SCT Services Installation

1
SCT Services Installation

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

Workpackage https//edms.cern.ch/document/593278/
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 (last
  week)
• 2125 double harnesses (4250 cables)
• Installation
• All racks in US side 2 USA racks were installed
  last year by TC teams (Russian)
• Installation resumed at the end of March with a
  new TC team (French)
• Very slow startup
• Completion of USA side was expected by the end of
  May
• Unlikely even with 2 teams (2 shifts) and with
  participation of Russian teams
• Connector in situ (CPE)
• All cables (except for a few) in US15 completed
  on March 10
• Most racks are tested
• Very good yield
• 2 techs returned on April 18 and currently
  working on one USA rack
• Complete US side and continue racks in USA15 when
  full team will be back

Racks on Level 6 US side
3
PP3

• 4261 PP3 units needed
• 173 are spares
• 139 empty shield cases
• Standard subracks of 30 units
• Mini subracks (of 5 units)
• Special subracks (PP3 empty cases)
• Layout of each rack can be found at
• http//www-atlas.lbl.gov/ciocio/SCTcables/Racks_L
  ayout
• Much of the installation done but lots of work to
  complete all racks
• Most of subracks installed
• Some subracks sitting by racks to be installed
• Small fraction of cables partially plugged in
• Rework for damages (due to installation)
• Parts missing
• 4 standard subracks

4
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
5
SCT ServicesSequence

• 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 two
  weeks to complete
• 583 SCT cables (336 Barrel, 247 EC)
• 27 Fibre cables (9 EC,18 Barrel)
• Sector 1 next can start this week to allow
  parallel team work
• 878 SCT cables (384 Barrel, 494 EC)
• 18 Fibre cables (Barrel)
• Sector 7 Lengths measured Length will be sent
  to company this week
• 583 SCT cables (336 Barrel, 247 EC)
• 27 Fibre cables (9 EC,18 Barrel)

6
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 the promised 400
  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)
• PPB1 clamps, clips, cable tray covers were
  late, not used yet during installation
• Clamp mounting finalized today
• Clip under revision
• 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

7
Type II/III cables Installation

• About 1000 cables installed
• ½ bundle /day/side/team
• 48 cables/day but can reach 100 in the future
• Problem with testing related to the grounding in
  cryostat (OK)
• Mechanical problems to fit layers of 6 cables
  between clamp holder pins (all cables installed
  have been retrofit)
• Clamp installation
• Barrel today
• EC final
• Details given in April SCTSG

8
SCT Readout Cables - Status

• All 18 (SCT readout) cables for end-cap in sector
  9 installed and tested, all OK (this was the
  first sector with SCT fibre cables).
• 18 barrel cables installed in sector 3 during
  last two weeks (9 on side A and 9 on side C).
  These were the first SCT barrel readout cables
  installed. Barrel cables are quite fragile due to
  a 3 meter long strip-back of the cable cladding
  at the end of the cables. No serious problems
  were encountered during the installation. The
  cables need to be tested, probably with the help
  of people coming from Oxford.
• 9 end-cap cables in sector 3 will be installed in
  the next phase, perhaps this week (6 cables on
  side A and 3 cables on side C).
• Sector 1 should be installed afterwards. There
  are 18 end-cap cables and no barrel cable.

9
FSI delivery cables and tubes

• 38 cables
• The first FSI delivery cable cut and prepared for
  the installation in sector 3. The length of the
  cable taken from the EDH table.
• After the first cable is installed, 8 more cables
  will be cut, labeled and installed (i.e. all
  cables for sector 3). The lengths to cut will be
  determined from the first cable.
• The first FSI tube is going to be bent, cut and
  installed this week by the technicians.
• The drawings of the tubes are not precise and
  needed some modifications to respect the real
  situation on the cryostat flange

10
SCT DCS Cables

• 128 type II and 40 type IV
• All cables for the barrel are in the pit and
  ready for installation
• Sector 13 24 cables are installed and tested
• Sector 5 24 cables are installed and tested
• 3 cables in sector 5 were damaged during
  installation (caught on sharp edge of cable tray)
  repaired
• 20 cables to be installed in sector 3 are ready
  but installation should occur soon
• Installation of SCT DCS cables interleaved with
  ID DCS cables

11
Installation Testing Activities

• Type IV (2 people Petr Prague)
• Acceptance test
• Test in rack after installation
• Test of cut cables after connector in situ work
• Plug-in cables into PS crates test with
  feedtrough
• Type II-III Preparation (5 people Vlastik Kuo
  Ming)
• Acceptance test (partial)
• Visual inspection
• Folding the shield and cut it the right amount,
  fix it
• Organize boxes with right cables to send
  following installation sequence
• Type II-III Installation(2 people Lars Neil
  part time Jacek)
• Mount dPPB1 and dPPF1
• For 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)
• For Endcap
• crimp group of drain wires in a ferrule and catch
  the ferrule with the grub screws into clamps
  holes

12
Issues

• PP3
• Damaged In the pit left by racks
• Damaged In the racks after installation/plug-in
  of type IV by French team
• Parts to finish assembly and installation too
  late
• 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)
• Several software updates to cope with different
  configurations (over last few months)
• Getting parts in time
• Spares installation
• 2 spare type ii-iii EC cables installed but too
  short need splicing extension
• Defective dPPF1
• Faulty cable was actually due to a bad channel on
  dPPF1 (that was marked color dots but it was used
  anyway)
• Type III installation testing
• Difficult conditions for testing because sequence
  of cables installed doesnt match order in PP3
  rack, cables are set aside and plug-in has to
  happen for all cables when rack completed
• Extra length to reroute on additional trays

13
Schedule

• Type II-III installation (from Marzio) by
  mid-June
• New schedule is expected this week
• Likely to go until end of June

Our schedule

• Type IV installation end of May going into
  June
• Connector in situ/testing mid-June/end of June
• PS crates mid-June (US side) July (USA side)
• PP3 assembly, installation end of May
• All cables plugged into PP3 end of June

• To meet this schedule we need continuous presence
  of people at CERN
• Last couple of weeks went relatively well but
• Hard/inefficient to train/instruct/introduce so
  many people
• Mistakes
• Difficulties to direct people to tasks in the pit
  because
• underground access not requested or level4A not
  taken before hand
• Critical area in the type II-III acceptance
  installation and testing
• SCT participation very valuable to add to people
  who are resident
• NEED technical participation to go into July

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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

16
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