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AMS-02 tracker mechanics status of assembly and integration

Inner tracker integration completion: - Assembly and cabling - Temperature and magnetic field sensors - Shells closing and flanges mounting - Tooling Preparations for pre-integration:

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AMS-02 tracker mechanics status of assembly and integration

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  1. Inner tracker integration completion: - Assembly and cabling - Temperature and magnetic field sensors - Shells closing and flanges mounting - Tooling Preparations for pre-integration: - Test of evaporators (cooling loops) integration + tools - Pre-assembly of outer planes with inner tracker + tools - Cabling issues studies - Jigs for transport and storage at CERN -Tracker configuration for LBBX (TAS) mounting - Integration sequence - Issues to be solved AMS-02 tracker mechanicsstatus of assembly and integration Divic RAPIN, UniGe AMS TIM July 2007

  2. General view of Silicon tracker • 5 planes, 8 layers • Plane 1, layer 1 • Plane 2, layers 2&3 • Plane 3, layers 4&5 • Plane 4, layers 6&7 • Plane 5, layer 8 • 192 ladder modules • 1024 electronic channel/module  200’000 channels Planes are supported by shells and conical flanges. (not shown)

  3. Ladder Assembly (Perugia-Geneva) • ASSEMBLY • ~ 210 ladders build • PHASE 2 hybrid box & legs gluing • EMI SHIELDING ( kapton foil wrapping) • Full test at each step with RA source and noise control

  4. Installation of ladders on support planes (UniGe clean room) Plane 3 being stored (under Nitrogen) Details of fixation on both sides

  5. Assembly of the inner tracker in the Durga jig • Set-up for storage & insertion into the magnet. • Cables must be installed before the supporting shells and extra length must be attached to temporary supports.

  6. Tracker with cables but without closing and supporting shells 384 flat cables from ladders to electronics Temporary storage of cables

  7. Temperature (Dallas) and B-field sensors have been tested before closing of the inner tracker (A.Lebedev and U.Roeser) T-sensors B-field sensor

  8. Closing inner tracker and disconnection from Durga jig

  9. Removing inner tracker from Durga assembly jig

  10. Tests of integration of cooling loops on outer plane (1) and on inner tracker (top) Cooling loops are fragile and not self supporting. They need to be kept in jigs for fabrication, storage, transport and assembly Complete installation and assembly jig Outer ring assembly and installation jig Inner ring assembly and installation jig

  11. Jigs and support pieces were developed in order to manipulate the plane and to install cables and cooling loop at the same time Outer cooling loop on plane 1

  12. Test integration of the inner cooling loop

  13. Test integration of the inner cooling loop Real life will be less easy due to dimensions of vacuum tank

  14. Test integration of the inner cooling loop

  15. Test integration of the inner cooling loop It fits perfectly

  16. Test integration of outer plane on inner tracker (with loops) Jig for cable storage and crane manipulation of outer planes (compatible with loop)

  17. Test integration of outer plane on inner tracker (with loops) Device allowing safe and precise approach of the outer plane for the last 25 mm. Guiding spacers to prevent damaging contacts between ladders and conical flange during approach of the outer plane.

  18. Study of cabling related issues Tracker feet regions Star tracker support region

  19. Inner tracker support for storage and transportation (AMS01 test beam frame) The present state of the tracker (no loops, both outer planes mounted) is convenient for LBBX (TAS) adjustment and installation. (not for transportation) Tracker feet regions

  20. TRACKER (MECHANICAL) INTEGRATION SEQUENCE(simplified) • Sequence dictated by topology • Up or upside down position not specified hereafter

  21. Start: four separate boxes Two outer planes with: - cables, loop, LBBX+fibers Inner tracker with: - cables, upper inner loop Lower inner loop

  22. Step 1: insertion (lower flange removed)

  23. Step 2: four upper feet installation Next: prepare lower conical flange

  24. Step 3: lower conical flange installation

  25. Step 4: four lower feet installation After this operation, tracker and vacuum case can be rotated

  26. From this step, TOP and BOTTOM operations are independent Step 5: unfold and secure cables(and remove supports) Prepare lower inner loop

  27. Step 6: Install lower inner loop Next: outer planes

  28. Step 6: Install outer plane (connect loops)

  29. Step 7: unfold and secure cables(and remove supports)  Connect to crates

  30. Next operations and open issues • Cooling loop modification + new connectors (Splinter meeting this TIM) • VC metrology (Splinter meeting this TIM) • Balcony design (already started by F.Cadoux) and production (TBD). • Detailed cable routing (in progress) • LBBX installation (WW during August). • Containers for outer planes and covers for inner tracker frame (UniGe) • Outer planes: Installation of cooling loop, cables and test (UneGe • Light tightness (UniGe) • Revision and completion of detailed procedures (E.P. and D.R.)

  31. Conclusion of the April 2007 TIM presentation of D.R. Near future integration operations at UniGe • Design of storage and transport jigs for inner tracker and outer planes (re-use of Alu frame used for AMS01 beam test) (in progress) • Design and construction of outer plane installation jig. • Supporting shells installation and remove inner tracker from Durga. • Pre-assembly of inner evaporator on inner tracker (check mountability). • Pre-assembly of outer planes (check mountability) on inner tracker. • Time requested by TAS for laser beam alignment/installation. • Orbital welding of new connectors is needed for upper/lower inner/outer evaporators (on critical path)

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