The Super Proton Synchrotron (SPS) is the second-largest machine in CERN’s accelerator complex. Measuring nearly 7 kilometres in circumference, it takes particles from the Proton Synchrotron and accelerates them to provide beams for the Large Hadron Collider, the NA61/SHINE and NA62 experiments, the COMPASS experiment. 

After the complete decommissioning of ARCON, CROME took over the ionizing radiation monitoring of BA1, BA2, BA4/ECA4, BA5 and BA6.

CROME at BA2