Metrology of 11 T Poles Drawing no LHCMBHC

Metrology of 11 T Poles Drawing no. LHCMBH_C 0054 ind. F CONTROLLER : Bartosz. Wojciech. Bulat@cern. ch 30. 10. 2020 This document contains 19 pages EDMS 2393533

Drawings as known by MME Metrology 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 2/19

Datum A – according to ISO 5459: 2011 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 3/19

Surface tolerance according to ISO 1101: 2012 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 4/19

CONDITIONS OF MEASUREMENT – Temperature: 20°C ± 1°C – Units of measurement: mm – Measured with Coordinate Measuring Machine (CMM) – Machine precision: Single point w. r. t. ISO 10360 -2 MPEE 0 = 1. 2 + L/500 µm – Machine verified and calibrated once a year – Measured using contact method – For each geometrical feature (surface) more than 100 points collected in scanning mode – Each scan filtered according to ISO standards 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 5/19

Reference 1 As on drawing - smallest error on the two angular surfaces 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 6/19

Reference Points from the whole surface of the part were used to calculate each reference Section Y+ Part no. 687 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Section Y- Page 7/19

Results - Reference 1 Part 742 – Series KB 18 Section Y+ -0. 0086 0. 0013 0. 0454 Section Y- 0. 0421 -0. 0075 0. 0043 0. 0765 -0. 0042 0. 0790 -0. 0005 0. 0063 Tolerance +/- 0, 010 mm – all around 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 8/19

Results - Reference 1 Part 742 – Series KB 18 Tolerance +/- 0, 010 mm – all around 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 9/19

Reference 2 Smallest error on the top flat surface 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 10/19

Results - Reference 2 Part 742 – Series KB 18 Section Y- Section Y+ 0. 0124 0. 0207 0. 0242 -0. 0038 -0. 0070 -0. 0098 0. 0247 -0. 0028 0. 0191 0. 0283 Tolerance +/- 0, 010 mm – all around 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 11/19

Results - Reference 2 Part 742 – Series KB 18 Tolerance +/- 0, 010 mm – all around 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 12/19

Reference 3 Bestfit – smallest error on all surfaces Important: All points have the same importance More points on the surface = Greater influence on the results 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 13/19

Results - Reference 3 Part 742 – Series KB 18 Section Y- Section Y+ -0. 0062 0. 0068 0. 0054 0. 0429 0. 0384 0. 0078 0. 0427 0. 0001 0. 0103 0. 0433 0. 0102 Tolerance +/- 0, 010 mm – all around 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 14/19

Statistics - Reference 1 Chart of the results of 260 pcs Tolerance Newest parts 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 15/19

Results - Reference 1 Differences – Best/Worst part Reference 1 0. 0048 -0. 0144 0. 0157 0. 0136 0. 0067 0. 1822 0. 1785 -0. 0008 -0. 0035 Part No. 135 -0. 0099 Part No. 653 Tolerance +/- 0, 010 mm – all around 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 16/19

Comparison Report of the supplier – CERN report Part no. 705 Unknown reference Reference 1 -0. 0088 0. 0016 0. 0799 0. 0774 -0. 0038 Supplier CERN Tolerance +/- 0, 025 mm – all around 30. 10. 2020 0. 0076 Tolerance +/- 0, 010 mm – all around BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 17/19

First test batch in 2018 Parts 3, 5, 6 – EDMS 1905248 Measured by CERN in Reference 1 Part No. 3 Part No. 5 Part No. 6 Tolerance +/- 0, 010 mm – all around 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 18/19

Summary – Parts do not comply with the +/- 0, 010 [mm] all around shape tolerance – First parts were measured in February 2018, next control was done in June 2020 when parts numbered 700+ were already manufactured – Visualisation on the supplier report shows the tolerance which does not comply with the CERN drawings available in CDD – Visualisation on the supplier report does not show the all around shape of the part as specifed on the CERN drawing 30. 10. 2020 BULAT Bartosz- EN-MME/MM – EDMS 2393533 Page 19/19