wp9 its mechanics and cooling
DESCRIPTION
WP9 ITS Mechanics and Cooling. 17 February 2014. Corrado Gargiulo. WP9 Objective 1. Finalization of IB geometry (inputs from WP1 and WP2) and layout (with WP6 and WP10). Finalization of OB geometry (with inputs from WP1 and WP2) and layout (with WP7-WP8 and WP10). - PowerPoint PPT PresentationTRANSCRIPT
WP9 ITS Mechanics and CoolingCorrado Gargiulo
17 February 2014
1. Finalization of IB geometry (inputs from WP1 and WP2) and layout (with WP6 and WP10). Finalization of OB geometry (with inputs from WP1 and WP2) and layout (with WP7-WP8 and WP10).
BP radius OR=18mm Vs 19.8mm (WP1,WP2 and MFT)
Layer 0 radius Distance from BP wall
Middle Layer radius TDR6/TDR7
Stave width Chip size i.e. Layer 0 radius, FPC layout
Stave length Layer radius, Power regulator
WP9 Objective 1
BP Outer Radius =………(19.8mm TDR)Layer 0 Mid Radius =……… (23.38mm TDR)
19.8 BeamPipe (BP) layout at C-side with an Outer Radius (OR) 19.8 mm has been finalized and proposed to MFT, with a possible disks distribution that should match MFT requirements.ITS/MFT InnerEnvelope OR 21.8mmBP ITS clearence 2mm; BP MFT clearence 2mm ‐ ‐BP alignment tolerance 3.3mm
18.0 BP OR reduction from 19.8 to 18mm imposes severe constraints on the BP installation tolerances that requires a feasibility study. Providing the layout above mentioned (19.8) is validated by MFT group, the BP OR of 18mm will not be anymore a requirement for MFT. ITS: BP OR reduction to 18mm will not bring evident gains, see today presentation from Andrea (WP1), Iouri (WP2). ITS/MFT InnerEnvelope OR 20.0mmBP ITS clearence 2mm ; BP MFT clearence 2mm ‐ ‐BP alignment tolerance 1.5mm
19.0 if both ITS and MFT will not need a BP OR 18mm we can assume ITS and MFT layout based on a 19.8mm BP OR (ITS/MFT InnerEnvelope OR 21.8mm). A compromise on the BP OR, 19mm, could be then considered. This will allow to enlarge the clerance between BP and ITS/MFT envelope from 2mm to 3mm and keep the installation tollerance of the BP at 2.5mm. This proposal is based on the fact that the distance of beampipe to the first layer of the ITS is much less important than assumed earlier.ITS/MFT InnerEnvelope OR 21.8mmBP ITS clearence 2.8mm; BP MFT clearence 2.8mm ‐ ‐BP alignment tolerance 2.5mm
5
21.36-18= 3.36mm23.38-19.8= 3.58mm
R 19,0
23.38-19.0= 4.58mm
19.8 (TDR)
19.0
18.0
Chip width 14,00mm
distance layer-0 (mid) from Beam Pipe Outer wall
Reduced beam pipe radius by 0.8mmNo change in the ITS layers radius (TDR)Solution endorsed by this
ITS plenary meetingSee Andrea presentation
6
Beam pipe layout: development of the two options 18mm, 19.8 inner radius
18mm outer radius
19.8 mm outer radius
Beam pipe layout and support vs MFT:Proposal sent to MFT, under evaluation…
01
23
4
5
η= -3,7 (3°)
Middle Layers Radius = …… (196.05; 245.45; TDR)
Layer n.
Stave number
Rmax (mm)
Rmin (mm)
Lenght active zone (mm)
Modules per half-stave
6 48 394,9 391,8 1475 75 42 345,5 342,3 1475 74 30 247,0 243,9 843 43 24 197,7 194,4 843 4
TDR 6 (TDR)
Layer n.
Stave number
Rmax (mm)
Rmin (mm)
Lenght active zone (mm)
Modules per half-stave
6 48 394,9 391,8 1475 75 42 345,5 342,3 1475 74 36 296,4 293,3 1054 53 30 247,0 243,9 1054 5
TDR 7
Increase number of stave Increase number of
modules per stave Increase stave length
TDR 6
TDR 7
Pseudo-rapidity coverage
-1.39-1.51
-1.31-1.51
-1.39-1.51
-1.34-1.50
The pseudorapidity coverage of the detector layers refers to tracks originating from a collision at the nominal interaction point (z= 0)
TDR 6
η= -2,5 (9.4°)
η= -3,7 (3°)
η= -1,22 (32.8°)
78
763 (1526) 450 (900)
900
455 493 531 569 688 768
absorber
STAVE LENGHT 1526, 900
beampipe
MFT disks
BP SUPPORT
430
TDR 7
900
812
455 493 531 569 688 768
763 (1526)548 (1096)
absorberSTAVE LENGHT 1526, 1096
beampipe
MFT disks
BP SUPPORT
430
Stave width=…… (15mm TDR)
• Chip size i.e. Layer 0 radius,
• FPC layout
Chip width 14.0mm needed for BP 18mm
Layer n.
Stave number
Rmax (mm)
Rmin (mm)
Lenght active zone (mm)
Modules per half-stave
6 52 394,5 391,5 1474.8 75 46 348,6 345,5 1474.8 74 34 258,2 255,0 842.7 43 28 212,3 209,1 842.7 4
Layer n.
Stave number
Rmax (mm)
Lenght active zone (mm)
2 20 35.9 2701 16 28.6 2700 12 35.9 270
The same chip adopted on the outer layers
Stave width=14mm
IB Stave width=15,7 mm
FPC width 15,7mmChip 15mm (TDR)
FPC
OB Stave width=15,7 mm
FPC width 15,7mm
1,41
Electronics components on the FPC will close this gap
TBD cold plate displacement to re-open the gapfrom 1.41 to 2mm?
Stave length Layer radius, Power regulator
300
320
IB Stave length=320mm
needed for IB 4th layer
Being considered in TDR7.
chip
290
9.6
IB Stave length=290mm (TDR)
270.8
1502 OL - 870 ML
15.7 OL
module
module
14.85 ML
OB Stave length
BP outer radius 18/ 19.8/ 19
Layer 0 mean radius 23.38 /21.36(BP18)
Middle Layer radius TDR6 / TDR7
Stave width 14 (BP 18)+1(FPC) / 15+1(FPC)
Stave length (cold plate) IL 320 (4th IB layer)
IL 290=9.6+270.8+9.6
ML 870= 14.85+840.3+14.85 1066
OL 1502=15.7+1470.6+15.7
Summary (TDR, endorsed in this meeting)
backup
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staveInner barrel
Inner Barrel stave
o Stiffness test sag <10 µm (~7µm )
o Thermoelastic test on going
o Production of new stave with high dimensional accuracymoulds accuracy needs correction next
IB
QULIFICATION MODULE PRODUCTION (FINAL QUALITY)
DEVELOPMENT TEST (on EM)
o Thermal test OK
25
o Vibrational test >100Hz
167 Hz
status
o Dimensional next sag
On going
26
20µ
70µ
20µ
30µ
45µ
(30µ)
45µ
45µ
Alternative option under investigation to further improve stiffness and thermo-elastic stability
Change of Carbon fleece with K13D2U(same weight)
Inner Barrel stave
27
End wheelsInner barrel
See Antonello presentation for FPC and cable layout
next
Definition of end-wheel QM design and assembly procedure: joint with WP6
statusProto produced based non EM design
Inner Barrel end-wheels
Feed through for cable and pipes
Production of set-pins and stave connectors and dimensional check
29From Antonello, Antoine
30
StaveOuter barrel
o Produced Stave Full length Proto Baseline OK
Outer barrel stave
ENGINEERING MODULE PRODUCTION
o Cold plate 2 pipes ID=2.67mm full length for WP8
31
DEVELOPMENT TEST
o Bending test &FEA sag ≈95µm
o Thermal (150 and 300 mW/cm2), hydraulic test Ok
o Vibrational test 1st freq=51Hz; dynamic response ongoing
o Thermoelastic test αexp ~ 12 x 10-6 K-
1
On spaceframe (Carbon fiber K13 D2U)
On coldpalte
status
on going spaceframe
o Improve stave stiffness by replacing 2 M55j plies with K13D2U.
Full k13 spaceframe has shown to be too brittle Being prepared, spaceframe M55j baseline Being prepared, spaceframe M55j with additional layer Being prepared, spaceframe M55j with two layers K13d2U
o Further improvement of stave stiffness: increase stave section, need new mould
Outer barrel stave
3333
20µ
90µ
20µ
30µ
45µm
30µ
70/45µm
45µm
ID=2.67mm, wt=0.065mm
ID=2.00mm;wt=0.025mm
Cold plateo Alternative option under investigation to further
improve stiffness and thermo-elastic stability
Mould under modification (for ID 2mm), Grenoble New 2mm ID pipes arrived K13 form Berkley arrived
on going Outer barrel stave o Production of 1 cold plate 1,5m for WP8o Production of 1 cold plate 300mm for thermal test
34
End wheelsOuter barrel
EW
300mm
300mm
300mm
150mm
300mm
on going
statusEM design
Definition of cooling modularity and cooling schemeDefinition of electrical and hydraulic connection best location TBD
nextDefinition of end-wheel QM design and assembly procedure
Outer barrel end-wheels
36
cage
37
cage
Study on rails to optimize half barrels closure
on going
Reduce half barrel parallel translation to minimum
Structural shellITS CYSSs MFT service barrel Cage
TPC CageMFTservice Barrel ITS Outer Barrel
ITS Inner Barrel
Cage: Dav=1085mmMFT: Dav= 990mmITS_OB: Dav=908mmITS IB: Dav= 97mm
preliminary
Total 5-6mm carbon~ 2-2.3%
Cage (2-3mm*)
MFTService Barrel (1.6*) mm
ITS Outer Barrel (1.2mm*)
ITS Inner Barrel (0.2mm*)
Cage
MFT
ITS OB
ITS IB
preliminary
*skins: CFRP X0≈25cm
skin
skincore
core: closed cell foam X0 ≈ 1380cm
sandwich
41
Materials
“polyimide tubes”
o Fiber K13C2U received from Eric (Berkley) to be used in the cold plates proto production
o Core material: Airex R-82 foam Ongoing
o Water absorption and erosion resistance check Ongoing
“connectors”
“composite ”
o Evaluation of best material Macor, Durostom 203 –PEEK vs Accura Bluestone (3d print) Ongoing
CERN REFERENCE DOCUMENTS: • The Use of Plastics and other Non-Metallic Materials at CERN with respect to Fire Safety and Radiation
Resistance- (CERN-IS-41)• Compilation of radiation damage test data, Part I, II, III, IV ( CERN 79–04, CERN 79–08 , CERN 82–10,
CERN 89–12 )
on going Materials
Adhesive tape (60 µm) 3M 467Mp 200MP received from Eric (Berkley) to be evaluated for Module fixation
“glue-adhesive ”
Development of Material database and CERN standard conformity verification for all mechanical parts