'Wake field' diaporamas de présentation

Electron cloud effects in Cesr-TF and KEKB

Electron cloud effects in Cesr-TF and KEKB. K. Ohmi KEK 29 Feb 2008 LEPP, Cornell univ. Contents. History, electron cloud effect in KEK-PF Electron cloud build-up at KEKB Coupled bunch instability caused by electron cloud Single bunch instability caused by electron cloud

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Electron cloud effects in Cesr-TF and KEKB

Electron cloud effects in Cesr-TF and KEKB. K. Ohmi KEK 29 Feb 2008 LEPP, Cornell univ. Contents. History, electron cloud effect in KEK-PF Electron cloud build-up at KEKB Coupled bunch instability caused by electron cloud Single bunch instability caused by electron cloud

654 views • 58 slides

Electron cloud effects in Cesr-TF and KEKB

Electron cloud effects in Cesr-TF and KEKB. K. Ohmi KEK 29 Feb 2008 LEPP, Cornell univ. Contents. History, electron cloud effect in KEK-PF Electron cloud build-up at KEKB Coupled bunch instability caused by electron cloud Single bunch instability caused by electron cloud

587 views • 58 slides

Collective effects

Collective effects. Erik Adli , University of Oslo, August 2014, Erik.Adli@fys.uio.no , v2.01. Introduction. Particle accelerators are continuously being pushed to new parameter regimes with higher currents , higher power and higher intensity

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Unconventional impedances Summary of the features of the electron cloud wake fields

Intensity limitations from combined effects and/or (un)conventional impedances Giovanni Rumolo thanks to Oliver Boine-Frankenheim and Frank Zimmermann . CARE-HHH-APD Workshop (CERN,10.11.2004). Unconventional impedances Summary of the features of the electron cloud wake fields

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lecture 4

lecture 4. multiparticle effects i.e. the effect of the self field of the beam 1) ion linac : space charge 2) electron linac : wake field virtual tour of the CERN hadron LINACS. space charge. Coulomb force between particles in a bunch

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INVESITGATION OF AN ALTERNATE MEANS OF WAKEFIELD SUPPRESSION IN CLIC MAIN LINACS

INVESITGATION OF AN ALTERNATE MEANS OF WAKEFIELD SUPPRESSION IN CLIC MAIN LINACS. CLIC_DDS. Wakefield suppression in CLIC main linacs. The present main accelerating structure (WDS)for the CLIC relies on linear tapering of cell parameters and heavy damping with a Q of ~10.

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Alternate Means of Wakefield Suppression in CLIC Main Linac

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INVESITGATION OF AN ALTERNATE MEANS OF WAKEFIELD SUPPRESSION IN CLIC MAIN LINACS

INVESITGATION OF AN ALTERNATE MEANS OF WAKEFIELD SUPPRESSION IN CLIC MAIN LINACS. CLIC_DDS. Wakefield suppression in CLIC main linacs. The present main accelerating structure (WDS)for the CLIC relies on linear tapering of cell parameters and heavy damping with a Q of ~10.

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RHIC Polarimeter Calculations using CST

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Wakefield suppression in the CLIC main accelerating structures

Wakefield suppression in the CLIC main accelerating structures. Vasim Khan & Roger Jones. Wakefield suppression in CLIC main linacs. The present main accelerating structure (WDS)for the CLIC relies on linear tapering of cell parameters and heavy damping with a Q of ~10.

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title

title. INSTITUTE OF APPLIED PHYSICS RAS RUSSIA NIZHNY NOVGOROD. ULTRASHORT RELATIVISTICALLY STRONG SOLITONS IN PLASMA. Authors: Fadeev D. A. (fadey@appl.sci-nnov.ru) Mironov V. A. intro. introduction. Initial 3d laser pulse. rare plasma. nonlinear response factors:.

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Dielectric Wakefield Accelerator for an X-ray FEL User Facility

Dielectric Wakefield Accelerator for an X-ray FEL User Facility. C. Jing 1 , R. Lindberg 2 , J. Power 3 , A. Zholents 2 1 Euclid Techlabs 2 Advanced Photon Source, ANL 3 High Energy Physics, ANL. Assessment of opportunities. Future Light Source Workshop, Jlab , March 5-9, 2012.

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Alternate Means of Wakefield Suppression in CLIC Main Linac

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multi-bunch wake field in ECLOUD

multi-bunch wake field in ECLOUD. in ECLOUD input file :. wakefield switch 2 0.01 0.0 10. ? activate (new) wake field option. ? x offset [m], y offset [m], offset bunch #. ECLOUD output file wake.data:. time, iflag, Ex(0,0), Ex(1,0), Ex(2,0), Ey(0,0), Ey(0,1), Ey(0,2), xstep, ystep.

215 views • 11 slides

E-cloud study in SNS

E-cloud study in SNS. By Pivi. By Ohmi. A H. 2nC/m. A L. Electron Line density. Ohmi. The stability criterion is given by the dispersion relation as follows. If U >0, unstable. For SNS, U L =0.1, U H =4.0. Wake field of the e-cloud.

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