Transformer ratio saturation in a beam-driven wakefield accelerator

We show that for beam-driven wakefield acceleration, the linearly ramped, equally spaced train of bunches typically considered to optimise the transformer ratio only works for flat-top bunches. Through theory and simulation, we explain that this behaviour is due to the unique properties of the plasm...

Descripción completa

Detalles Bibliográficos
Autores principales: Farmer, J P, Martorelli, R, Pukhov, A
Lenguaje:eng
Publicado: AIP 2015
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1063/1.4938038
http://cds.cern.ch/record/2710804
_version_ 1780965186189918208
author Farmer, J P
Martorelli, R
Pukhov, A
author_facet Farmer, J P
Martorelli, R
Pukhov, A
author_sort Farmer, J P
collection CERN
description We show that for beam-driven wakefield acceleration, the linearly ramped, equally spaced train of bunches typically considered to optimise the transformer ratio only works for flat-top bunches. Through theory and simulation, we explain that this behaviour is due to the unique properties of the plasma response to a flat-top density profile. Calculations of the optimal scaling for a train of Gaussian bunches show diminishing returns with increasing bunch number, tending towards saturation. For a periodic bunch train, a transformer ratio of 23 was achieved for 50 bunches, rising to 40 for a fully optimised beam.
id oai-inspirehep.net-1633713
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2015
publisher AIP
record_format invenio
spelling oai-inspirehep.net-16337132020-02-24T09:50:54Zdoi:10.1063/1.4938038http://cds.cern.ch/record/2710804engFarmer, J PMartorelli, RPukhov, ATransformer ratio saturation in a beam-driven wakefield acceleratorAccelerators and Storage RingsAccelerators and Storage RingsWe show that for beam-driven wakefield acceleration, the linearly ramped, equally spaced train of bunches typically considered to optimise the transformer ratio only works for flat-top bunches. Through theory and simulation, we explain that this behaviour is due to the unique properties of the plasma response to a flat-top density profile. Calculations of the optimal scaling for a train of Gaussian bunches show diminishing returns with increasing bunch number, tending towards saturation. For a periodic bunch train, a transformer ratio of 23 was achieved for 50 bunches, rising to 40 for a fully optimised beam.AIPoai:inspirehep.net:16337132015
spellingShingle Accelerators and Storage Rings
Accelerators and Storage Rings
Farmer, J P
Martorelli, R
Pukhov, A
Transformer ratio saturation in a beam-driven wakefield accelerator
title Transformer ratio saturation in a beam-driven wakefield accelerator
title_full Transformer ratio saturation in a beam-driven wakefield accelerator
title_fullStr Transformer ratio saturation in a beam-driven wakefield accelerator
title_full_unstemmed Transformer ratio saturation in a beam-driven wakefield accelerator
title_short Transformer ratio saturation in a beam-driven wakefield accelerator
title_sort transformer ratio saturation in a beam-driven wakefield accelerator
topic Accelerators and Storage Rings
Accelerators and Storage Rings
url https://dx.doi.org/10.1063/1.4938038
http://cds.cern.ch/record/2710804
work_keys_str_mv AT farmerjp transformerratiosaturationinabeamdrivenwakefieldaccelerator
AT martorellir transformerratiosaturationinabeamdrivenwakefieldaccelerator
AT pukhova transformerratiosaturationinabeamdrivenwakefieldaccelerator

Ejemplares similares