Suspension System of the Barrel Toroid Cold Mass

The ATLAS Barrel Toroid consists of 8 racetrack coils symmetrically placed around the LHC beam axis. The coil dimensions are 25-m of length, 5-m of width and 1-m of thickness. Each cold mass is held in its cryostat by different types of supports. The paper describes the design, the tests and the behavior of each element during on surface test of individual coils.