SCT Services Installation SCT Cables Web page http
SCT Services Installation SCT Cables Web page http: //www-atlas. lbl. gov/ciocio/SCTcables/ Workpackage https: //edms. cern. ch/document/593278/ ID week - 26 September 2006 A. Ciocio 1
Cable trays from Calorimeter Barrel to HS PP 1 3 5 Type II cables 7 1 9 15 13 ID week - 26 September 2006 Type III cables A. Ciocio 11 2
Type II-III cables from Cryostat Type IV cables from PP 3 Racks - USA side Power Supplies racks in USA 15 Sector 7 Sector 9 Sector 11 Through corridors About 70 meters ID week - 26 September 2006 A. Ciocio 3
Type II-III cables from Cryostat Type IV cables PP 3 Racks - US side Sector 3 from Power Supplies Sector 1 racks in US 15 Through wall holes About 30 meters Sector 15 ID week - 26 September 2006 A. Ciocio 4
Type II/III power cables 4088 cables: installation and testing completed ! 2112 barrel cables & 1976 Endcap cables • 3594 cables (including all the 2112 Barrel) installed between March-July • 494 (EC sector 11&15) installed in the past 3 weeks Yield 99% production (defects) + installation (damage) ID week - 26 September 2006 A. Ciocio 5
Type II/III cables - THANKS to TC for the fantastic job to complete successfully such complex installation July 18 th 2006 Celebration for the completion of Barrel cables installation THANKS to the all SCT institutes for sending their technical staff to work on the preparation of cables and testing THANKS to our PL for supporting through CERN or SCT the more long-term technical staff over the past several months ID week - 26 September 2006 A. Ciocio 6
Type II/III cables in progress • 80% of the cables fixed on cable trays and positioned in PP 3 (TC) • Additional inspection, final verification and repair of damaged wires (yield might go down) • Re-position of EC bundles and clamp on the flange • Test of the whole chain from Cryostat to Power Supply ID week - 26 September 2006 A. Ciocio 7
PP 3 Parts Summary (original) PP 3 units installed in racks Channel Spare units in racks 4261 4088 173 Subracks (30 PP 3 units in a shell) 137 Subracks - special (shells of 30 partially filled with PP 3 and the rest with empty boxes) 9 Subracks – mini (shells of 5 units for spares PP 3 in a full rack) 4 PP 3 units Shells Mini shells Empty boxes ID week - 26 September 2006 A. Ciocio 2 2 4 110 8
PP 3 Assembly & Installation • • Assembly and Installation started last January and was completed in July All type IV were plugged in + type III barrel cable (and EC) of sector 1, 3, 9 Test of whole chain was almost completed for Barrel (US side) Since first installation (January) of PP 3 many problems were found and repairs implemented (see previous reports) – – Insulation between units Sliding units in subracks Failed units (2+) Shorts to the top hat outer shell • During test of whole chain new shorts appeared suggesting that the insulation of the units near the corners of the subracks is not strong enough to resist wearing or puncturing from any metallic dust and it can be damaged by just plugging in more cables Therefore it was decided to rework ALL subracks in the 17 PP 3 racks ID week - 26 September 2006 A. Ciocio 9
PP 3 Rework • PP 3 subracks containing 30 units to be: – – disassembled Cleaned glued properly plastic layers (0. 25 mm polyethylene terephthalate) to be inserted between all sides of PP 3 units • Disconnection of all cables was completed last week (by the SCT cabling/testing team) – 8000+ cables were hanging by the racks for several days • Scott Moncrieff and Ashley French were back Sept 4 (leaving next week) to do this rework • Rework has started (last Thursday) but with 2 ½ weeks delay because the material arriving from Australia (new/larger outer shells, etc. ) was late ID week - 26 September 2006 A. Ciocio 10
PP 3 Rework Plan Taking into account: • Connector in situ work • PS installation • Time to reconnect • Time to test whole chain ID week - 26 September 2006 A. Ciocio 11
Type IV Cables Installation • US side: – Type IV cables (2044+spares) from PP 3 racks in the ATLAS cavern to PS racks in US 15 • Installed in 2005 • With connectors (March 06) • 9 PS racks (8 for barrel) installed and cables plugged into PS backplanes • USA side: – Type IV from PP 3 to USA 15 installation completed (end of July) – All type IV were connected to PP 3 (17 racks in UX 15) until 1 month ago – Currently installing a few more spare cables in several racks (USA side) ID week - 26 September 2006 A. Ciocio 12
Type IV Cables – Related • Connector in situ (CPE) – All connectors (2100+) in US 15 completed in March – 2+1 CPE techs returned in mid-April for a few weeks • Rework of faulty connectors in US side • Started 2 USA racks but left again because more USA 15 racks were needed to be completed for the full team to operate efficiently – 4 CPE techs returned on August 1 st • Very slow startup - problems with the Company – 5 barrel (or mixed) racks in USA 15 are completed as of today • 2 racks this week (probably one) – The 7 th 8 th USA racks with Barrel cables will be completed during PS installation • all barrel cables will be at least cut to length before PS installation – The last 3 racks (EC) by Mid/End-October • Testing – All cables are tested as they are plugged in row by row during PS connection – All cables are tested 100 at a time as connectors are made – Test of whole chain was performed on the US side (80 %) in end-July/August • PS installation in USA 15 (see next talk) – started last week – first plug-in Sept 25 ID week - 26 September 2006 A. Ciocio 13
PS racks layout priorities for connector in-situ and plug-in ID week - 26 September 2006 A. Ciocio 14
Schedule Barrel • Type IV installation (spares) • All Connector in situ + testing end-September mid/end-October • PS crates (Barrel USA 15) mid-October • PP 3 rework end-September • All cables re-plugged into PP 3/PS • Test of whole chain (Barrel) mid/end-October Endcap • 2 (US 15) + 3 (USA 15) PS racks installation November • Test of whole chain December ID week - 26 September 2006 A. Ciocio 15
Work Plan ID week - 26 September 2006 A. Ciocio 16
Manpower • PP 3 rework is in progress – Need (crucial!) Ø 3 additional techs/physicist this week • 2 techs to help connecting • 1 person (student OK) to help with the rework in the lab – Need Ø 3 additional techs the first 3 weeks of October • To help connecting • Testing – Delay of connector in situ will involve more flexibility and additional adjustment of the schedule for • Re-connecting cables and testing the whole chain Ø More help needed in October ID week - 26 September 2006 A. Ciocio 17
PEOPLE ID week - 26 September 2006 A. Ciocio 18
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