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Services in ATLAS Tracker Upgrade Workshop

Summary of existing and new services in the ATLAS Tracker Upgrade Workshop in Valencia, including installation details and considerations for re-use or installation of services. Presented by Sigi Wenig and Nicolas Massol.

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Services in ATLAS Tracker Upgrade Workshop

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  1. Services – First ConsiderationsSigi Wenig / Nicolas MassolATLAS Tracker Upgrade WorkshopValencia 12-14 December 2007 Existing services (in cryostat bore and on flange) SCT, TRT, Pixel, Heater, DCS Feed-through in Sector-1 Re-use of existing services – First considerations New services – First considerations

  2. First Comment • We performed already the first upgrade: Far Heaters • And for that we combined the 3 possibilities: • Use existing services without modification: Inlet pipes • Use existing services with modification: Cables • Install new services: Outlet pipes  rather messy  difficult but o.k.  o.k. Sigi Wenig / Nicolas Massol

  3. Existing Services – Summary • In total 47 267 cables with 1432 associated cooling pipes • 2 years of design work (Marco Olcese, Claude Menot) • 112 installation drawings (flange) • 144 detailed connectivity documents • 30 detailed lists for cable installation sequence • 200 man months (Jan 2006 – March 2007); includes • Cable installation on cryostat bore, on flange, partially up to PP2 • No cable connection • Installation of associated cooling pipes/pipe-loops (also for Type-3 cables) • Pipe connections • Various materials (Cu, SS, Al) • Various diameters from 3 to 24 mm • Various connection types (brazing, crimp, Serto, Swagelok) • Various connection locations • At PPF1, on Flange, between LAr Boxes, at tile fingers, at PP2, on HS structure Sigi Wenig / Nicolas Massol

  4. Existing Services – SCT (BA, EC) • 4 088 multi-purpose cables [along Barrel – Z0 – HS] • Organized in 80 bundles with 4(3) layers (312 layers of 12 to 16 cables) and • 320 associated cooling pipes with 736 crimp connections • Installed one by one • Very delicate/complicated endpoint/connectivity at PPB1/PPF1 • 3 months installation time with 8-10 people (based on final speed) • Up to tile fingers (synchronization with installation up to HS) • Includes wrapping with cooling pipes • 144 readout fibres • Organized in bundles of 3 to 6 cables • Very rigid, very difficult to handle • Very delicate installation and complicated endpoint at PPB1/PPF1 • 2 Weeks installation time with 2-3 people • 80 FSI fibres • Organized in 8 bundles • 200 DCS cables • 2 different types Sigi Wenig / Nicolas Massol

  5. Existing Services – SCT Sigi Wenig / Nicolas Massol

  6. Existing Services – Pixel • 1 808 cables (LV, HV, NTC) [up to PP2] • Organized in 3 x 16 bundles with 32 associated cooling pipes • Installed one by one and in ensembles of 3 • Rather large LV bundles • Robust connectivity at PP1 • Delicate space limitation at small R • Very difficult/clumsy temporary folding-back/storage • 2 months installation time 4-5 people • Up to PP2 • Includes wrapping with cooling pipes • 84 fibres • Organized in 2 bundles of 6 layers, each • Very rigid, very difficult to handle • 48 DCS cables Sigi Wenig / Nicolas Massol

  7. Existing Services – Pixel Sigi Wenig / Nicolas Massol

  8. Existing Services – TRT (BA, EC) • 40 128 cables (LV, HV, Signal) [up to PP2] • Organized in 416 harnesses with 128 associated cooling pipes • Installed by sets of 3 to 4 harnesses • Rather easy to handle (may-be a bit heavy) • Connector pockets for BA • Connector boxes for EC • 2 months installation time with 2-3 people • Without up to PP2 (but temporary storage at tile fingers) • Without embedding around cooling pipes Sigi Wenig / Nicolas Massol

  9. Existing Services – TRT Sigi Wenig / Nicolas Massol

  10. Existing Services – Heater / DCS(ID) • 779 heater cables • 6 different types • Heater pads, evaporative cooling (3), feed-through heater pads (2) • High diversity • Complicated endpoint • Complicated connectivity • 60 DCS(ID) cables Sigi Wenig / Nicolas Massol

  11. Feed-through at Present • Feed-through of Sector-1 • Organized in 4 layers • 360 mm wide • 25, 25, 22, 20 mm high • No considerable space available for additional cables • (Nearly) all remaining space filled by seal Sigi Wenig / Nicolas Massol

  12. FREE TRT TRT TRT FREE FREE TRT FREE • TRT occupancy: 1.5 layers • With re-arrangement: 0.5 layer more Feed-through Re-arrangement • Total gain: 2 layers Sigi Wenig / Nicolas Massol

  13. Re-use of Existing Services – First Considerations • The following actions on the existing services have to be taken (anyhow) • For the removal of the detector all Pixel cables have to be folded back again and the PPF1 region has to be completely dismounted (TRT boxes, SCT EC mountings) • All services on the cryostat bore have to be removed • SCT BA cables have to be cut, new connectors installed • TRT cables have to be removed and (at least) cut somewhere • All cable trays have to be removed • The PPF1 region has to be completely re-organized • New patch panel to connect services to detector • Attention: SCT EC cables may be too short •  In situ mounting of new connectors to (may-be) all 4088 cables (at least 1584) • New readout fibres have to be installed (at least 30) • For new Pixel B-Layer existing services can very probably not be used • If a considerable amount of additional cables are to be installed (e.g. 5 times more HV cables?), TRT services have to be removed • Feed-throughs are full • Potential envelope problems on flange (in z), in particular if crossing is necessary • And all this has to be done in an activated environment Sigi Wenig / Nicolas Massol

  14. New Services – First Considerations (1) • Even though it is a pity to remove the existing services, it looks to us (after a first glance) more reasonable to re-start from scratch • The re-use of the present services configuration will very probably impose too many constraints given the increased number of channels, the different granularity, and the potential new cooling concept • To remove everything up to the tile fingers is not really a considerable effort, but will allow to restart from a clean situation • Activation aspect has to be considered also in this case • For the new services many things can be improved • Services can be re-designed as to avoid the actual diversity • Cable ensembles (harnesses) which include most functions and end in a “handy” connector • Detector/cable cooling can be freely re-considered • Re-organize PPF1 such that the connection from detector and from outside is easy and fast • In the spirit of the TRT solution, but less heavy Sigi Wenig / Nicolas Massol

  15. New Services – First Considerations (2) • Main proposal would be • Try to design services such that all can be brought to PP2 through Sectors 1 and 9 • 4 feed-throughs per side • But Sectors 3, 7, 11, 15 are not completely excluded • Main open issue are • To clarified whether TRT type-3 cables can be re-used with intermediate patch-panel at PP2 • How to re-organize PP2 to make use of the TRT space which will become available • How to organize the design effort • Need a new “couple” Olcese – Menot In any case, services installation aspects have to be considered from the very beginning Sigi Wenig / Nicolas Massol

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