Installation Review

March ‘03

F.Tosello, L.Simonetti – INFN Torino1

Install temporary support It’s made of 2 halves; the upper

one is brought into position through rotation about axis “A” (to avoid risks for the beam pipe)

It has 4 flaps (“B”) at ±45º for fixation of beam-pipe and SPD supports prior to transfer their load to ITS

Align (survey) temporary support to the beam pipe

A

BInstallation step 4. (3 days)

A

Installation Review

March ‘03

F.Tosello, L.Simonetti – INFN Torino2Dummy 3rd cone

FMD – Si1

Installation step 5. (4 days)Fix support for beam pipe and

FMD (“3rd cone”) to temporary support The 3rd cone is made of two

halves containing the FMDs lifting tools allow for slow and

accurate positioning of 3rd cone Spoke structure reduces

material in front of FMDs and allows for visual inspection

Test FMDs FMDs have pigtails up to the

outer edge of the 3rd cone

Lifting tool

Remove 3rd cone lifting tools

Installation Review

March ‘03

F.Tosello, L.Simonetti – INFN Torino3

Installation step 6. (2 days)

Lifting tool

First Beam Pipe Support

Mount and adjust monitoring system of bellow movements Responsibility ALICE Non-touching capacitive sensors

are proposed

Bellows

FlangesDetectors

Beam Pipe Support Adjustment

Third cone FA Mount and adjust 1st

support to the beam pipe Responsibility AT/VAC Survey

Installation Review

March ‘03

F.Tosello, L.Simonetti – INFN Torino4

Section 2 Install the two SPD half-

cylinders (Resp. ALICE) Two half cylinder/cones Specific installation tools

are being designed SPD services (cables,

fibres & capillaries) are pre-assembled in the cones

SPD services

Remove section 2 of beam pipe support (Resp. AT/VAC)

Installation step 7. (8 days)

Fix the two, coupled, SPD half-cylinders to temp. support, above the 3rd cone, using a 2nd series of bolts & precision plugs

SPD fixed in cantilever mode to temp. support, SPD pigtails on RB24 side unconnected

3rd cone

SPD cone

Temporary support

Installation Review

March ‘03

F.Tosello, L.Simonetti – INFN Torino5

Slide outer ITS onto SPDs (Responsibility ALICE) Transfer load of SPD and 3rd cone (beam pipe) from temporary support to ITS

Installation step 8. (7 days)

Mount and adjust 2nd support to the beam pipe (resp. AT/VAC) Survey

Outer ITS, SPD & beam pipe are now an integral unit

TPC/C4

Temp.Support

SPD

SDDSSD

Connect SDD and SSD on RB26 sideFinal fixation of SPD pigtails on RB24

side to ITS cone