Optical Fibers / Electronics Upgrade Fibers need for Upgrade -> Installation ? Two techniques possible for multi fibers installation Different routing possible from UX to surface (3 pits) Responsibilities for material installation Patch panels detector side (space) Status, Planning. - PowerPoint PPT Presentation
13 June 2013Laurent Roy Optical Fibers / Electronics Upgrade
Fibers need for Upgrade -> Installation ?
Two techniques possible for multi fibers installation
Different routing possible from UX to surface (3 pits)
Responsibilities for material installation
Patch panels detector side (space)
13 June 2013Laurent Roy Need for Upgrade:
Multimode - 50/125m - OM3 or OM4 - = 850nm -144 fibers? (12 x12) / cable or tubeMPO connectors
Total: ~ 17 000 fibers (Ken table / based on quantities estimated by the sub-detectors)
Total Length between detector and DAQ: ~ 300m (Rk: 2 options still open for Tell40 position)
Long distance fibers installed today Trunk cable:Multimode - 50/125 m - OM2 - = 850 nm - 96 fibers cable (8 ribbons of 12) MPO connectors
Total: 87 installed = 8350 fibers - 6 lengths ordered mini: 43m maxi: 65mspace in cable tray~2cm2/cable13 June 2013Laurent Roy 2 possibilities for multi fibers installation
Optical cable blown through rigid tubes:
well control by the companies for long distance (1-3 km) in Telecominstallation could be separated in 3 phases (tubes, fibers, connectors)large total section needed (~ 30 tubes diam. 40mm for 17000 fibers) bending radius constraining technician time for splicing very long - standard splicing (mono fiber): ~17 weeks with 2 technicians - splicing machine for 12 fibers ribbon exist (16000: Fujikura 70R) but not used a lot by European companies, need fibers organized per ribbon in the cable blown. need space for splicing cassette in both ends
13 June 2013Laurent Roy 2 possibilities for multi fibers installation
Cables pre-connectorized with MPO:connectors mounted, all fibers tested directly in manufacturer site (good quality assembly, measurements file provided) total section reduced (120 cables x 144 fibers, diam. ~15mm/cable)
60-70m is the length maxi EN-Cern group already installedbending radius during the installation to respect to not break fibers cable pulled with its extremities where fragile MPO connectors areprecautions to take increase time to install (need access) in cable traylengths between racks must be measured with precision before order nevertheless, need space somewhere to absorb the surplus.
asfas13 June 2013Laurent Roy Preparation: supports installation during LS1 ?
supports for these 2 techniques are not the same.(special supports for tubes / cable ducts for cable pre-connectorized)
Advises + Prices estimate asked to EN/EL-Optical section + to few companies ~ 1 month ago (with Rainer and Niko): UX85+pit visits on going.
- End of offers reception in ~ 1-2 months should help for our choice
PZ85 shaftNew LHCb Control RoomNew server RoomsD3 Barack: actual Front End Boards locationPM85 shaftPX85 shaftLaurent Roy13 June 2013Total length ~ same through the 3 pits.(PM85 ~+10-20m/PZ85)Max 300m.Daniel Lacarrere scheme
3 pits at Point 8Laurent Roy PX85: rejected (space keep free for big detector, cable routing not trivial on the top) PZ85: need to pass through the shielding wall a) access difficult (on the vault above the detectors) b) use last space available which we will be happy to have for other additional cables? PM85: no access possible for installation during Physic program , + 10-20m longer
Rk: Thanks Daniel for his help to explore all possibilities
13 June 2013a)b)hj7Laurent RoyTell40
Patch PanelPatch cordlong distance cablePatch PanelCable chainElectronic BoardsDetectorcables UX85 Protected areaUX85 Detector sideShielding Wall~ 300m total lengthTell40Pit 100m~ 100m total lengthOption 2Option 3Patch PanelPM85PZ85DAQshort links (10Gb Ethernet)13 June 2013~ 200m lengthOption 1Option4 = Option 2 + Option 3 together ? long links (10Gb Ethernet)hj813 June 2013Laurent Roy
installation responsibilities :( scheme from Rainer )Cern Team: long distance fibers, Racks, Patch panelsSub-detectors:Patch cordsSub-detectors:Patch cords13 June 2013Laurent Roy
Quantities / Patch Panels
total based on the worst case scenario of sub-detector choices (Ken-end of April)13 June 2013Laurent Roy
Additional Patch Panel racks ?
RB86 Side (Calo+Muon)
1 Calorimeter PP - A side (full)add 1 rack C side
1 Muon PP for each sideadd 1 small rack in each side ?
Futur CALO CMUON AMUON C2 ?CALO AMUON A2 ?MUON C
13 June 2013Laurent RoyAdditional Patch Panel racks ?
RB84 Side (Velo, RICH1, TT, Bunker)
Velo+TT+Rich1keep Balcony racks (if PZ85 used)Use velo analogue cable traysadd 1 rack C side (if PM85 used)
Bunker racks: +/- fulladd few racks on Cryo platform (if PM85 used)New racksfor Optical connectionsBunker PP:MUON1RICH2ITOTBalcony PP:VeloTTRICH1A sideC side
13 June 2013Laurent RoySpace available:
Cryo platform - Behind Magnet C side - near Muon and Calorimeter racks
13 June 2013Laurent RoyPlanning:
Sept-Oct 2013: choices done between the different options. End of 2013: supports integration done in 3D mock-up Need to find Manpower (designer) to integrate the ducts
Beginning 2014: offers request for supports installation.
End of LS1: supports installation done.one optical link prototype (complete chain: transmitter -> Tell40 receiver) installed ?
2015: Call for tender (6 months)
During Technical Stop of LHC Physics program 2016-2018Racks, Patch panel and fibers installation, tests.
First days of LS2: Long distance fibers ready.
13 June 2013Laurent RoyCONCLUSION
Choice to do between 2 techniques for fiber installation Choice to do between 4 options for routing (Tell40 on surface or downstairs, PM85 or PZ85) Cost comparative on going Fibers Tests on going (Rainer slides) Decisions have to be takeen soon if we want to profit of LS1 to install supports in PM85 (access limited, even not possible during LHC running period).
Important to have a good estimate of quantities - end of 2013: to evaluate the space needed, dimension the supports, the patch panel space in UX Racks. - end of 2014: before the call for tender
Sub detectors, please look at proposal for Patch Panel racks position