1. (A) (B) - CENTRAL SUPPORT FRAME - INFN-LNF - SPAS 1
- CENTRAL SUPPORT FRAME GEOMETRY -
A recent update is referred to the “inner skin”.
(Presented on “Turin - Central Tracker Workshop - April 2009)”
(A)
(B)
The previous circular mylar foil (A), could be substituted with a panel of carbon fiber (B), 1mm thickness, properly shaped to gain some more space. 1
Turin - June B.Dulach D.Orecchini

2. - NEW INNER SKIN SECTION: PICTORIAL VIEWS WITH VERTEX -
- CENTRAL SUPPORT FRAME -
INFN-LNF - SPAS
- NEW INNER SKIN SECTION: PICTORIAL VIEWS WITH VERTEX -
- New skin shape. 2
Turin - June B.Dulach D.Orecchini

3. 57mm - CENTRAL SUPPORT FRAME - INFN-LNF - SPAS - Further free space.
- NEW INNER SKIN: SECTION VIEW WITHOUT VERTEX -
- Further free space.
- Straw Tubes.
- Old skin shape. Radius: 158mm.
57mm
Stirrups radius: 86mm.
- FREE SPACE -
- ST_Tracker inner radius: 150mm.
- Connection bars.
- New skin shape. 3
Turin - June B.Dulach D.Orecchini

4. - CENTRAL SUPPORT FRAME - INFN-LNF - SPAS
INNER CENTRAL TRACKER ZONE “MAIN NUMBERS”:
Outer beam pipe radius: mm
Plus free space (to allow pipe spatial regulation, 3mm): mm
Plus outer support “Central Frame flange” radius (5mm thick.): -- 86mm
Plus stirrups outer radius (7mm thick.): mm
FREE SPACE FOR VERTEX CABLES AND COOLING: +/- 57mm 4
Turin - June B.Dulach D.Orecchini

5. - CENTRAL SUPPORT FRAME - INFN-LNF - SPAS
- CENTRAL TRACKER ASSEMBLY SEQUENCE -
- JUST TO REMEMBER -
2 Step: Vertex assembly.
- 1 Step: Cross & Beam Pipe assembly.
- 3 Step: Straw-Tubes Tracker assembly. 5
Turin - June B.Dulach D.Orecchini

6. - CENTRAL SUPPORT FRAME - INFN-LNF - SPAS
The “Central Support Frame” idea is ready.
A new is: Frascati and Turin are evaluating the hypotesis to realize a
prototype in the INFN Turin workshop.
NB: The items yet to develop are:
A)- The connection points with the target pipe and the beam pipe and the
related structural verifications.
B)- Where and how to attach the rails of the “Support and inserting system”.
(They must be developed with the involved people.) 6
Turin - June B.Dulach D.Orecchini

7. - CENTRAL TRACKER MOUNTING & INSERTING SYSTEM - INFN-LNF - SPAS
- JUST TO REMEMBER -
A:-An “Inserting structure”, with an Up and Down “Extra Beams”…..
a)- will be placed (by Hall crane) and aligned on the “service platform”.
b)- connected with the internal Up an Down beams.
B:- In sequence will be assembled:
a)- The cross-pipe.
b)- The vertex.
c)- The two parts of the S_Tubes tracker.
d)- The cabling and gas system.
C:- The central tracker will be shifted on the “working position”.
NB.- The distance that the tracker must be cover
is more or less of 4m.
- The alignement operations could be realized with a
series of targets opportunely placed on the assembled
components and a laser tracker system. 7
Turin - June B.Dulach D.Orecchini

8. - S_TUBES TRACKER CABLING MAIN ASPECTS –
- CENTRAL TRACKER CABLING -
INFN-LNF - SPAS
- JUST TO REMEMBER -
- S_TUBES TRACKER CABLING MAIN ASPECTS –
We have to bring out the following amount of cables and gas pipes (till now):
1)- Needed cables and gas tubes section: 5000mm^2.
2)- Estimated cables and gas tubes weigt: 6 Kg/m
ST_Tracker cable section: 5000mm^2.
ST_Tracker cable section: 1250mm^2 each.
ST_Tracker gas system.
NB: The item to develop is:
- how to support and how to bring out the “gas and cables system”.
(It must be integrated with “gas and cables system”, of Vertex
and Backward EMC). 8
Turin - June B.Dulach D.Orecchini

9. - S_TUBES TRACKER: main dimensions inside the target spectrometer.
INFN-LNF - SPAS
- JUST TO REMEMBER -
-”Up and Down Rails” outer encumbrance: 893mm.
(Inserting System)
- S_TUBES TRACKER: main dimensions inside the target spectrometer.
-ST_Tracker: diam. 836mm.
-Electronics system encumbrance: 150mm.
-Gas system encumbrance: 50-60mm. 9
Turin - June B.Dulach D.Orecchini

10. 1° ITEM: HOW SUPPORT CABLES AND PIPE.
- S_TUBES TRACKER CABLING & GAS SYSTEM -
INFN-LNF - SPAS
1° ITEM: HOW SUPPORT CABLES AND PIPE.
A more long “Central Frame”, support the cables and bring out them outside the
magnet. (The “shape” of the cables could be optimized)
- At the same time, The “Central Frame” support the backward part of “pipe” (It’s
to be fixed the lenght and if there will be the cryo-pump inside.
Turin - June B.Dulach D.Orecchini

11. THIS HYPOTHESIS IS INCOMPATIBLE WITH THE BACKWARD EMC –
- S_TUBES TRACKER CABLING & GAS SYSTEM -
INFN-LNF - SPAS
THIS HYPOTHESIS IS INCOMPATIBLE WITH THE BACKWARD EMC –
Turin - June B.Dulach D.Orecchini

12. system” (At the end of the frame ?)The disconnection must be done
- S_TUBES TRACKER CABLING & GAS SYSTEM -
INFN-LNF - SPAS
-NB. It’s important where is the “disconnection zone” for “cables and gas
system” (At the end of the frame ?)The disconnection must be done
before the extraction of the Central Tracker. More is internal and much
more is complicate to reach.
-NB. We must remember to consider the patch-panels encumbrances.
They are not the same of the cables and pipes encumbrances.
Turin - June B.Dulach D.Orecchini

13. 2° ITEM: CENTRAL TRACKER INSERTING AND EXTRACTING PHASES.
- S_TUBES TRACKER CABLING & GAS SYSTEM -
INFN-LNF - SPAS
2° ITEM: CENTRAL TRACKER INSERTING AND EXTRACTING PHASES.
During the inserting and the exracting phases,the area between the “External support
structure” and the “Magnet” must be free.
- Or the “EMC support structure” will be removed before the Apparatus will be moved
on the “parking position”, or
....the “EMC support structure” must not only moved outside (along the magnet axis),
but also shifted in a lateral position or removed by the crane.
If the “Service external platform” is fixed, we’ll need a removable part of it (to allow
the positioning of the “EMC support structure”.
Turin - June B.Dulach D.Orecchini