Abstract :
The concept of pulse efficiency as a criterion for optimizing the design of pulse transformers, used in line-type modulators for linear electron rf accelerator systems (Linacs) is introduced. A definition suitable for this application is proposed, and factors relating to the value so defined are discussed in terms of typical modulator parameters and overall system efficiency. The classical theory of pulse transformer behavior is presented and developed further to show graphically the effect of individual parameter variations. Finally, performance achieved with a new design, physically, electrically, and economically interchangeable with one in production for over 15 years, is compared with that measured on several recently-produced systems.