March 2005 1

PIXEL CABLING ISSUES•General•Optical Cables•Copper Cables (Power & Control)•Things to be done

Service Tube

PP0 PP1

GalleryUSC55

0.6m ~ 4-5 m ~ 40 m ~ 40 m

K. Gabathuler March 2005

March 2005 2

Optical Cabling and Patch PanelsMeeting with F. Vasey March 9, 2005

9612

1

Strip Tracker

9612

1

Pixel

2 m

12

PP1

PP1PP0

0.6 m ~4-5 m ~50 m?Special pixel cables

PP0

Do not splice, butuse MU connectoras in Strip Tracker

March 2005 3

Laser/PIN MU connector2.0 m, cannot be changed

introduce loops (r > 3 cm)

4 cm

MU

-SR

12

way

ada

pter

Position and length of loops, andposition of MU-SR 12 way adaptermust be carefully chosen in z!

59 m

m

From laser/PIN-diode to MU connector

AOH AOH

All in service tube

barrel: z=50-70 cm

barrel: z=200-250 cm

March 2005 4

March 2005 5

0.3 m, fixed

~ 0.3 – 0.7 m, to be determined

MU

-SR

12

way

ada

pter

From MU-SR 12 way adapter to PP0

12-ribbonconnector PP0

March 2005 6

From PP0 to PP1special cables for pixel,F. Vasey will get tender for us.

A total of 260 ribbons.

Lengths determined from mock-up.

On the way from PP0 to PP1, thereis sorting into readout/control/spare//beam-monitoring groups.

12-ribbonconnector

12-ribbonconnector~ 4-5 m

March 2005 7

PP1

Ribbonsfrom PP0Multi-ribbon

cables toFED/Cs

March 2005 8

From PP1 To USC55

March 2005 9

From PP1 to USX55: 34 multi-ribbon cables

FED/FEC

PP1

March 2005 10

Si Tracker FED/FEC patch-panel

March 2005 11

March 2005 12

Copper Cables

Separate power cables(2.5V only) for:• Portcards incl. CCU• All PCB’s on barrel service tubeNeeded for power-upsequence

Control cables for:• T-sensors• H-sensors37 pin connectore.g. 9 T or 8 T + 1 Hfor one cable

Can we reducenumber of cables ?

empty

empty

March 2005 13

Things to be done soon:• Study position of MU-SR 12 way adapters and the fiber loops in service tube

• Determine lengths of cables going from MU-SR 12 way adapters to PP0

• Determine lengths of pigtails of multi-ribbon cables on FED/FEC side

• Decide on number of control cables

• Alick: Determine number of cables required for beam-monitoring (lumi-monitor?)

• Forward people: Please check all this for your system; irreversible decisions must be taken by May 2005.

March 2005 14

Diamond MFS Adaptor Qualification

• Brass pre-alignment piece• Steel screw (not removable)• Mount adapted to PP1

cassette.

9612

1

PP1

March 2005 15

FED patch-panel• 3D study underway

• March 2004: Report + proposal for prototype fabrication

• Production of terminated multi-ribbon cable dependent on successful outcome of complete study