Dispersion in the presence of strong transverse wakefields

Author

Assmann, Ralph W. ; Chao, Alex

Author_Institution

Linear Accel. Center, Stanford Univ., CA, USA

Volume

2

fYear

1997

fDate

12-16 May 1997

Firstpage

1523

Abstract

To minimize emittance growth in a long linac, it is necessary to control the wakefields by correcting the beam orbit excursions. In addition, the particle energy is made to vary along the length of the bunch to introduce a damping, known as the BNS damping, to the beam break-up effect. In this paper, we use a two-particle model to examine the relative magnitudes of the various orbit and dispersion functions involved. The results are applied to calculate the effect of a closed orbit bump and a misaligned structure. It is shown that wake-induced dispersion is an important contribution to the beam dynamics in long linacs with strong wakefields like SLC

Keywords

electron accelerators; particle beam bunching; particle beam dynamics; wakefield accelerators; BNS damping; SLC; beam break-up effect; beam dynamics; beam orbit excursion correction; bunch; closed orbit bump; dispersion functions; emittance growth minimization; long linac; misaligned structure; orbit functions; strong transverse wakefields; two-particle model; Acceleration; Chaos; Damping; Electrons; Equations; Frequency; Linear accelerators; Linear particle accelerator; Orbital calculations; Particle beams;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1997. Proceedings of the 1997

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-4376-X

Type

conf

DOI

10.1109/PAC.1997.750747

Filename

750747