The ATLAS magnet test facility at CERN

The ATLAS magnet system consists of a barrel toroid (BT), two end-cap toroids (ECT) and a central solenoid (CS). The BT with overall dimensions of 20 m diameter by 26 m length is made of 8 coils placed in their individual cryostats and symmetrically assembled around the central axis. The ATLAS magnet test facility is being completed at CERN and will host in the next years to come pairs of BT coils at the same time as well as the ECT and the CS systems already fully assembled. Two model coils will be tested in the years 2000-2001, the B00 model coil and the B0 model coil, a 9 m short version of the BT coil built to verify the functionality and the construction concepts of the BT.