Magnetron

A magnetron, comprising:

• an anode;
• and
• a dispenser cathode located coaxially within said anode,
• wherein the anode comprises:
• an internal structure forming a plurality of resonant cavities arranged around the dispenser cathode, and residing in a plane orthogonal to the dispenser cathode, and a plurality of radially outward anode cooling fins having a large surface area;
• and
• an outside wall that has top and bottom portions disposed above and below the internal structure respectively,
• wherein the internal structure comprises a first high thermal conductivity material, and the top and bottom portions of the outside wall comprise a low thermal conductivity material, and
• wherein the plurality of radially outward anode cooling fins comprise the first high thermal conductivity material, and are fixedly coupled to a conduction cooling block,
• wherein the conduction cooling block comprises:
• a second high thermal conductivity material, wherein the conduction cooling block has a first large surface area disposed adjacent to the large surface area of the plurality of radially outward anode cooling fins and has a second large surface area exposed to the atmosphere,
• wherein the first large surface area of the conduction cooling block is provided by at least one thick cooling fin interlaced with and slidingly fitted to the plurality of radially outward anode cooling fins, and
• the second large surface area of the conduction cooling block is provided by a plurality of grooves exposed to the atmosphere.