Turbine rotor for a turbomachine

A turbine rotor for a turbomachine, comprising:

• a disk containing slots for mounting blade roots of blades, with each slot being defined by two adjacent teeth of the disk, with the blade roots comprising contact surfaces bearing on contact surfaces of the teeth of the disk,
• wherein foils are mounted on the teeth of the disk, with each foil having a general U-shape comprising first and second lateral bearing parts inserted between the corresponding contact surfaces of the blade roots and the teeth of the disk, and a central part connecting the first and second lateral bearing parts, facing a peak of the corresponding tooth of the disk, and defining a cavity between said peak and the foil,
• wherein each of the first and second lateral bearing parts includes an outer surface abutting the corresponding contact surface of the blade root, and an inner surface abutting the corresponding contact surface of the corresponding tooth of the blade, and
• wherein the turbine rotor further comprises:
• a device for supplying cooling air into said cavity, and
• a downstream shroud pressed against a downstream face of the disk so as to close, downstream, the cavities located between the teeth of the disk and the foils, with said downstream shroud having orifices for discharging air out of said cavities.