CO2 Transfer lines

From cooling plant in USC to the Pixel Detector at the center of the solenoid there are 4 different stretches of transfer lines for the CO2 coolant:1. From the cooling plant in USC55 to the manifolds in UXC55 X3 balconies

Near side (2 inlet and 2 outlet pipes) [n.1]2. From the manifold on X3 Near side to the edge of the yoke (8 inlet and 8

outlet on the +Z end, 8 inlet and 8 outlet on the –Z end). [n.2]3. From the edge of the yoke (4 paths or “sectors”) to inside the solenoid near

the PP1s (+5, +14, -6 and -15; 4 inlet and 4 outlet for each one of the paths). [n.3]

4. From near PP1s (+5, +14, -6 and -15, 4 inlet and 4 outlet for each sector) to the Pixel detector. [n.4]

PP1

Edge of the yoke

Sector (+5)

Sector (+5)Vacuum ports (optional)

Sector (+5)

Sector (+5)

M8 M12

M8

Sector (+5)

Sector (+14)

Sector (+14)

Cut slots

PP1

8 pipe

s in l

ine

300 m

m 110 mm

50 mm

PP1 +14C

110 mm

50 m

m

200 mm

Inlet: 6mm OD outlet: 10mm OD

~22 mm

Bottom insulation layer

Top insulation layer

CO2 cooling pipes schematics for BPIX +Z endAll BPIX pipes through PP1 +14C

PP1+14C

BPIX+Z

man

ifold

L1D1PN

L1D2PF

Pixel Seal

(a)(b) (c)

(d)

(e)

L2D2PF

L2D2PN

L3D2PNL3D3PF

L3D4PNL3D1PF

L4D1PNL4D4PF

L4D3PNL4D2PF

PML1

PML2

PML3

PML4

BPIX ON +Z END (PP1 +14C)Pipes at Manifold

BPIX layer

BPIX side

BPIX name

PML1 1NEAR L1D1PNFAR L1D2PF

PML2 2NEAR L2D2PNFAR L2D1PF

PML3 3

NEAR L3D2PNFAR L3D3PFNEAR L3D4PN

FAR L3D1PF

PML4 4

NEAR L4D1PN

FAR L4D4PFNEAR L4D3PNFAR L4D2PF

Edge of Pixel bore

Edge of Tk BH

PP0 region Pixel boreEdge of YOKE From edge of Yoke to first connection after the flexible is provided by DeMaCo

INLETOUTLET

CONNECTION (VCR)To be decided

Connection line

capillaries

Sector (+14)

Sector (+14)

Sector (+14)

Sector (-6)

Sector (-6)

Sector (-6)

Sector (-6)

Sector (-15)

Sector (-15)

Sector (-15)

Sector (-15)

1. Need feedback for the supports (type and spacing) on the vacuum tank. If OK we will start welding the M8 studs Wednesday.

Green light for the supports given. Support studs welded on the vac-tank

2. We will design the supports for inside the vacuum tank when we receive feedback on the design.

In progress…

3. Connection box: aluminum plate, then Armaflex, then cover: studs can be welded to the tank or the yoke, you have to be able to connect to M8 15 or 20 mm, position not the same in all spots….

OK

4. Size of connection boxes: in DWG 700x290x134, can it be reduced to 650x250x120? Very critical for sector +14 middle connection box

Smaller size agreed

5. Connection boxes: is vacuum connection fitting in the envelope? YES

A few points to discuss:

6. Vacuum ports on face of the vacuum tank are optional.It was decided NOT to implement this option

7. Planning (Jan?) All in one shot. When is you latest moment for confirming the date of installation?

We requested DeMaCo to assume in their offer that the installation will take place in one shot (both ends in series) starting week 2, 2014. Option for a split installation should be mentioned with the additional cost. Request to modify the schedule has been made to CMS.

8. Updated offer by end of August, order on first week of September.Still waiting….

A few points to discuss:

Martin.Gastal@cern.ch 26

CO2 pipes installation

30/07/13