Klystron having temperature modifying means for the electrodes therein and the focusing magnetic circuit

Claim 1

A BEAM TUBE COMPRISING A VACUUMIZED ENVELOPE INCLUDING AN ELECTRON GUN SECTION, A RADIO-FREQUENCY INTERACTION SECTION AND A COLLECTOR SECTION AXIALLY ALIGNED AND HERMETICALLY UNITED, SAID RADIO-FREQUENCY INTERACTION SECTION COMPRISING A PLURALITY OF INITIALLY SEPARATE COMPOSITE METALLIC BLOCKS BEING HERMETICALLY UNITED ONTO THE OTHER TO SERIALLY ALIGN SAID CAVITIES, AND A DRIFT TUBE SECTION EXTENDING INTO EACH BLOCK AND DEFINING AN ELECTRON DRIFT SPACE COMMUNICATING WITH THE CAVITY THEREIN, ADJACENT ENDS OF TWO SUCH DRIFT TUBES DEFINING AN INTERACTION GAP WITHIN EACH CAVITY, SAID METALLIC BLOCKS OF SAID RADIOFREQUENCY INTERACTION SECTION DEFINING A PLURALITY OF INTERCOMMUNICATION FLUID PASSAGEWAYS FOR THE PASSAGE OF FLUID COOLANT THERETHROUGH INCLUDING A FIRST SET OF PARALLEL PASSAGEWAYS EXTENDING TRANSVERSELY ACROSS THE RADIO-FREQUENCY INTERACTION SECTION TO CHANNEL FLUID COOLANT ABOUT A CORRESPONDING NUMBER OF SAID DRIFT TUBE SECTIONS, AT LEAST A SECOND SET OF PARALLEL PASSAGEWAYS EXTENDING TRANSVERSELY THROUGH SAID RADIO-FREQUENCY INTERACTION SECTION PARALLEL TO SAID FIRST SET OF TRANSVERSELY EXTENDING PASSAGEWAYS, AND A THIRD PASSAGEWAY HAVING A PORTION, EXTENDING TRANSVERSELY AND A PORTION EXTENDING LONGITUDINALLY OF THE RADIOFREQUENCY INTERACTION SECTION AND SERIALLY CONNECTING THE FIRST AND SECOND PARALLEL SETS OF PASSAGEWAYS.