Beam blowup due to synchro-beta resonance with/without beam-beam effects

A significant blowup of the vertical emittance is observed in particle tracking in lattices with random skew quadrupoles, even without beam-beam effects with the FCC-ee lattice at ttbar. A Vlasov model well explains the blowup, and agrees with the tracking. This effect will set an additional limit o...

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Detalles Bibliográficos
Autores principales: Oide, Katsunobu, El Khechen, Dima
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: JACOW 2019
Materias:
physics.acc-ph
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.18429/JACoW-eeFACT2018-WEXBA03
http://cds.cern.ch/record/2713385
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author Oide, Katsunobu
El Khechen, Dima
author_facet Oide, Katsunobu
El Khechen, Dima
author_sort Oide, Katsunobu
collection CERN
description A significant blowup of the vertical emittance is observed in particle tracking in lattices with random skew quadrupoles, even without beam-beam effects with the FCC-ee lattice at ttbar. A Vlasov model well explains the blowup, and agrees with the tracking. This effect will set an additional limit on the goal of tuning of the vertical emittance of the lattice of colliders, well below the value at the collision.
format info:eu-repo/semantics/article
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
publisher JACOW
record_format invenio
spelling cern-27133852021-02-27T04:25:05Z doi:10.18429/JACoW-eeFACT2018-WEXBA03 http://cds.cern.ch/record/2713385 eng Oide, Katsunobu El Khechen, Dima Beam blowup due to synchro-beta resonance with/without beam-beam effects physics.acc-ph Accelerators and Storage Rings A significant blowup of the vertical emittance is observed in particle tracking in lattices with random skew quadrupoles, even without beam-beam effects with the FCC-ee lattice at ttbar. A Vlasov model well explains the blowup, and agrees with the tracking. This effect will set an additional limit on the goal of tuning of the vertical emittance of the lattice of colliders, well below the value at the collision. A blowup of vertical emittance has been observed in particle tracking simulations with beam-beam and lattice misalignments. It was somewhat unexpected, since estimation without lattice errors did not predict such a blowup unless a residual vertical dispersion at the interaction point (IP) is larger than a certain amount. Later such a blowup has been seen in a tracking of lattices without beam-beam effect. A possible explanation of the blowup is given by a Vlasov model for an equilibrium of quadratic transverse moments in the synchrotron phase space. This model predicts such a blowup as a synchro-beta resonance mainly near the first synchrotron sideband of the main x-y coupling resonance line. JACOW info:eu-repo/grantAgreement/EC/FP7/312453 info:eu-repo/semantics/ Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/2713385 , (2019) pp. WEXBA03 2019-04-23
spellingShingle physics.acc-ph
Accelerators and Storage Rings
Oide, Katsunobu
El Khechen, Dima
Beam blowup due to synchro-beta resonance with/without beam-beam effects
title Beam blowup due to synchro-beta resonance with/without beam-beam effects
title_full Beam blowup due to synchro-beta resonance with/without beam-beam effects
title_fullStr Beam blowup due to synchro-beta resonance with/without beam-beam effects
title_full_unstemmed Beam blowup due to synchro-beta resonance with/without beam-beam effects
title_short Beam blowup due to synchro-beta resonance with/without beam-beam effects
title_sort beam blowup due to synchro-beta resonance with/without beam-beam effects
topic physics.acc-ph
Accelerators and Storage Rings
url https://dx.doi.org/10.18429/JACoW-eeFACT2018-WEXBA03
http://cds.cern.ch/record/2713385
http://cds.cern.ch/record/2713385
work_keys_str_mv AT oidekatsunobu beamblowupduetosynchrobetaresonancewithwithoutbeambeameffects
AT elkhechendima beamblowupduetosynchrobetaresonancewithwithoutbeambeameffects

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