Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation

Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation

During 2008 and 2009 dedicated beam experiments with crab cavities were performed in the KEKB. The goal was to measure the impact of crab-cavity radio frequency (rf) noise on the beam quality. These experiments were performed as a validation of the crab-cavity beam dynamics models in view of the pos...

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Main Authors: K. Ohmi, R. Tomás, Y. Funakoshi, R. Calaga, T. Ieiri, Y. Morita, K. Nakanishi, K. Oide, Y. Ohnishi, Y. Sun, M. Tobiyama, F. Zimmermann
Format: Article
Language:English
Published: American Physical Society 2011-11-01
Series:Physical Review Special Topics. Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevSTAB.14.111003
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spelling doaj-f28b3624511f411da6013c403eb7071d2020-11-24T21:23:11ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022011-11-01141111100310.1103/PhysRevSTAB.14.111003Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulationK. OhmiR. TomásY. FunakoshiR. CalagaT. IeiriY. MoritaK. NakanishiK. OideY. OhnishiY. SunM. TobiyamaF. ZimmermannDuring 2008 and 2009 dedicated beam experiments with crab cavities were performed in the KEKB. The goal was to measure the impact of crab-cavity radio frequency (rf) noise on the beam quality. These experiments were performed as a validation of the crab-cavity beam dynamics models in view of the possible use of crab cavities in the upgrade of the CERN Large Hadron Collider (LHC). An unexpected strong beam-beam instability was observed during the course of the experiments as a kind of frequency response. Understanding this finding required extensive multiparticle and single particle simulations plus an extra experimental session to consolidate the observations.http://doi.org/10.1103/PhysRevSTAB.14.111003
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language English
format Article
sources DOAJ
author K. Ohmi
R. Tomás
Y. Funakoshi
R. Calaga
T. Ieiri
Y. Morita
K. Nakanishi
K. Oide
Y. Ohnishi
Y. Sun
M. Tobiyama
F. Zimmermann
spellingShingle K. Ohmi
R. Tomás
Y. Funakoshi
R. Calaga
T. Ieiri
Y. Morita
K. Nakanishi
K. Oide
Y. Ohnishi
Y. Sun
M. Tobiyama
F. Zimmermann
Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation
Physical Review Special Topics. Accelerators and Beams
author_facet K. Ohmi
R. Tomás
Y. Funakoshi
R. Calaga
T. Ieiri
Y. Morita
K. Nakanishi
K. Oide
Y. Ohnishi
Y. Sun
M. Tobiyama
F. Zimmermann
author_sort K. Ohmi
title Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation
title_short Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation
title_full Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation
title_fullStr Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation
title_full_unstemmed Response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation
title_sort response of colliding beam-beam system to harmonic excitation due to crab-cavity rf phase modulation
publisher American Physical Society
series Physical Review Special Topics. Accelerators and Beams
issn 1098-4402
publishDate 2011-11-01
description During 2008 and 2009 dedicated beam experiments with crab cavities were performed in the KEKB. The goal was to measure the impact of crab-cavity radio frequency (rf) noise on the beam quality. These experiments were performed as a validation of the crab-cavity beam dynamics models in view of the possible use of crab cavities in the upgrade of the CERN Large Hadron Collider (LHC). An unexpected strong beam-beam instability was observed during the course of the experiments as a kind of frequency response. Understanding this finding required extensive multiparticle and single particle simulations plus an extra experimental session to consolidate the observations.
url http://doi.org/10.1103/PhysRevSTAB.14.111003
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