New quadrupoles have been designed to reach a maximum field gradient of 25 T/m. Magnetic measurements performed on these quadrupoles at the ESRF include the innovation of measuring a fully assembled girder consisting of 2 quadrupoles and 2 sextupoles (Figure 150) with a stretched wire. This process provides information on the final magnet alignment and the reciprocal influence of magnet yokes on their neighbours.

Fig. 150: New fully-assembled girder on the magnetic measurement bench.