Dan Cheng 6/11/2015 QXF coil measurements plan at LBNL

Cross Section Measurement Locations 6/11/2015QXF Coil CMM measurements at LBNL2 Same axial locations as being performed at BNL – With the addition of one more measurement location at mm (29.22”) for the SG location

CMM Measurements 6/11/2015QXF Coil CMM measurements at LBNL3 LBNL uses Zeiss Accura for CMM, using built-in Calypso for post-processing – But we have not been able to weight different surfaces for alignment – All surfaces “best-fit” to reference geometry with equal weight

Post-processing Comparisons 6/11/2015QXF Coil CMM measurements at LBNL4 Prior to identification of the asymmetry issue, all HQ magnets were built using data processed by the Calypso software for overall coil size LBNL now has the ability to post-process, with weighting, with both Polyworks and Spatial Analyzer We are performing an apples-to-apples comparison – BNL Coil measurement data (Faro Arm) – LBNL (Zeiss) measurement data, processed with: Calypso (for historical comparison) SA (for comparison with BNL processing) Polyworks (additional process check)

Fitting the profiles 6/11/2015QXF Coil CMM measurements at LBNL5 Two methods per cross section: – “Global” best fit Objective is to compare with prior Zeiss/Calypso post processing – “Weighted” best fit Objective: to compare with BNL data and to determine coil asymmetry Global: Midplanes + OD + Alignment Key Weighted: OD + Alignment Key

Status 6/11/2015QXF Coil CMM measurements at LBNL6 Data is being processed on a few cross sections before applying to the rest of the cross sections and coils All four coils will have to be measured again next week, since axial locations of cross sections did not match those made by BNL