1. STRAW TRACKER SYSTEM CAD STATUS :
Integration with neighboring tracker.
Aspects of integration in experimental hall.

2. ? - STRAWS TRACKER & NEIGHBORING COMPONENTS : General layout.
1813
1168 ?? ?
1728
1150
18 mm??
16mm
- FORWARD Z RAIL COORDINATE
- BW_EMC
400
1100
- DIRC
- STRAW TRACKER
- FW_GEM
17mm
543
560
- MAIN ISSUES:
- THE OVERALL LAYOUT IS TO BE CONSIDERED FROZEN .
Checking the position of the FW_GEM to avoid possible interference.
GSI – DECEMBER D.Orecchini / P.Gianotti

3. - STRAWS TRACKER & NEIGHBORING COMPONENTS : General layout.
DIRC Inner diameter 448mm
Free Space
6mm
STRAW SERVICES FRAME Outer diameter 442mm
- DIRC
- STRAW SERVICES FRAME
- STRAW TRACKER
- MAIN ISSUES:
The intention is to bring the SAFETY FREE SPACE to the minimum required of 10mm.
- THE PROJECT IS UNDER DEVELOPMENT.
GSI – DECEMBER D.Orecchini / P.Gianotti

4. IP - STRAW-TUBES TRACKER : General layout. - MAIN ISSUES:
560
1168 ???
1150 20
BW_EMC
Limit
1500
1460 IP
GEM Forward
Limit
TUBE LENGTH: 1400mm
350
1050 18 17
143
Free Space
- MAIN ISSUES:
THE OVERALL LAYOUT IS TO BE CONSIDERED FROZEN .
Checking the position of the FW_GEM to avoid possible interference. 30 30
Free Space 20 20
400
1100
GSI – DECEMBER D.Orecchini / P.Gianotti

5. - CENTRAL TRACKER AUXILIARY FRAME: General layout.
Vertex GBT
Auxiliary Frame:
- Central Tracker Assembling Frame;
- Transport Structure;
- Structure for insertion in the magnet.
FORESEEN ADDITIONAL
LATERAL SUPPORTS.
Straws Tracker
Services Frame
Straws Tracker
Flats, Cables, Gas Pipes.
Cross Pipe
STILL OPENE ISSUES:
The geometry of the various components can be consider frozen.
Checking the components to be supported (geometry, position, weight).
Foreseen lateral supports for Flats, Cables, Gas Pipes.
- IT’S NECESSARY AN UPDATE OF THE PROJECT.
GSI – DECEMBER D.Orecchini / P.Gianotti

6. - CENTRAL TRACKER A UXILIARY FRAME: General layout.
Straws Tracker
Services Frame
Beam Pipe 1° Sector
Support Component
Beam Pipe 1° Sector
Cross Pipe
- MAIN ISSUES:
Checking if it is planned to support also the first sector of beam pipe connected to the Cross Pipe (geometry, position, weight).
NB. The support component have to be removed after the connection with the main beam
pipe, (In working position) to allow the insertion of BW_EMC (?).
- IN THIS CASE, IT’S NECESSARY AN UPDATE OF THE PROJECT.
GSI – DECEMBER D.Orecchini / P.Gianotti

7. - CENTRAL TRACKER SERVICES FRAME: General layout.
Straws Tracker
SERVICES FRAME
Flats, Cables, Gas Pipes.
Racks.
Here…
……the Cables etc. could be routed
in the structural frame.
Flats, Cables, Gas Pipes…..
…. Proposed path from services
frame to rack.
Here…
……additional cable trays are required.
- MAIN ISSUES:
Management of the flats, cables and pipes in exit from the SERVICE FRAME and to bring in the racks.
- Convoing cables etc. in the structural frame;
- Foresee additional race-trays to reach the racks.
- IT’S NECESSARY AN UPDATE OF THE PROJECT.
Racks.
GSI – DECEMBER D.Orecchini / P.Gianotti

8. - MAIN ISSUES AND CONSIDERATIONS:
- CENTRAL TRACKER INTEGRATION: General layout.
Removable additional Parking Platform
Racks
Auxiliary Frame
Parking Platform
Racks
- MAIN ISSUES AND CONSIDERATIONS:
It seems that there are not problems in positioning the PARKING PLATFORM.
(The final dimensions are still to be defined).
It should be planned a REMOVABLE ADDITIONAL PARKING PLATFORM to be placed between the racks, which allows to bring the AUXILIARY FRAME near to the magnet, to realize the connection of the Central Tracker insertion system.
More space seems necessary between the racks to accommodate the flats, the cables, and the gas pipes which are to be convoyed from the SERVICE FRAME to its rack.
- IT’S NECESSARY AN UPDATE OF THE PROJECT.
GSI – DECEMBER D.Orecchini / P.Gianotti

9. - MAIN ISSUES AND CONSIDERATIONS:
- CENTRAL TRACKER INTEGRATION: General layout.
1160
- CT AUXILIARY FRAME ENCUMBRANCE: 1160mm
Free Space for side
Free Space for side
200mm
200mm
Rack
Parking Platform
- SPACE BETWEEN RACKS: 1560mm
Rack
1560
- MAIN ISSUES AND CONSIDERATIONS:
More space seems necessary between the racks (actually 200mm):
> to realize the connection of the Central Tracker insertion system.
> to accommodate the flats, the cables, and the gas pipes which are to be
convoyed from the SERVICE FRAME to its rack.
- IT’S NECESSARY AN UPDATE OF THE PROJECT.
GSI – DECEMBER D.Orecchini / P.Gianotti

10. Straws Tracker Racks Services Frame Beam Pipe 1° Sector
- BW-EMC & BEAM PIPE FLANGE INTEGRATION: General layout.
Straws Tracker
Services Frame
Racks
BW_EMC
BEAM PIPE FLANGE
Beam Pipe 1° Sector
Support Component
Racks.
SOME FINAL REMARKS :
1) The central tracker is in the final position;
2) The parking platforms has been removed;
3) The BW_EMC system has been placed in and shifted inside the magnet;
QUESTION: THE BEAM PIPE 1° SECTOR SUPPORT MUST BE REMOVED TO
ALLOW THE EMC INSERTION
WHAT DOES SUPPORT THE BEAM PIPE SECTOR?
4) The beam pipe pumps has been mounted in the operative position? If yes
QUESTION: WHAT DOES SUPPORT THE BEAM PIPE LOAD?
GSI – DECEMBER D.Orecchini / P.Gianotti

11. BACK-UP SLIDES

12. CENTRAL TRACKER INTEGRATED ITEMS: “CSF – Central Tracker Support Frame” ………
…THINGS DONE ………………
-TARGET : ACCEPTABLE MAX DISPLACEMENT (Due the Titanium Cross Pipe thickness): 0.05mm
> Hypothesized material: 8xM55J+ Rohacell+8xM55J
>Translational values – Magnitude Max mm
> Von Mises: Max 3.75MPa
-A) The general design and the main dimensions are fixed;
-B) Preliminary mechanical solutions to support the “Cross Pipe” has been developed;
-C) The preliminary structural calculations has been made ;
-D) A full scale prototype has been realized in collaboration with Torino Group. C A D B
- Involved groups: Frascati,Torino.
GSI – DECEMBER D.Orecchini / P.Gianotti

13. - Involved groups: Torino and Frascati.
CENTRAL TRACKER INTEGRATED ITEMS: “CSF – Central Tracker Support Frame” ………
….THINGS TO DO ………
-However, all the final design, is still evolving.
- Involved groups: Torino and Frascati.
-The solutions to support the “Cross Pipe” have had a preliminary approval by the “Cross Pipe” people.
A common development of the final solution is still to be worked-out
- Involved groups: Torino, Frascati and Juelich (Cross-Pipe people).
GSI – DECEMBER D.Orecchini / P.Gianotti

14. -CENTRAL TRACKER “SUPPORT AND SHIFTING SYSTEM”, things to do:
-The final solution for the interface between the “Support and Shifting Rails”,
and “Up & Down” support beam, is still be to be developed;
- Involved groups:“Frascati, Turin and “GSI” people.
GSI – DECEMBER D.Orecchini / P.Gianotti