Electron beam generator and emission cathode

An electron beam generator arrangement having a heated electron emission cathode, and comprising an electrically insulating supporting body which, at one side thereof is adapted for mounting to an installation, and at another side thereof is adapted for receipt of the electron emission cathode, the arrangement including a plurality of abutment surfaces acting as mechanical position references for at least said electron emission cathode and for at least one additional part of the generator arrangement, the arrangement including at least one quick release device for a rapid mounting of the generator arrangement, located at the one side of said supporting body, said quick release device comprising at least one projecting bolt having a radial conical bore, the installation having a receiving bore for said bolt, a radial clamping screw including a conical tip adapted to be driven into said bore, whereby the axis of said screw is offset relative to the axis of the bore in said bolt when the bolt is inserted and prior to a driving in of the screw so as to clamp the generator arrangement at the installation upon a driving in of the screw via the conical bore at the bolt.

An electron beam generator arrangement having a heated electron emission cathode, and comprising an electrically insulating supporting body which, at one side thereof is adapted for mounting to an installation, and at another side thereof is adapted for receipt of the electron emission cathode, the arrangement including a plurality of abutment surfaces acting as mechanical position references for at least said electron emission cathode and for at least one additional part of the generator arrangement, the arrangement including two metal cathode connection supporting blocks connected to the supporting body at said other side thereof.

An electron beam generator arrangement having a heated electron emission cathode, and comprising an electrically insulating supporting body which, at one side thereof is adapted for mounting to an installation, and at another side thereof is adapted for receipt of the electron emission cathode, the arrangement including a plurality of abutment surfaces acting as mechanical position references for at least said electron emission cathode and for at least one additional part of the generator arrangement, the supporting body being substantially in the shape of a parallelpiped, the cathode having an emission surface located substantially at one corner of a surface of said parallelpiped, and wherein heating power supply lines for the cathode are located at a side surface of said parallelpiped which does not form said one corner.

An electron beam generator arrangement having a heated electron emission cathode, and comprising an electrically insulating supporting body which, at one side thereof is adapted for mounting to an installation, and at another side thereof is adapted for receipt of the electron emission cathode, the arrangement including a plurality of abutment surfaces acting as mechanical position references for at least said electron emission cathode and for at least one additional part of the generator arrangement, wherein the supporting body is mounted to the installation and to the additional part by means of screwing with threads in the installation and additional part and no threads being in the supporting body.

An indirectly heated electron emission cathode arrangement having a rigid emission surface and a heating device located at a predetermined distance from the emission surface, in which

• the heating device is a heating current conductor which is heated due to a joulean effect;
• and
• the rigid emission surface is rigidly connected to the heating current conductor as a structural unit therewith, the emission surface being a front surface of a pot in which the heating current conductor is located, said front surface being exchangeable.