1. Local cooling contribution@ LAPP – Annecy /IN2P3
ATLAS ITK
Local cooling LAPP – Annecy /IN2P3
1 - The IBL adventure
The concept
In the pit
The industrial
qualification
2 - ITK application
* To start: illustration
* Photo tank which flamed
* Not D ' similar examples for the LAPP
* Drawing: result D ' a simulation
* Simulation carried out afterwards
Alpine pixel detector
Special thanks to Eric Vigeolas
LAPP ATLAS PIXEL team
Pierre Barroca, Pierre-Yves David, Pierre Delebecque, Nicolas Geffroy, Stephane Jézequel, Remi Lafaye, Jessica Leveque, Nicolas Massol, Jean-Marc Nappa, Olivier Prevost, Thibaut Rambure, Sébastien Vilalte, Ben Smart

2. General view 1 – The IBL adventure in the pit
IBL flexible cooling lines
IBL splitter box
IBL rigid lines

3. 1 – The IBL adventure in the pit
The PP1 region

4. The PP1 region Electrical break LAPP Fitting Bent Ti pipe
1 – The IBL adventure in the pit
The PP1 region
Electrical break
LAPP Fitting
Bent Ti pipe
LHC Beam pipe

5. LAPP fitting Qualities
1 – The IBL adventure – the LAPP fitting
LAPP fitting Qualities
Titanium
20 safe mounting /dismounting at least
30 to -40 °C
1 Grad
10-8 mbar.l.s-1
Pressure up to 150 b
Very small 8 mm
Mass=2.2g
Tightening torque ~2N.m 5

6. 1 – The IBL adventure – the LAPP fitting
Why not using the current end-of-stave Pixel aluminium fittings for IBL ?
Problems and questions :
Leaks on the current disks,
Uncertainties on the disassembly capability
We want to use of titanium instead of aluminium (better for corrosion, less thermal contraction, good X0 )
Lessons from pixel detector ? :
Need real quality management
Need qualifications
Need procedures for tests, manufacturing controls and mounting
Need tightening control
The ATLAS tracker community didn’t want any custom fittings !!
No industrial standard solution was complying with the IBL specifications (especially the envelope)

7. Fitting welded on a titanium pipe (sample for qualification)
1 – The IBL adventure – the LAPP fitting/ EB welding
Fitting welded on a titanium pipe (sample for qualification)
Electron Beam welds

8. A possible improvement of the design
1 – The IBL adventure – the LAPP fitting/ EB welding
The hi-tech part
Titanium elbow (250u thick)
Connector nut
Ceramic-Titanium brazing
Temporary connector for testing
Stainless steel pipe Pipe will be cut to final length somewhere here
Ceramic – stainless steel brazing
Isolator
(ceramic electrical break)
Spherical side of IBL connector(protected)
A possible improvement of the design

9. How to obtain an “industrially qualified” fitting ?
1 – The IBL adventure – the LAPP fitting/ industrial like qualification
How to obtain an “industrially qualified” fitting ?
We are able to manage the R&D phases
Industrial validation and qualification must be carried out according to specific rules/standards
Experts (quality management and leak tightness) were asked to audit our project and give advice to define and implement the industrialisation and qualification procedures
Production operations (machining, geometrical and dimensional controls, coating, marking) are made by industrial companies 9

10. I have been pressurized to 640 Bars and I am still leak-tight!
1 – The IBL adventure – the LAPP fitting/ industrial like qualification
I have been pressurized to 640 Bars and I am still leak-tight!
About 300 fittings produced for validation/qualification and production
200 EB weldings
All elements were marked and well protected
10 different types of tests performed 10

11. A possible improvement of the design (not validated right now)
1 – The IBL adventure – developments for the future
A possible improvement of the design (not validated right now)
More compact solution
Fitting-ceramic-pipe (Titanium or stainless steel) brazed together.
Ti pipe
Fitting
Ceramic

12. 2 – ITK application
A small fitting (+ electrical break) for LHC tracking detectors was successfully designed and produced
Can be used for any similar application
No need to invent the wheel once again
Knowledge transfers to industrial structure for wider production
Designs compatible up to ID 3mm
No new “IBL like” developments
New design to fit a OD 3.3mm pipe – Produced end 2017 12

13. Thank you 13