1 / 9

Status of Type IV Cables

Status of Type IV Cables. Cables production resumed in February after 3 months stop See ID week February ‘06 Delivery of doubles harnesses completed (April) 2125 double harnesses (4250 cables) Installation All racks in US side + 2 USA racks were installed last year by TC Russian teams

bridgettj
Download Presentation

Status of Type IV Cables

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Status of Type IV Cables • Cables production • resumed in February after 3 months stop • See ID week February ‘06 • Delivery of doubles harnesses completed (April) • 2125 double harnesses (4250 cables) • Installation • All racks in US side + 2 USA racks were installed last year by TC Russian teams • Installation resumed at the end of March with a new TC team (French) • Very slow startup, safety issues, wrong usage of labels, mistakes • Completion of USA side was expected by the end of May • But <50% done • Russian teams will take over 1-2 racks – expected completion end of June • Need to test last ~200 cables for acceptance • Need to test after installation to be able to cut extra length to liberate floor in USA15 • Connector in situ (CPE) • All connectors (2000) in US15 completed on March 10 (a few were left but they are done now) • Many racks are tested before and after plug into PS (Petr with Prague team) • Very good yield but some rework was necessary • One rack needs cables rerouting (cables were cut too long by previous company) • 2+1 techs returned on April 18, started 2 USA racks but left again: Need more USA15 rack completed for the full team to operate efficiently • US side was reworked and racks in USA15 will be continued when full team will be back (mid-June) Racks on Level 6 US side A.Ciocio - SCTSG

  2. PP3 • Remaining units and parts about to be finished and will be sent “soon” • Scott will come back (June 13) for 4-6 weeks • Much of the installation done but lots of work to complete all racks: • Most of subracks of 30 units installed • Need 7 subracks to complete all installation and “special” subracks • Some subracks sitting by racks to be installed • Small fraction of cables are plugged in • Issue with schedule: • Rework for damages, shorts, bad assembly has to happen when needed with technical help available • Problem of not having all the parts in hand because changing of priorities and racks not completed A.Ciocio - SCTSG

  3. Type II/III & PP1 – Production • INEO/Thurmelec are making type II-III cables in 2 steps: • double length harnesses as they receive information about the lengths type II cable and type III spliced type II FCI/JST connectors on both ends of double harness • Single length cables with FCT connector (PP3) are produced when length finalized with test cable measurement from cryostat to PP3 racks sector by sector • Delivery rate reached 300 cables/week • We are ahead with cable preparation! • So far good quality • No fatal defect found on some cables (the color coat is gone is some section/pattern but kapton insulation OK) • Fatal defect (but repairable) found on 2-3 cables ( • Only a few cables failed acceptance • PPB1 – clamps, clips, cable tray covers were late, not used yet during installation • Clamp mounting started • Clip under production • PPF1 – most parts available • Found the best way to crimp group of drain wires in a ferrule and catch the ferrule with the grub screws into clamp’s holes A.Ciocio - SCTSG

  4. Type II/III cables – Installation • ~ 2300 cables installed • ½ bundle /day/side/team • 48 cables/day but may reach 100 • Old problems: • (Details given in April SCTSG) • Problem with testing related to the grounding in cryostat (OK) • Mechanical problems to fit layers of 6 cables between cover/clamp holder pins (all cables installed have been retrofit) • Clamp installation • Yield: • <1% cables to replace • - Mechanical defects • - Damage • - Failed electrical test A.Ciocio - SCTSG

  5. SCT Services Sequence • Sector 5 (top) and Sector 13 (bottom) • heater cables, and DCS cables (completed) • Sector 9 - Installation completed on May 1 • 878 SCT cables (384 Barrel, 494 EC) • 18 Fibre cables (EC) • Sector 3 - Installation started May 2 – completed last week • 583 SCT cables (336 Barrel, 247 EC) • 27 Fibre cables (9 EC,18 Barrel) • Sector 1 - started in parallel 2 weeks ago – will be completed this week • 878 SCT cables (384 Barrel, 494 EC) • 18 Fibre cables (Barrel) • Sector 7 – first 300 cables arrived – installation in parallel just started • 583 SCT cables (336 Barrel, 247 EC) • 27 Fibre cables (9 EC,18 Barrel) • Sectors 11, 15 – Double harnesses length sent to company to fabricate – single length this week • 583 + 583 SCT cables (336 Barrel, 247 EC) • 27 + 27 Fibre cables (9 EC,18 Barrel) • Installation sequence in a sector is: • Tubes, fibres, heater cables, SCT cables, (Muon chambers), • TRT cables, pixel cables A.Ciocio - SCTSG

  6. Schedule • Type II-III installation should be completed by mid-July • (according to current schedule from TC) Our schedule • Type II-III installation mid-July (Barrel) • Type IV installation end of June… • Connector in situ/testing end of July • PS crates mid-June (US side) – July (USA side) • PP3 assembly, installation end of June • All cables plugged into PP3 mid-July • We need continuous presence of people at CERN at least until mid-July • (and later in August) • Critical area in the type II-III acceptance, installation and testing • SCT participation very valuable to add to people who are resident A.Ciocio - SCTSG

  7. Plan A.Ciocio - SCTSG

  8. Installation & Testing Activities A.Ciocio - SCTSG

  9. Issues • PP3 • Help is coming next week but continues to be difficult to keep up with technical problems and missing subracks • Connector damage • In US15 they are left too long on the floor • Other cables installation interference • Tester • Different flavor that work with different configuration of cable chain • Multiple laptops failure (~ok now) • Spares installation for type II-III cables • 2 spare type ii-iii EC cables installed but too short – needed splicing extension of type III • We don’t have spares of every flavor – need rework to get the right one in place • Defective dPPF1 • Some faulty cables were actually due to a bad channel on dPPF1 – missing some dPPF1 • Type III installation & testing • Difficult conditions for testing • Extra length to reroute on additional trays • Dedicated team (Russian) available to plug-in but need assistance (and all cables tested) • Type IV installation • Very inefficient and need extra interaction with new team • Interference with type II-III installation • Connector in situ • With the current rate of type IV installation difficult to keep schedule as planned • The very first rack has 200 cables to reroute under the rack to absorb the extra length • More HELP for the following weeks A.Ciocio - SCTSG

More Related