Extra Services to be added to YB0 for the Tracker during LS1.Preliminary table.The last item may also need to be added to the services on the vac-tank (probably preferable rather than connecting it to an existing Ericson fiber)

Extra services to be installed during LS1 on YB0

Extra services for Tracker to be installed on YB0 during LS1 per sideName Function Type Quantity OD (mm) Comments

DryGasWPBH Warm dry gas flexible pipes for bulk-head region flexible pipe 18 14 to be routed on YB0 to reach each of the

18 (EB/HB) sectors.

SnifferPipes Sniff for humidity from the bulk-head region copper pipes 9 6 to be routed on YB0 to reach each every

2 sectors

Xentaur readout xentaur humidity sensors

electrical cable (coax BNC) 8 5 to be routed on YB0 to reach 4 at the

bottom half and 4 at the top half

Pixel Power

provide power to the innermost layer of the upgrade phase I pixel detector

electrical cable (MSC6X4) 4 12.5

to be routed along the present Tracker cable distribution plant (2 reaching PP1 6A/-5C, and 2 reaching PP1 15A/-14C)

DPGprovide power and signal for new differential pressure gauges

electrical cable 2 5 to be routed one for top and one for bottom

FOSProvide extra T and H sensors from the bullk-head region

optical fiber ? ?likely only from PP1 to the bulk-head. Use existing Ericson fibers from PP1 to USC

HB Fibers Provide spares for HB for the TTC system. optical fiber 18 2

To be routed on YB0 to reach each one RBX. This is in view of the fact that with the HB upgrade the presently installed spares will be all used

Main issue: find space on the radial surface of YB0 to access the vac-tank. Once on the vac-tank there is much more space to move around (although still complex).Proposal: use already existing EB/HB Rest cable trays which still have a reasonable amount of free space.

1

5

8

9

12

+Z

Extra Services total cross-section is ~45 cm2 per side (at this moment).

Example:Considering the extra dry air pipes on the +Z side.Need to distribute 18 extra dry air pipes. We could consider adding 4 pipes on EB/HB Rest radial cable tray on muon sectors 5 and 9 and 5 pipes on muon sectors 1 and 8.

EB/HB Rest Cables. YB0 radial section

YB0 Muon Sector

Total used cross-section (cm2)

Total available cross-section

(cm2)

Current Filling Factor (%)

Free cross-section (cm2)

1 219.4 293 74.9 73.65 61.5 100 61.5 38.58 217.8 293/255    9 61.5 100 61.5 38.5-3 219.4 293 74.9 73.6-7 156.3 195?    

-10 184.6 293 63.0 108.4

Need to feed 4 PP1s, for example: 14,15,16,17.I. Follow EB/HB Rest cables, cross over EB-LV cables (a) and mount on

the OF cable trays (b) and from there feed the chosen PP1s.II. Alternatevely, once on the vac-tank, they could follow EB-LV cables

1415

16

(a)

(b)

Example:Muon Sector 9

SECTOR +9

Space available on the side of the ECAL rest cable tray is about 85mm in height by 70mm in width.Red protruding objects are DT gas feeder connectors.

Additional cooling pipes for Pixel Phase I upgrade: preliminary look

Most important:• Find space on the radial section• Minimize the routing complexity on the vac-tank

Example again on Muon Sector +9

70mm

80mm

19mmcryogel

Possible pipe configuration

9

+14C

From Muon sector +9 we need to reach PP1 +14C, shown in the picture.

About 90mm diameter space available next to the thermal screen supports on the vac-tank.There is a straight shot from the muon iron to the edge of the vac-tank

+14C

o Possible routing (~90mm diameter)

+14C

Muon sector 9

Muon sector 1

9695

9686

Settore 5

Pixel inletCold Dry Gas Pipes inletThermal Screen inlet

PP1 +5C

Thermal Screen outlet

Settore 5

In nero sono indicati gli spaziatori

di plastica da 3 mm di spessore

See next slide

STUVW1234

Pixel inletCold Dry Gas Pipes inletThermal Screen inletThermal Screen outlet

Settore 5 Radiale