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Title: Analysis of wakefields in the ILC crab cavity

Abstract

The large crossing angle schemes of the ILC need a correction of bunch orientation at the interaction point (IP) in order to recover a luminosity loss of up to 80%. The orientation of bunches can be changed using a set of transverse deflecting cavities. The location of these crab cavities would be close to the final focus, and small deflections caused by wake fields in the cavities could cause misalignments of the bunches at the IP. Wake fields in the 3.9GHz deflecting cavities under development at FNAL have been analysed and their effects studied in view of use as the ILC crab cavity. Numerical simulations have been performed to determine the long-range wake potentials of up to quadrupole order modes in this cavity and their effect upon bunches passing through this cavity. Trapped modes within the CKM cavity have been investigated. Short-range wakes have also been a topic of study. The effect of the final focus quadrupole magnets on the deflection given to the bunch have also been calculated and used to calculate luminosity loss due to wake fields.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
903135
Report Number(s):
FERMILAB-CONF-06-542
TRN: US0703209
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: Prepared for European Particle Accelerator Conference (EPAC 06), Edinburgh, Scotland, 26-30 Jun 2006
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; CAVITIES; CRABS; LUMINOSITY; MAGNETS; ORIENTATION; QUADRUPOLES; Accelerators

Citation Formats

Burt, G, Dexter, A, /Lancaster U., Bellantoni, L, /Fermilab, Beard, C, Goudket, P, /Cockcroft Inst. Accel. Sci. Tech., Jones, R, and /Manchester U.. Analysis of wakefields in the ILC crab cavity. United States: N. p., 2006. Web.
Burt, G, Dexter, A, /Lancaster U., Bellantoni, L, /Fermilab, Beard, C, Goudket, P, /Cockcroft Inst. Accel. Sci. Tech., Jones, R, & /Manchester U.. Analysis of wakefields in the ILC crab cavity. United States.
Burt, G, Dexter, A, /Lancaster U., Bellantoni, L, /Fermilab, Beard, C, Goudket, P, /Cockcroft Inst. Accel. Sci. Tech., Jones, R, and /Manchester U.. 2006. "Analysis of wakefields in the ILC crab cavity". United States.
@article{osti_903135,
title = {Analysis of wakefields in the ILC crab cavity},
author = {Burt, G and Dexter, A and /Lancaster U. and Bellantoni, L and /Fermilab and Beard, C and Goudket, P and /Cockcroft Inst. Accel. Sci. Tech. and Jones, R and /Manchester U.},
abstractNote = {The large crossing angle schemes of the ILC need a correction of bunch orientation at the interaction point (IP) in order to recover a luminosity loss of up to 80%. The orientation of bunches can be changed using a set of transverse deflecting cavities. The location of these crab cavities would be close to the final focus, and small deflections caused by wake fields in the cavities could cause misalignments of the bunches at the IP. Wake fields in the 3.9GHz deflecting cavities under development at FNAL have been analysed and their effects studied in view of use as the ILC crab cavity. Numerical simulations have been performed to determine the long-range wake potentials of up to quadrupole order modes in this cavity and their effect upon bunches passing through this cavity. Trapped modes within the CKM cavity have been investigated. Short-range wakes have also been a topic of study. The effect of the final focus quadrupole magnets on the deflection given to the bunch have also been calculated and used to calculate luminosity loss due to wake fields.},
doi = {},
url = {https://www.osti.gov/biblio/903135}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {6}
}

Conference:
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