PISCES II : 2.5-D RF CAVITY CODE, AN EXTENSION OF SUPERFISH

Yoshihisa Iwashita
Accelerator Laboratory, Nuclear Science Research Facility
Institute for Chemical Research, Kyoto University
Gokanosho Uji, Kyoto 611, JAPAN

Abstract

The RF cavity code PISCES II can evaluate all the eigenfrequencies and fields for arbitrarily shaped axially symmetric RF cavities. The solutions include symmetric (m=0) and asymmetric modes (m>0) with 2.5-D technique of assuming the sin mq and cos mq dependencies. Using Finite Element Method with Nedelec elements, the electric or magnetic components ( (Eq,Er,Ez) or (Hq,Hr,Hz) ) are calculated[ ]. The resulted eigenvalue system has many zero-eigenvalue solutions, which can be filtered out by using zero-filter technique from the set of solutions. The eigensolutions of the specified number are obtained simultaneously from non-zero lowest frequency.
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