal Procedure Alignment Tools Optical Survey Tools Near-Term Plans Final CMM of Mock-up at SLAC (8/5-6 tbd) I&T Training Grid I/F Hardware for I&T Future Topics (Next Meeting) Flex Circuit Cable Installation Cable Bending Cable Bonding Connector Saver Plan Agenda

  3. Tracker Mock-up Engineering Development • CMM Program established from Tower Mock-up model • Developed in Bay area and at INFN • Experience gained from Mock-up • Tower to Grid simulator installation • Alignment of Eccentric cones • Testing of the CMM program • Differences between Mock-up model and E.M. (Flight like) model • Corner Flexures are non flight like (older rev.) • Does not contain corner brackets or flight like reflector ball nests

  4. Tower Alignment Summary • Measurements at INFN • Used their CMM which runs PC-DMIS • Created measurement scripts for automated measurements • Derived CS which puts tower in optimized position, i.e. Z-axis vertical wrt gravity, X, Y symmetrical to actual shape • Determined coordinates of flexure conicals in tower CS • Comparing actuals vs design yields dial-in settings for cones • Applied settings, mounted tower to base • Cross-checks good to 500 µm (TBs too small and loose) • Planned measurements at SLAC • Verify procedure by independently creating equivalent measurement routine on our Leitz PMM using Quindos • Repeat measurement / alignment cycle at least three times

  5. I&T Flow For Tracker Installation Receive TKR Tower Prepare Grid Bay Remove CAL, TEM, TEM-PS, & TKR Tower from Single Bay Install TKR into alignment fixture Inspect, Metrology & El Test Measure TKR and Align Cones Install TKR Tower into Grid Bay Test Install TKR Tower into Single Bay Install CAL, TEM, & TEM-PS Install CAL, TEM, & TEM-PS Final Test

  6. Grid Interface Hardware list • Installation Shims: LAT-DS-03506 • Outer Eccentric Cone: LAT-DS-02788 • Inner Eccentric Cone: LAT-DS-02787 • Hex Bushing: LAT-DS-02789 • Hex Nut: LAT-DS-03925 • Shoulder Stud: LAT-DS-02791 Corner Flexure Grid

  7. Notation -X,+Y +Y, -x -X, +y Grid Simulator (Tower base plate) -X,-y +Y, +x +X,+Y (reference location) -X,-Y (reference location) +Y +X +Z -Y, -x +X, +y For all side flexures, the side flexure identifier is capitalized, while the side flexure conical (stud) is in lower case. +X, +y designates the stud on the + y side of the flexure which is on located on the +X side wall. +X, -Y (reference location) +X,-y -Y, +x

  8. Installation Procedure (Static test) - INFN • Refer to section 2.1 of LAT-DS-0425-01 • Installed Grid simulator with no Aligning • Performed on Tower Mock-up • requires no Aligning tools • Adjusting tools required • Preset three inner and outer cones to the concentric position • For three reference locations • Used to locate the position of Tower • Align slots on both cones • Remaining cones are to be “Dithered” • Process in which cones seat to their required position

  9. Presetting Procedure Refer to section 6.1 of LAT-DS-04245 Section 6.1.9: determine α by using Matlab program “angtool” Setting α, “inner to outer cone angle”

  10. Installation Procedure (Aligning to CMM measurement) - INFN Tower C.S +Z Tower C.S +Z Struc C.S +Z Determine β for each reference location LAT-PS-04245: Section 2.3 • Refer to LAT-MD-03566 and LAT-PS-04245 Calculate Flexure Point offsets from nominal and check against available travel Define a coordinate system based on the location of Top and Bottom Tray Hardware. Then move it so it is centered on the shape and size of the Sidewalls Set Eccentric Cone rotation, then mount Grid Simulator and fit with shims.

  11. Installation Adjusting Procedures • Dithering • Process in which cones seat to their required position • Tool LAT-DS-04337 • Shimming Procedure • Refer to LAT-PS-04245 section 9 • Measurement of gap • Selection of shim stack • Cone removal procedure • Refer to LAT-PS-04245 section 8 • Assembly of the cone Extractor • Removal of the Inner cone from the Corner Flexure • Removal of the Outer cone from the Corner Flexure • Separation of Inner cone from Outer cone

  12. Alignment Tools

  13. Additional Topics • Optical Survey Tools • Near-Term Plans • Final CMM of Mock-up at SLAC (8/5-6 tbd) • I&T Training • Grid I/F Hardware for I&T • Future Topics (Next Meeting) • Flex Circuit Cable Installation • Cable Bending • Cable Bonding • Connector Saver Plan

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