skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Wakefield Band Partitioning in LINAC Structures

Abstract

In the NLC project multiple bunches of electrons and positrons will be accelerated initially to a centre of mass of 500 GeV and later to 1 TeV or more. In the process of accelerating 192 bunches within a pulse train, wakefields are excited which kick the trailing bunches off axis and can cause luminosity dilution and BBU (Beam Break Up). Several structures to damp the wakefield have been designed and tested at SLAC and KEK and these have been found to successfully damp the wakefield [1]. However, these 2{pi}/3 structures suffered from electrical breakdown and this has prompted us to explore lower group velocity structures operating at higher fundamental mode phase advances. The wakefield partitioning amongst the bands has been found to change markedly with increased phase advance. Here we report on general trends in the kick factor and associated wakefield band partitioning in dipole bands as a function of phase advance of the synchronous mode in linacs. These results are applicable to both TW (travelling wave) and SW (standing wave) structures.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
812945
Report Number(s):
SLAC-PUB-9467
TRN: US0303526
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 25 Mar 2003
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; DILUTION; DIPOLES; ELECTRICAL FAULTS; ELECTRONS; LINEAR ACCELERATORS; LUMINOSITY; POSITRONS; STANFORD LINEAR ACCELERATOR CENTER; VELOCITY

Citation Formats

Jones, Roger M. Wakefield Band Partitioning in LINAC Structures. United States: N. p., 2003. Web. doi:10.2172/812945.
Jones, Roger M. Wakefield Band Partitioning in LINAC Structures. United States. doi:10.2172/812945.
Jones, Roger M. Tue . "Wakefield Band Partitioning in LINAC Structures". United States. doi:10.2172/812945. https://www.osti.gov/servlets/purl/812945.
@article{osti_812945,
title = {Wakefield Band Partitioning in LINAC Structures},
author = {Jones, Roger M},
abstractNote = {In the NLC project multiple bunches of electrons and positrons will be accelerated initially to a centre of mass of 500 GeV and later to 1 TeV or more. In the process of accelerating 192 bunches within a pulse train, wakefields are excited which kick the trailing bunches off axis and can cause luminosity dilution and BBU (Beam Break Up). Several structures to damp the wakefield have been designed and tested at SLAC and KEK and these have been found to successfully damp the wakefield [1]. However, these 2{pi}/3 structures suffered from electrical breakdown and this has prompted us to explore lower group velocity structures operating at higher fundamental mode phase advances. The wakefield partitioning amongst the bands has been found to change markedly with increased phase advance. Here we report on general trends in the kick factor and associated wakefield band partitioning in dipole bands as a function of phase advance of the synchronous mode in linacs. These results are applicable to both TW (travelling wave) and SW (standing wave) structures.},
doi = {10.2172/812945},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {3}
}

Technical Report:

Save / Share: