SCT%20Services%20Installation

1
SCT Services Installation

• Type IV
• PP3
• Type II-III and PP1
• Testing Installation Plan

Workpackage https//edms.cern.ch/document/593278/
SCT Cables Web page http//www-atlas.lbl.gov/cioci
o/SCTcables/
2
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 lt50 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)

Racks on Level 6 US side
3
In USA15 back of racks
4
In USA15 front of racks
5

In USA15
6
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
• Only a small fraction of cables are plugged in
• Issue with schedule
• Rework for damages, shorts, bad assembly had to
  happen when needed but only occasional technical
  help was available
• Problem of not having all the parts in hand,
  hence cant complete racks under installation
  right now (very bad!)

7
PP3
Units sliding off
8
PP3
PP3

• Sealant silicone instead of silicone glue was
  used at some point
• Only one spot instead of 5 spot pattern

9
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 clamps holes

10

Type II/III cables Defects
11
Bad work during preparation!
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Type II/III cables Installation
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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
• lt1 cables to replace
• - Mechanical defects
• - Damage during installation and preparation
• - Failed electrical test

14
Type II-III by Sector
US PP3 racks
USA PP3 racks
336 Barrel 247 EC
336 Barrel 247 EC
Level 8
Level 7
384 Barrel 494 EC
384 Barrel 494 EC
Level 5 2
Level 6
336 Barrel 247 EC
336 Barrel 247 EC
Level 2
Level 1 2
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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)

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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 situtesting end of July(?)
• PS crates end-June (US side) July-Aug (USA
  side)
• PP3 assembly, installation end of June
• All cables plugged into PP3 mid-July-August(type
  IV) for type II-III later

• 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

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Installation Testing Activities
Activity Resident Additional
Type IV Acceptance test Test in rack after installation Test of cut cables after connector in situ work Tomas (Prague) 3
Plug-in cables into PS crates Test with feedtrough Petr (Prague) Prague 2
Type II-III Preparation Acceptance test (partial) Visual inspection Folding the shield and cut it the right amount, fix it Organize boxes with right cables to send for installation Jessica (UCSC) Kuo-Ming (Sinica) 4
Type II-III Installation Mount dPPB1 and dPPF1 (Barrel) Squeezing the cables to fit between pin and clamp holder Plug-in of the delicate JST/FCI connectors to dPPB1 Placing the clamp (now), placing the clip (later) (ENDCAP) crimp group of drain wires in a ferrule and catch the ferrule with the grub screws into clamps holes Plug in the dPPF1 Jacek (Crakow) 1
Type II-III Testing Alexandre (Dubna) 3
PP3 Burn-in of units Assembly into subracks Installation into racks of subracks Plug-in the cables to PP3 Scott (Melbourne) 1
Test of whole chain 2
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Plan
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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
• We dont 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 still 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 and
  blocking connector in situ work

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To work on cabling

• http//www.hep.phy.cam.ac.uk/si-bin/sctworkplanner
  .cgi
• To sign up for shifts (and contact me because of
  unexpected changing in rate delivery/testing
  problems)
• Safety courses
• 1) basic safety training course (level 1-2-3
  video in B55)
• http//safety-commission.web.cern.ch/safety-commi
  ssion/SC-site/sc_pages/training/basic.html
• 2) Level 4 for working in US15 Oxybox (we have
  them)
• If you have an AIS LOGIN (used for EDH
  documents), you can follow the course from
  anywhere
• (even outside CERN) with AIS login by accessing
  http//sir.cern.ch.
• If you have no AIS LOGIN, you need to register at
  the following address level4.training_at_cern.ch
• 3) Level 4A mandatory to enter the ATLAS
  underground areas
• This course is composed of 4 modules Cryogeny,
  Evacuation, Installation and Magnet. Each of
  these modules is followed by a small test which
  you have to take and pass.
• If you do not yet have an AIS login, please
  contact the ATLAS secretariat and ask
  for this AIS account (they must be registered
  with ATLAS). If this is not possible, we will
  organize special training at CERN.
• 4) make the access request on EDH
• 5) get your safety boots helmet (or borrow
  them)
• TRY TO GET AS MUCH AS POSSIBLE DONE BEFORE COMING
  TO CERN

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LINKS Summary

• SCT Cables Web page
• http//www-atlas.lbl.gov/ciocio/SCTcables/
• Mapping, technical appendices, cables related
  documents
• https//edms.cern.ch/document/624679/1
• Shifts
• Shift planner (developed by D. Robinson) works
  very well for planning the activities and have
  people to sign up
• http//www.hep.phy.cam.ac.uk/si-bin/sctworkplan
  ner.cgi
• Safety courses
• Level 1-2-3 basic course for access underground
  and point 1
• http//safety-commission.web.cern.ch/safety-commis
  sion/SC-site/sc_pages/training/basic.html
• Level 4 with AIS login http//sir.cern.ch.
• Level 4A AIS login
• Overall Safety and Health Procedure Document
  PPSPS
• https//edms.cern.ch/document/593278/
• Rack Wizard
• http//atlas.web.cern.ch/Atlas/TCOORD/Activities/I
  nstallation/Database/rack.htm