SCT Services Installation
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Transcript of SCT Services Installation
ID week - 26 September 2006 A. Ciocio 1
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 2
Cable trays from Calorimeter Barrel to HS
1
35
7
9
15
1311
Type II cablesPP1 Type III cables
ID week - 26 September 2006 A. Ciocio 3
PP3 Racks - USA side
Sector 7
Type IV cables from
Power Supplies racks
in USA15
Type II-III cables
from Cryostat
Sector 9
Through corridorsAbout 70 meters
Sector 11
ID week - 26 September 2006 A. Ciocio 4
PP3 Racks - US side
Sector 3
Sector 1
Sector 15
Type II-III cables
from Cryostat
Type IV cables
from
Power Supplies
racks in US15
Through wall holes
About 30 meters
ID week - 26 September 2006 A. Ciocio 5
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 6
Type II/III cables - THANKS
THANKS to TC for the fantastic job to complete successfully such complex 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
July 18th 2006Celebration for the completion of Barrel cables installation
ID week - 26 September 2006 A. Ciocio 7
Type II/III cables in progress
• 80% of the cables fixed on cable trays and positioned in PP3 (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 8
PP3 Parts Summary (original)
PP3 units installed in racks
Channel
Spare units in racks
4261
4088
173
Subracks (30 PP3 units in a shell) 137
Subracks - special
(shells of 30 partially filled with PP3 and the rest with empty boxes)
9
Subracks – mini (shells of 5 units for spares PP3 in a full rack)
4
PP3 units
Shells
Mini shells
Empty boxes
2
2
4
110
ID week - 26 September 2006 A. Ciocio 9
PP3 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 PP3 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 PP3 racks
ID week - 26 September 2006 A. Ciocio 10
PP3 Rework
• PP3 subracks containing 30 units to be:– disassembled– Cleaned– glued properly – plastic layers (0.25 mm polyethylene terephthalate) to be inserted
between all sides of PP3 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 11
PP3 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 12
Type IV Cables Installation
• US side: – Type IV cables (2044+spares) from PP3 racks in the
ATLAS cavern to PS racks in US15• 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 PP3 to USA15 installation completed
(end of July)– All type IV were connected to PP3 (17 racks in UX15)
until 1 month ago– Currently installing a few more spare cables in several
racks (USA side)
ID week - 26 September 2006 A. Ciocio 13
Type IV Cables – Related • Connector in situ (CPE)
– All connectors (2100+) in US15 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 USA15 racks were needed
to be completed for the full team to operate efficiently– 4 CPE techs returned on August 1st
• Very slow startup - problems with the Company– 5 barrel (or mixed) racks in USA15 are completed as of today
• 2 racks this week (probably only one)– The 7th 8th 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 USA15 (see next talk)– started last week– first plug-in Sept 25
ID week - 26 September 2006 A. Ciocio 14
PS rackslayout
priorities for connector in-situ and plug-in
ID week - 26 September 2006 A. Ciocio 15
Schedule
Barrel
• Type IV installation (spares) end-September• All Connector in situ + testing mid/end-October
• PS crates (Barrel USA15) mid-October
• PP3 rework end-September
• All cables re-plugged into PP3/PS mid/end-October • Test of whole chain (Barrel) end-October
Endcap• 2 (US15) + 3 (USA15) PS racks installation November• Test of whole chain December
ID week - 26 September 2006 A. Ciocio 16
Work Plan
ID week - 26 September 2006 A. Ciocio 17
Manpower• PP3 rework is in progress
– Need (crucial!) 3 additional techs/physicist this week
• 2 techs to help connecting• 1 person (student OK) to help with the rework in the lab
– Need3 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
More help needed in October
ID week - 26 September 2006 A. Ciocio 18
PEOPLE