Proposal for new LARGE CAPACITY CMM Coordinate measuring machine

1. 1962 First CMM DEA (Italy) Proposal for new LARGE CAPACITY CMM Coordinate measuring machine Ahmed CHERIF CERN Metrology lab. CLIC Technical Committee – 03.05.2011 EDMS : 1146912

2. outline Ahmed CHERIF EN/MME-MM • Overview of CMMs of the CERN Metrology lab. • Today and future needs • How to deal with a large capacity measurement • Example of DB girders • Metrology of CLIC Modules: open questions • Available long stroke machine on the market • Adapted environment to be set up for large CMM • Proposed solutions • Figures (budget and schedule) • Open discussion

3. CERN Metrology LABORATORY’s CMMs Accuracy : ± 0.3 +L/1000 um Accuracy : ± 3 um Accuracy : ± 3 um (+) LEITZ High accuracy 1200x1000x700mm FERRANTI 750x500x500mm OLIVETTI 4 AXIS 1600x900x600mm

4. HistorY CNGS ATLAS COLLIMATEUR LHCb PS Ahmed CHERIF EN/MME-MM

5. TODAY OLIVETTI 4 AXIS 1600x900x600mm Ahmed CHERIF EN/MME-MM The present means are not in line with present and future CLIC requirements (for large capacity and high precision)

6. treatment of a request for large capacity measurement 1St measurement Overlap 2nd measurement Ahmed CHERIF EN/MME-MM Measurement not feasible Measure with other means (less precise) Measured from two measuring stations with an overlap and merging of the results Measure with long probes and stylus to broaden measurement volume

7. MEASUREMENTs DONE ON CLIC DB Girders Courtesy of Dominique PUGNAT EN/MME-MM Both extremities of the girder are outside the measuring volume Support points are outside the machine table. Housing of the machine have been removed for the measurement

8. Long Probes used MICROCONTROLE & BOOSTEC GIRDERS 360 mm • Sphericity Error (typical) : 0.005 mm • With the used configuration : 0.012 mm. • Huge number of probes : 20 probes were necessary Ahmed CHERIF EN/MME-MM

9. The LAB Test Modules layout Current 2 Test Modules Type 0 installation (B169) MB DB MB DB Cradle system Concrete blocks for stretching devices Courtesy of AnastasiyaSolodko /BE-RF Ahmed CHERIF EN/MME-MM

10. CLIC MODULE New CMM mandatory to be defined as a function of : Ahmed CHERIF EN/MME-MM Final dimension of the CLIC Module Characteristics to be measured Required accuracy Accessibility of the features to be measured

12. Measuring range : From 2 m up to 10 m Accuracy: From MPEE [um]= ± 2.3 + L/400 to MPEE = ±7 + 7 L/1000 For 2 m : ±7.3 [um] For 4 m : ± 17.5 [um] For 6 m : ± 49 [um] For 10 m : ± 77 [um] Different types of machines available depending on required measuring range and accuracy Ahmed CHERIF EN/MME-MM

13. Input to define the right Machine Ahmed CHERIF EN/MME-MM • Technical criteria • Overall dimensions of the parts to be measured • Features to be measured • Needed accuracy • Number of components to measure • Measuring time to be minimized? • Weight of the module • Environment to be provided • Complementarity with BE/ABP-SU • Are other CLIC experiments or detector applications interested in such machine?

14. Measurement laboratory Ahmed CHERIF EN/MME-MM Temperature stability Size of the laboratory (Height = vertical T gradient) Machine weight Admissible load on the ground Civil-engineering? Handling devices Vibration stability …

15. Proposed Solutions Ahmed CHERIF EN/MME-MM The accuracy is linked to the measuring volume: • Option A: • Machine capacity : 2.4 metres • Accuracy : 5 to 10 micrometres • Minimum surface of the laboratory: 50 to 70 m2, 3.8 m height, service temperature of 20 °C ± 1 K. • Option B: • Machine capacity : 4 metres • Accuracy : 15 to 20 micrometres • Minimum surface of the laboratory : 80 to 100 m2, 5 m height, service temperature of 20 °C ± 1 K.

16. Budget & Schedule Budget Schedule Ahmed CHERIF EN/MME-MM

17. THANK you for your attention Ahmed CHERIF EN/MME-MM Questions and/or Comments are welcome Decision ?

18. Ahmed CHERIF EN/MME-MM Annex

19. Other applications Ahmed CHERIF EN/MME-MM

20. ZEISS ACCURA Ahmed CHERIF EN/MME-MM

21. LEITZ PMM-F Ahmed CHERIF EN/MME-MM

22. LEITZ PMM-G Ahmed CHERIF EN/MME-MM

23. DEA GLOBAL Ahmed CHERIF EN/MME-MM

24. DEA LAMBDA Ahmed CHERIF EN/MME-MM