Title :
Application of the GSM method and TD computation of the long range wake in linear accelerator structures
Author :
Jostingmeier, A. ; Dohlus, M. ; Rieckmann, C. ; Omar, A.S.
Author_Institution :
DESY, Hamburg, Germany
Abstract :
For a proper design of linear colliders it is important to know the transverse long range wake which can either be computed directly in TD or alternatively from the corresponding higher order resonant modes. In this contribution, the resonant modes of the first, third and sixth dipole passband of the 180-cell accelerating structure used for the S-band linear collider at DESY have been analyzed using an accurate and numerically efficient generalized scattering matrix (GSM) method. Furthermore, the MAFIA program package has been applied to calculate the wake function in time domain (TD). The agreement of both methods turns out to be excellent. From the results one can predict that the sixth dipole passband significantly contributes to the transverse wakefield
Keywords :
S-matrix theory; accelerator cavities; high energy physics instrumentation computing; linear colliders; numerical analysis; time-domain analysis; wakefield accelerators; 180-cell accelerating structure; DESY; GSM method; MAFIA program package; S matrix; S-band linear collider; accelerator cavity; dipole passband; higher order resonant modes; linear accelerator structures; numerically efficient generalized scattering matrix; time domain; transverse long range wake; Acceleration; Colliding beam devices; GSM; Linear accelerators; Packaging; Particle beams; Passband; Resonance; Scattering; Transmission line matrix methods;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.751271