Self-pumping vacuum rotor system

A vacuum rotor system comprising a hollow rotor with a rotor jacket that is open at both ends perpendicular to the axis of rotation and with at least two hubs that are connected to the inside of the rotor jacket and that are suitably mounted in appropriate bearings so that the rotor can rotate, also comprising a machine housing that encloses the rotor and that has at least one gas outlet opening to discharge gases from the machine housing, also comprising a vacuum system that is connected to the gas outlet opening and that has at least one forepump for purposes of generating a fore-vacuum pressure in the machine housing, and also comprising at least one first gas removal device with a gas pick-up opening that is arranged in the machine housing between the hub and the appertaining open end of the rotor jacket, at a suitable distance from the inside of the rotor jacket without making contact with the rotor jacket, in order to efficiently pick up gas whereby said first gas removal device is connected to the gas outlet opening, in order to discharge the picked-up gas and it is arranged in such a way that, at a rotational frequency greater than 200 Hz, the rotor itself conveys part of the gas flow that, due to the rotation of the rotor, is moving along the inside of the rotor jacket, at least into the first gas removal device, and consequently, the rotor itself can reduce the gas pressure in the machine housing from the level of the fore-vacuum pressure to a lower operating vacuum pressure.