Higher Dipole Bands in the NLC Accelerating Structure

Abstract

We show that scattering matrix calculations for dipole modes between 23-43 GHz for the 206 cell detuned structure (DS) are consistent with finite element calculations and results of the uncoupled model. In particular, the rms sum wake for these bands is comparable to that of the first dipole band. We also show that for RDDS1 uncoupled wakefield calculations for higher bands are consistent with measurements. In particular, a clear 26 GHz signal in the short range wake is found in both results.

3 pages, 7 figures, submitted to LINAC2000 as TUA18, 21-28 August, Monterey, CA