Main data from MQXF witness reports Bernardo Bordini

Main data from MQXF witness reports Bernardo Bordini, Dario Baffari, Jerome Fleiter TE-MSC-SCD Technical meeting to review coils for MQXFB 01– 21/10/2020

Load-Line Margin § Large margin on the load-line around 25 % B. Bordini, D. Baffari, J Fleiter - Main data from MQXF witness reports – 21/10/2020 2

Estimated Coil RRR § Large RRR margin § Samples in the non connection side show lower performance § Coils <CR 109 were reacted with a different HT and had RRR samples only in CC B. Bordini, D. Baffari, J Fleiter - Main data from MQXF witness reports – 21/10/2020 3

Minimum RRR in extracted witness samples § Large RRR margin § Samples in the non connection side show lower performance B. Bordini, D. Baffari, J Fleiter - Main data from MQXF witness reports – 21/10/2020 4

RRR of round samples Small vs Large Oven § The RRR on the connection side is not much lower than the RRR of samples reacted in a small oven § The CC samples of coils 114 & 115 show a larger degradation B. Bordini, D. Baffari, J Fleiter - Main data from MQXF witness reports – 21/10/2020 5

RRR of round Samples from a reference spool § Data from a reference spool confirm larger RRR degradation in coils 114 from and 115 § From Coil 116 significant improvement of the coils heat treatment conditions § In particular in coils 117 and 118 the difference between CC & Co. C has been reduced B. Bordini, D. Baffari, J Fleiter - Main data from MQXF witness reports – 21/10/2020 6

Complete reports references CR 104 EDMS 2230313 CR 105 EDMS 2230314 CR 107 EDMS 2230316 CR 108 EDMS 2230312 CR 109 EDMS 2230317 CR 110 EDMS 2270133 CR 111 EDMS 2316935 CR 112 EDMS 2316937 CR 113 EDMS 2323982 CR 114 EDMS 2332653 CR 115 EDMS 2385178 CR 116 EDMS 2399925 CR 117 EDMS 2414961 CR 118 EDMS 2414962 CR 119 EDMS 2424616 B. Bordini, D. Baffari, J Fleiter - Main data from MQXF witness reports – 21/10/2020 7