1. Rf box (foil developments) Herman boer rookhuizen
LHCb Velo upgrade
Rf box (foil developments)
Frans mul
Mike de jong
Johan kos
Julian V.D. VELDE
Tjeerd ketel
Berend Munneke
Herman boer rookhuizen

2. Test box 3D milling
Frans Mul
5/24/2019

3. Inside milling
Frans Mul
5/24/2019

4. ACP 5080R Chemical composition
EN AW-5083 (AlMg4.5Mn0.7), acc. to DIN EN 573-3/3.3547
Separation layer:
~ 1mm wax with tree resin
Frans Mul
5/24/2019

5. SIKADUR 31CF SET A 6 KG €65,40
Frans Mul
5/24/2019

6. Milling speed 8000 r/min
Feeding mm/min
Frans Mul
5/24/2019

7. 2.574kg
Frans Mul
5/24/2019

8. Frans Mul
5/24/2019

9. Frans Mul
5/24/2019

10. Inductive wall thickness measurement during aluminium foil milling
Principle: Reduction of self inductance of a coil by the induced opposite magnetic field, due to eddy currents in a nearby conductor.
At high frequency these currents are only in a thin layer (skin effect) and can be used to measure insulator thickness (example: paint)
At medium frequency the conductor thickness and the skin depth can be of the same order.
Frans Mul
5/24/2019

11. Inductive thickness probe
Use NF probe at 10 kHz in stead of 600 MHz with LCZ meter at the VU (HP 4267A)
Frans Mul
5/24/2019

12. Frans Mul
5/24/2019

13. Self inductance calibration
Frans Mul
5/24/2019

14. 3D measurements by Berend
Frans Mul
5/24/2019

15. On 1/14/2011 5:15 AM Berend Munneke
The VELO Upgrade 0.3mm-foil-and-flange-out-of-one-piece has been tested to be leak tight below 10^-9 mbar l/s !! This is a fantastic result and will be hopefully soon be followed up by an L-shape foil structure test box.
Frans Mul
5/24/2019

16. 5D – Milling inside
Frans Mul
5/24/2019

17. SIKADUR 31CF with glass bubbles
5D – Milling outside
SIKADUR 31CF with glass bubbles
Separation layer:
~ 1mm wax with tree resin
Frans Mul
5/24/2019

18. Assembly
Frans Mul
5/24/2019

19. Front view
Frans Mul
5/24/2019