Patent ID: 11942311
Assignee: OERLIKON SURFACE SOLUTIONS AG, PFäFFIKON
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 7:
8. A vacuum chamber for performing a plasma treatment comprising a plasma treatment area which is enclosed by chamber walls, and a plasma source comprising:
at least one cathode arranged in the vacuum chamber for cathodic vacuum arc evaporation with an arc anode which is connected to the vacuum chamber;
a shield which can be arranged in front of the cathode;
at least one electrode arranged in the vacuum chamber, wherein the electrode comprises a working surface for collecting the electrons emitted from the cathode;
wherein
the working surface is a two-dimensional surface for collecting the electrons emitted from the cathode, and the two-dimensional surface has a first orthogonal extension and a second orthogonal extension to a surface normal, wherein the first orthogonal extension is perpendicular to the second orthogonal extension and a length ratio of the first orthogonal extension to the second orthogonal extension is between 0.1 and 1,
at least one magnet for generating a magnetic field which acts on the working surface of the at least one electrode is arranged in, on or in and on the vacuum chamber,
the at least one electrode comprising a first electrode having a first working surface for collecting the electrons emitted from the at least one cathode and a second electrode having a second working surface for collecting the electrons emitted from at least one of the at least one cathode and a plurality of cathodes, and
the at least one magnet comprises a first front-side magnet for generating a front-side magnetic field arranged in an area of the first working surface, and a second rear-side magnet for generating a second rear-side magnetic field arranged behind a second working surface.