Services – First Considerations Sigi Wenig / Nicolas Massol ATLAS Tracker Upgrade Workshop Valencia 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

Sigi Wenig / Nicolas Massol 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  o.k.  difficult but o.k.  rather messy WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

Existing Services – SCT WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

Existing Services – Pixel WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

Existing Services – TRT WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

Feed-through Re-arrangement FREE With re-arrangement: 0.5 layer more TRT TRT occupancy: 1.5 layers Total gain: 2 layers WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol

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 WS Valencia 13-Dec-07 Sigi Wenig / Nicolas Massol