ITS /MFT installation concept CERN 27 September 2012

Corrado Gargiulo

Beam Pipe

Valve

TPC

Absorber

SIDE A

SIDE C

ITS

Layer 1,2, 3

Layer 4,5

Layer 6,7

ITS

MFT

MFT

MFT& ITS Services

Corrado Gargiulo

MFT Vs SERVICES

In order to be able to extract the MFT without displacing the TPC, all MFT services should come from A-side. In case it is necessary to route some of the services to the C-side, they should be implemented so they can be connected and disconnected remotely.

A-side

C-side

Beam Pipe Support C-Side

Beam Pipe intermediate support

ITS Outer Barrel

ITS Inner Barrel

MFT Vs BEAM PIPE SUPPORTS

The insertion of each half MFT has to take into account the beampipe intermediate support, which consist of an horizontal carbon bar placed inside the TPC. This is in the way of the MFT translation towards the nominal position.

SUPPORT CAGE

Corrado Gargiulo

Beam Pipe

Cage (bottom-half)

Rails

BeamPipe installation on Support Cage

Beam Pipe

Cage (bottom-half)

Rails

TPC

Corrado Gargiulo

BeamPipe installation on Support Cage

TPC

Beam Pipe

Cage (bottom-half)

Rails

TPC

Corrado Gargiulo

TPC sliding to final positionCage hanging to TPC

TPC

Beam Pipe

Cage (bottom-half)

Rails

TPC

Corrado Gargiulo

Temporary Rails removal

MFT

Corrado Gargiulo

MFT +services carrersin parking position

The installation of the MFT foresees the insertion from the A-side in the TPC through a guided movement along the beam pipe.For installation purposes the MFT is divided in two halves, top and bottom, to get around the beam pipe and each half is installed independently from the other.

With the MFT mounted around the beampipe in its parking position, the beampipe vacuum valve interferes with service carriers.

In order to avoid such interference, the services carriers will be opened radially with respect to the beam line,

MFT

Corrado Gargiulo

MFT +services carrers moving in

The MFT half barrel is inserted in the TPC in a position radially shifted to gain the needed clearance with the beam pipe and its intermediate support. The insertion and its final positioning is achieved by a guides system that drives the translation.

Services carriers will be progressively closed to reach the final arrangement while the detector is translated towards the interaction point.

MFT

Corrado Gargiulo

Services carriers will be progressively closed to reach the final arrangement while the detector is translated towards the interaction point.

MFT +services carrers moving in

MFT

Corrado Gargiulo

In the last centimeters of the translation along the z-axis the MFT approach the beampipe with a radial movement to reach the final position.

MFT +services carrersin position

Layer 1,2, 3Layer 4, 5

Layer 6,7

Outer Half Barrel

Inner Half Barrel

ITS Half Barrel

ITS

a) b) c)

d) e) f)

ITS Outer Layers

Corrado Gargiulo

ITS Inner Layers

MFT structure: guides system

Corrado Gargiulo

MFT structure: guides system

rollers

Corrado Gargiulo

MFT structure : guides system

guides

Corrado Gargiulo

MFT structure : guides system

guides

Corrado Gargiulo

~ n 4 250mmx30mm TBC

MFT services carriers

MFT services carriers

ITS layer 4,5 services carriersITS layer 6,7 services carriers

ITS layer 1,2, 3 services carriers