Magnetic measurements of a CEA/IPHI 28.5° dipole for the Linac4 diagnostic beam line

This reports summarizes the results of a recent test campaign carried out on a spectrometer dipole for the Linac4 diagnostic line. These results include point-like measurements done with NMR and Hall effect probes and are intended as a cross-check of a more extensive campaign carried out at Sigma Phi. They are aimed specifically at the issue of the reproducibility of the field on different cycling conditions. In the Appendix, a field control algorithm which can be used to guarantee the requested 0.1% reproducibility is spelled out in full detail.