Table 1 Parameters of the Axesse® linacs

Leaf width at isocenter (mm)

5

Field size, maximum (mm)

400

Leaf individual travel range (mm)

200 (with respect to DLG^a)

Leaf and DLG^a or backup jaw combined travel range (mm)

350

Leaf interdigitation range (mm)

200

Diaphragm over-travel relative to central axis (mm)

120

Height of leaf (mm)

90

Leaf and interleaf transmissions (6MV)

0.47 %

Diaphragm/jaw speed, maximum (mm/s)

90

Leaf speed, maximum (mm/s)

35

Leaf and DLG combined speed, maximum

65 mm/s

Speed of gantry rotation (/s)

6.0 degree/s

Dose rate, maximum (MU/min)

Continuous, 660