Preparing TPC Installation

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Preparing TPC Installation

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Preparations in SXL2

Remove clean room wall (towards Muon area) and roof

Clear area for trailer

Setup hydraulic station

DF +

TPC

DF +

TPC

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Hydraulic station

plan view side view

Alternative: mobile crane

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Preparations in UX2

Complete TPC/TRD heat screen Platform under shaft: intermediate support for Delphi Frame (DF)Before L3 magnet

Support for DF (surveyed)Space Frame area

I-bars stored at BFConnection rails at BSFITS platform (used when moving TPC)

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Special precautions

DF has 4 feet, but no deformation allowed

Lifting jig is 3-point

4-point floating hydraulic support

3-point support (on trailer)

TPC is a closed volume, safety bubbler with Δp < 1 mbar

Watch Δp, ΔT to avoid sucking air

CO2 bottle on DF for replenishing

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TPC transport

Transport document is prepared DF + TPC: 24 t

1. On SX2 crane from clean room to hydraulic station2. Raise to allow trailer to pass under DF3. Lower onto trailer4. Transport on trailer to SX25. Pick-up with hydraulic station6. Lower to allow transfer to SX2 crane7. Lower into shaft onto intermediate support8. Transfer to UX2 crane9. Move to final support before L3 magnet

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ITS platform

Any number of segments possible

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Installation sequence

Based on previous experience in TPC-ITS integration test

1. Align, install connection rails

2. Move to IP under surveyNo adjustments of SF during moving foreseen, expected deformations < 2mm (cf. tolerance for beam pipe ±5 mm)

3. Align TPC at IP

4. Move back to ‘parking position’ under survey

5. ITS installation

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Spares

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Alignment of TPC with Beam Axis

Once the TPC is in the final position, the TPC axis is aligned with the beam axis.

Again, only the x,y,z, coordinates of the outer (and possibly inner) reference rods on the shaft side can be used to determine the position of the TPC.

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Installation of 1st ITS rail section

Two 6m sections of the ITS rails are inserted through the TPC and fixed by the ITS rail fixation points on the frontabsorber.

Then, the fixations points are slightly opened to allow the ITS rails to move to the parking position together with the TPC.

Since we assume that after movement of TPC to parking position and back to the IP the TPC ends up in the same position, the above procedure will make sure that the ITS rails are well aligned with the TPC when it moves to the IP.

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Heatscreen

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