Local cooling contribution@ LAPP – Annecy /IN2P3 ATLAS ITK Local cooling contribution@ 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

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

1 – The IBL adventure in the pit The PP1 region

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

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

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)

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

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

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

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

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

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

Thank you 13