DUMMY LOAD FOR LARGE POWER AND HIGH FREQUENCY AND HIGH-FREQUENCY ACCELERATION CAVITY

摘要

PROBLEM TO BE SOLVED: To provide a reliable high-power, high-frequency dummy load which has high coupling reliability between a waveguide metal wall and a high-frequency absorber and hardly causes thermal stress breakage of the high-frequency absorber. ;SOLUTION: In a waveguide 12, a metal partition wall 12 is provided which partitions the inside of the waveguide 2 orthogonally to the incidence direction of a high-frequency electromagnetic field, and SiC tiles 14 as high-frequency absorbers are joined with both the surfaces of the metal partition wall 13. Consequently, even when a vacuum is held in the dummy load 11, the metal partition wall 13 does not need to secure a thickness needed as a vacuum wall. Consequently, the metal partition wall 13 may have arbitrary thickness and thermal stress generated owing to the difference in coefficient of thermal expansion between the metal partition wall 13 and SiC tile 14 is reducible. Further, the two SiC tiles 14 joined with the both surfaces of the metal wall so as to secure thermal stress balance are present in the waveguide 12, so the danger of the SiC tiles 14 being broken owing to an external mechanical shock is eliminated to securely protect the SiC tiles 14 against breakage due to the thermal stress.;COPYRIGHT: (C)1999,JPO