# Presentation: 093962

## SCT Services Installation

- SCT Cables Web page _[http://www-atlas.lbl.gov/ciocio/SCTcables/](http://www-atlas.lbl.gov/ciocio/SCTcables/)_
- Workpackage _[https://edms.cern.ch/document/593278/](https://edms.cern.ch/document/593278/)_

- A. Ciocio

- ID week - 26 September 2006

## SCT Services

- Type II-III Power Cables
- PP3
- Type IV Power Cables
- Fibre Cables
- DCS Cables
- Schedule
- Work Plan/People

- A. Ciocio

- ID week - 26 September 2006

## Cable trays from Calorimeter Barrel to HS

- Type II cables

- PPB1

- Type III cables

- Type II cables

- Type III cables

- Type II-III Power Cables Installation

- PPF1

- A. Ciocio

- ID week - 26 September 2006

## PP3 Racks - USA side

- Sector 7

- Type IV cables
- from
- Power Supplies racks in USA15

- Type II-III cables
-  from Cryostat

- Sector 9

- Through corridors
- About 70 meters

- Sector 11

- A. Ciocio

- ID week - 26 September 2006

## 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

- A. Ciocio

- ID week - 26 September 2006

## 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 + bad cables after installation (replaced)

-  Fibre cables go to USA15

- A. Ciocio

- ID week - 26 September 2006

## 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 2006
- Celebration for the completion of ID Barrel cables installation

- A. Ciocio

- ID week - 26 September 2006

## 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

- A. Ciocio

- ID week - 26 September 2006

## 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 |

- A. Ciocio

- ID week - 26 September 2006

## 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 metallic dust and it can be damaged by just plugging in cables
- Therefore it was decided to rework ALL subracks in the 17 PP3 racks

- A. Ciocio

- ID week - 26 September 2006

## PP3 Rework

- PP3 subracks containing 30 units to be:
- disassembled
- cleaned
- glued properly
- plastic layers (0.25 mm polyethylene terephthalate) 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
- ~4000 PP3 units in B161
- Scott Moncrieff and Ashley French were back on Sept 4 (but leaving next week) to do this rework
- Rework has started (last Thursday) but with 2 1⁄2 weeks delay because the material arriving from Australia (new/larger outer shells, polyester, etc.) was late

- A. Ciocio

- ID week - 26 September 2006

## Plan for PP3 Racks Rework Cables Reconnection & Testing

- Taking into account:
-  Connector in situ work
-  PS installation
-  Time to reconnect
-  Time to test whole chain

- A. Ciocio

- ID week - 26 September 2006

## 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 (as double harness)
- Connectors in situ (March 06)
- 9 PS racks (8 for barrel) installed and cables plugged into PS backplanes (July)
- 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
- extra spare cables just added in several racks (USA side)
- All cables tested before and after installation

- A. Ciocio

- ID week - 26 September 2006

## Type IV Cables – cont’d 

- 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
- 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/testing Sept 25
- Test of whole chain started
- Test of whole chain (again) in US15 will follow

- A. Ciocio

- ID week - 26 September 2006

## PS rackslayoutpriorities for connector in-situ and plug-in

- A. Ciocio

- ID week - 26 September 2006

## SCT Readout Cable Installation(from Kamil Sedlak)

- Start-point:
- PPB1 (Barrel) and PPF1 (Endcap)
- End-point:
- SCT racks in USA 15
- 144 cables (+2 spare)
- Each cable houses
-    6 or 8 ribbons
-    with 12 optical fibres each
- Ribbons terminated
-    by MT12 connectors

- Light duty rigging  protecting the bare ribbons. A chain is attached for convenient cable installation.

- A. Ciocio

- ID week - 26 September 2006

## All SCT Readout Cables Installed

- Installation started in March, finished in August 2006.  It had to respect the installation sequence of other services/detectors.
- Many small problems found during the installation  improvisation at the time of installation.  No fatal problem found.
- One fibre found broken during testing after the installation  repaired by splicing in a new ribbon end with the MT12 connector.

**The break is here**

- Barrel and EC cable swap in USA 15

- A. Ciocio

- ID week - 26 September 2006

## Testing of the SCT Readout Cables

- No acceptance test has been done before the cable installation to avoid spoiling the heavy duty rigging (cables tested by Fujikura).
- After the cable installation, two tests were done:
- Test of fibre attenuation:
- Check that the attenuation losses in the fibre and in the MT connectors are within the specifications (all ribbons in the cables were checked).
- TOF for all TTC fibres in cables:
- Measurement of the ribbon lengths.
- Useful for setting up correct timing for Cosmics and the first data.
- All 144 cables tested.  All cables OK, although attenuation of 5 ribbons slightly worse than allowed by specifications (see next slide).
- Testing was quite slow (~1 cable per hour per shift) and sometimes difficult to organise due to the interference with the installation of other ID services  testing outside working hours.
- Testing summarized in the EDMS document ATL-IS-QC-0002.

- A. Ciocio

- ID week - 26 September 2006

## FSI Delivery cables

- There are 38 FSI delivery cables (optical cables for delivering and collecting the FSI laser light signal).
- The ribbons have no MT12 connectors – installation was much easier at this stage, except for the need to cut the cables off the heavy drums.
- The ribbon connections will be done by splicing later on.
- The first batch of the FSI cables (sector 3) too short  Serguei Malyukov kindly changed the routing of the FSI delivery cables.  Afterwards the lengths were OK for all sectors.
- All FSI cables installed already.  No testing done.

- A. Ciocio

- ID week - 26 September 2006

## SCT DCS Cables

- Richard Brenner + Lars Lindquist
- 128 type II and 40 type IV + 4 canbus
- All cables between cavern and USA15 are installed except for 12
- 	(missing a cable tray – to be arranged with TC)
- Interlock cables in US15 installed
- Interlock cables between PS racks in USA15 and DCS rack in USA15 installed recently (4 cables x 11 racks)
-     (just before PS installation started)

- A. Ciocio

- ID week - 26 September 2006

## Schedule(Power Cables & PP3)

**Barrel**
-  All Connector in situ + testing		mid/end-October
-  PS crates (Barrel USA15)		mid-October
-  Test of whole chain 			end-October
- (see slide #12)
-       **PP3 & cabling**
-  PP3 rework		 		end-September + 1 week
-  All cables re-plugged into PP3/PS		mid/end-October
**Endcap**
-  2 (US15) + 3 (USA15) PS racks installation	November ? (TBD)
-  Test of whole chain 			by December/January 07

- A. Ciocio

- ID week - 26 September 2006

## Work Plan

- A. Ciocio

- ID week - 26 September 2006

## PEOPLE

- 2006

- + Freiburg, MPI, Japan, Glasgow, Manchester, Lancaster, UCL...

- A. Ciocio

- ID week - 26 September 2006

## Final Remarks

- PP3 rework has added extra load to an already dense schedule of activities
- 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
- Need
_**3 additional techs the first 3 weeks of October**_
- To help connecting
- Testing
- PP3 rework and 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**_

- A. Ciocio

- ID week - 26 September 2006