Title :
Experimental and analytic studies of an RF load resistor
Author :
Borovina, D.L. ; Gahl, J.M. ; Humphries, S., Jr. ; Rees, D. ; Toole, L.
Author_Institution :
New Mexico Univ., Albuquerque, NM, USA
Abstract :
The pulsed output of an 850-MHz klystron was directed into a load assembly containing a water-cooled, 50-ohm resistor. The load was systematically subjected to high peak-power pulses from the klystron. Several thin-film resistors were tested and exhibited various damage patterns for different combinations of peak microwave power (33 kW-500 kW) and heat input. In order to better understand the phenomena observed, the electromagnetic field distribution inside the resistor housing was studied with WaveSim, a two-dimensional, finite-element scattering code. The conformal mesh of the program allowed accurate representations of the complex assembly geometry
Keywords :
accelerator RF systems; klystrons; thin film resistors; 33 to 500 kW; RF load resistor; WaveSim; complex assembly geometry; conformal mesh; damage patterns; electromagnetic field distribution; klystron; peak microwave power; resistor housing; thin-film resistors; two-dimensional finite-element scattering code; Assembly; Cogeneration; Electromagnetic fields; Electromagnetic heating; Finite element methods; Klystrons; Radio frequency; Resistors; Testing; Transistors;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.792933
