# Abstracts

## XX International Linac Conference

## TUA19 (Poster)

**Presenter: **Roger H. Miller (SLAC)

** email: **nkroll@ucsd.edu

**Status: **NoShow - No full text
# Equivalent Circuit Predictions and Microwave
Measurements of S Matrix Parameters for the RDDS Damped
Detuned Structure*

V.Dolgashev, R.Jones, N.Kroll**, Z.Li, R.Miller, J.Wang
(SLAC), T.Higo (KEK)

The parameterization of the equivalent circuit model of the Damped
Detuned Structure has been based upon simulation of the dipole modes of the
individual cells of the structure [1]. Prediction of the S Matrix parameters of the
actual four manifold structure requires simulation of the monopole and quadrupole
modes as well. This having been done, the anticipated absence of monopole and
quadrupole cell modes in the frequency range of interest makes the extension of the
theory to include the four manifolds straightforward. The results of this extension
will be presented and discussed. The results of microwave measurements will also be
reported. Comparison between the two inposes severe requirements on the identity of
the propagation characteristics of the four manifolds.

[1] R.Jones,K.Ko,N.Kroll,R.Miller, and K.Thompson. 'Equivalent Circuit
Analysis of the SLAC Damped Detuned Structure.' Proceedings of the 5th European
Particle Accelerator Conference, p 1292, (1996)

* Work supported at SLAC under U.S.DOE contract DE-AC03-76SF00515 and at
UCSD under U.S.DOE grant DE-FG03-93ER40759.

** also at UCSD

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