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DCal-ALICE integration and installation plan and status

This document outlines the integration and installation plan and current status of DCal inside ALICE. It covers various aspects such as services, cabling, cooling, infrastructure, ventilation, access, and integration with other detectors.

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DCal-ALICE integration and installation plan and status

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  1. DCal-ALICE integration and installation plan and status A. Tauro

  2. Outline • Status of integration of DCal services • DCal cabling and patch panels • DCal cooling pipes • Modification of access inside L3 • Modification of ventilation inside L3 DCal-ALICE integration and installation plan and status

  3. Integration of DCal inside ALICE Several integration items: • Services • Cabling, cooling, … (incl. cooling plant modification) • Infrastructure • L3 ventilation • Access • Access to L3 (including emergency evacuation) • Access to PHOS and TOF electronics • Integration with PHOS • Modification of PHOS services • Installation of PHOS modules • Installation • New rails • How to install DCal without disrupting ALICE? • Integration with future detectors • VHMPID, PHOS#1, CPV DCal-ALICE integration and installation plan and status

  4. DCal cabling and patch panels • LV and sense cables routed from the cradle up to rack A-13 • HV cables routed up to CR4 • All patch panels (LV1-LV2,…) installed on cradle • Because of the new cradle we had to re-design the routing of the PHOS cables and cooling services DCal-ALICE integration and installation plan and status

  5. LV cabling up to rack A-13 DCal-ALICE integration and installation plan and status

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  10. Cable length and section DCal-ALICE integration and installation plan and status

  11. Cooling Water plant: EMCal plant must be modified with addition DCal loop DCal-ALICE integration and installation plan and status

  12. Access • Complete re-design A-side ladder • Modification existing services (TOF-TRD cooling pipes) needed • Displacement of C-side ladder • Leave free passage below cradle (I-side) • Rescue injured people • PHOS access • Access below PHOS modules (electronics) preserved DCal-ALICE integration and installation plan and status

  13. Access A-side ladder C-side ladder A-side ladder Safety passage DCal-ALICE integration and installation plan and status

  14. L3 ventilation • Impossible to leave existing air manifold • Is in the way of the new cradle • Different alternatives studied • Access to C-side compromised • Final solution: DCal rails used as air manifold • Set of 10cm holes along central axis of rails DCal-ALICE integration and installation plan and status

  15. Top view (2nd beam symmetrical) 10.2m 1m 1m L3 ventilation CFD study to predict air speed and flow distribution DCal-ALICE integration and installation plan and status

  16. Distance DCal-PHOS • DCal-PHOS = 170mm, fixed to accommodate PHOS cooling services DCal-ALICE integration and installation plan and status

  17. To be studied • Seismic simulation on complete structure • Procedure to extract and reinstall rails • Drawings rotator and insertion rails DCal-ALICE integration and installation plan and status

  18. Timeline • Installation target: 2012 • We need to have all structures (cradle, rails) at CERN ~6months before shutdown, e.g. summer 2011 • Checks at P2 before installation: • Full assembly of rails + cradles in surface • Services installation on cradle, pp fixation,... DCal-ALICE integration and installation plan and status

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