# Presentation: 157392

## Type II/III Cables and PP1

- Status & Plan

- A. Ciocio - SCTSG

- 25 October 2005

## Type II/III Cables

- Double harness ordered from Ineo
- Work on splicing started in August (Thurmelec)
- Installation of connectors on the PP3 end at the factory
- Need to provide exact length for both types and PP3 connectors
- Two Contracts first to produce all the harnesses and then to install the connectors
- Production of harness started – 175 double harnesses produced (for Barrel) doing Endcap now
- Cables with PP3 connectors 3 weeks around – between December and March

- A. Ciocio - SCTSG

- 25 October 2005

## Cont’d

- Testing
- Use dummy PP1 with some load to test that the splice didn’t get damaged after installation
- JST and FCI connectors very delicate – better to test at the PP3 end
- Splice is verified at the company
- Need QA going on regularly during production (Saverio D’Auria just joined)
- Previous visits by Pepe B. Maarit W. and Laurent Gillain(CERN purchasing) quite satisfactory – mostly looking at the splicing
- _[http://pcppe01.cern.ch:8081/jwhite/www/pics/Cable_Pics/2/](http://pcppe01.cern.ch:8081/jwhite/www/pics/Cable_Pics/2/)_
- Recent visit (Pepe, Maarit, Saverio) mostly on strip back length

- A. Ciocio - SCTSG

- 25 October 2005

## PP1

- Test of first 5 samples (double harness) show a problem with keeping JST and FCI connectors in place and lack of consistency in the difference between the 2 strips back lengths
- Requirement of 2mm difference in strip back lengths of the power lines and thinner lines (JST – extra length – confirmed by David)
- Pepe, Maarit and Saverio visited Thermelec last week and discussed this issue
- Company agreed to respect a minimum and will try to keep it between 0 and 2mm for future production
- Company will check lengths of current batch (rework =they throw the connector hood and recut the wires)
- Guessing around 50% of the harnesses in the first batch have > 2 mm length difference (but it’s maller than the samples)
- We’ll need to decide how to proceed and how many to have fixed
- Need to understand margin in the length difference
- There are also designs for Clips to keep the cables in place (Tony). Production of the mould started - finished by end of the year

- A. Ciocio - SCTSG

- 25 October 2005

## PP1 connection

- A. Ciocio - SCTSG

- 25 October 2005

## PP1(cont’d)

- To be sure that the existing strip lengths are correct, we'd need to assemble two cables of each of the three strip lengths together with a real PPB1 and clamp
- Find out about order of installation
- Different strips back lengths harness brought back from company in last visit - we’ll try them

- A. Ciocio - SCTSG

- 25 October 2005

## Extra length in sector 9

- TC are asking us to make our type II cables longer in one sector (by 5 m), so that the thinner cables continue through a difficult region
- Find limits on voltage drop that we can tolerate, translated into an upper limit on the length of type II (in progress Pippa Heinz et al)
-  see Pippa’s talk

- A. Ciocio - SCTSG

- 25 October 2005

## DPP1 in cryostat

- checked the dummy PPB1 in the cryostat bore (with Andy)

- A. Ciocio - SCTSG

- 25 October 2005

## Plan

- Provide lengths (done) and labels for harnesses for first batch of cables (for sector 5) so that the connectors can start to be placed (~200 cables) (soon we hope)
- Work out lengths (and provide them) for future production
- Connectors will be delivered end of November but we are hoping to get a small amount delivered sooner so that we can have the 200 mentioned above built.
- Prepare for testing
- Work on QA and clarify lengths of strip back with company

- A. Ciocio - SCTSG

- 25 October 2005