April-20, 2015MQXF Strand :Specification choices - A. Ghosh1 MQXF Strand: Available Implementations of various Cu/No-Cu in RRP April-20, 2015 LARP-CERN Video Meeting Arup K. Ghosh (BNL)
April-20, 2015MQXF Strand :Specification choices - A. Ghosh2 Review of Cu/Non-Cu ratio RRP – 108/ km (Ti-Ternary design) 13 billets, 6 with Nb/Sn=3.4, 7 with Nb/Sn=3.6 Specification requirement 53 % Copper (Cu/Non-Cu > 1.12) RRP – 132/ Km (Ti-Ternary), Nb/Sn ratio billets Specification requirement 52 % Copper (Cu/Non-Cu > 1.08) RRP – 144/ km (Ti-Ternary), Nb/Sn ratio billets Specification requirement 50 % Copper (Cu/Non-Cu > 1.00) Exception granted: 48.7 % Copper (Cu/Non-Cu > 0.95)
April-20, 2015MQXF Strand :Specification choices - A. Ghosh3 RRP-108/127 AVERAGE 0.028
April-20, 2015MQXF Strand :Specification choices - A. Ghosh4 Nomenclature AVG:Average of data Standard Deviation UCL:Upper Control Limit = AVG+3 LCL:Lower Control Limit= AVG-3 LSL:Lower Specification Limit
April-20, 2015MQXF Strand :Specification choices - A. Ghosh5 RRP-132/169 AVERAGE1.213 0.035
April-20, 2015MQXF Strand :Specification choices - A. Ghosh6 RRP-144/169 AVERAGE1.078 0.017
April-20, 2015MQXF Strand :Specification choices - A. Ghosh7 Summary of Data DesignNon-Cu %Cu/Non-Cu 3 Area Fraction SE Min Cu/Non-CuMin_Cu % 108/ % 132/ % 144/ % 144/ % 144/ % This can be achieved in production Area Fraction of SE (Sub-element) = Non-Cu% ÷ No. of Sub-elements 108/127 is a good option to meet Cu-Non-Cu requirements