Transverse wakefield calculations

Aharonian, G.; Meller, R.; Siemann, R.H.

doi:10.1016/0167-5087(83)90673-7

Cited by 8 publications

(3 citation statements)

References 2 publications

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“…A modified version of this method was introduced in [15] and implemented in the code ECHO. An alternative approach based on waveguide mode expansion was introduced in [3] and realized in the code DBCI. In the following, we first review the simplest and most general method of Napoly et al and then describe its modified version used later for the 3D case.…”

Section: Indirect Methods For Axisymmetric Structuresmentioning

confidence: 99%

“…However, for short bunches, a long-time propagation of the electromagnetic field in the outgoing vacuum chamber is required to take into account the scattered fields which will reach the bunch at later times. To drastically reduce the computational time and avoid numerical error accumulation, several indirect integration algorithms were developed for rotationally symmetric geometries [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Indirect methods for wake potential integration

Zagorodnov

2006

Phys. Rev. ST Accel. Beams

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The development of the modern accelerator and free-electron laser projects requires to consider wake fields of very short bunches in arbitrary three dimensional structures. To obtain the wake numerically by direct integration is difficult, since it takes a long time for the scattered fields to catch up to the bunch. On the other hand no general algorithm for indirect wake field integration is available in the literature so far. In this paper we review the known indirect methods to compute wake potentials in rotationally symmetric and cavity-like three dimensional structures. For arbitrary three dimensional geometries we introduce several new techniques and test them numerically.Comment: 19 pages, 6 figures, submitted to PR STA

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Section: Indirect Methods For Axisymmetric Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Indirect methods for wake potential integration

Zagorodnov

2006

Phys. Rev. ST Accel. Beams

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“…In particle accelerators, when a bunch travels at a speed close to that of the light, spacial discontinuity and material imperfections produce wake fields [1].…”

Section: Introductionmentioning

confidence: 99%

Reducing parasitic resonances in particle accelerators components by broadband Higher–Order–Mode couplers

et al. 2019

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In particle accelerator components, parasitic resonances must be reduced because they heat up the equipment and cause beam instabilities. In this paper, a method for designing and characterizing Higher Order Mode (HOM) couplers for reducing such resonances in a broad bandwidth is proposed. A case study is considered for a specific component, called QuattroTank, showing geometrical discontinuities and thus causing significant electro-magnetic resonances. Results of numerical simulation and experimental emulation prove the capability of the proposed method to reduce the peaks and the Q-factor of the resonances.

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Comment on wake field computation in time domain

Weiland¹

1983

Nuclear Instruments and Methods in Physics Research

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A bunch of charged particles passing an accelerating cavity -or any other structure of varying shape-excites electromagnetic fields that act back on the particles. These wake fields are functions of space and time coordinates. The net change in momentum due to such fields is obtained by an integration over all times during that the fields interact with the particles, i.e. normally from t = *-oo to t -+ oo > For ultrarelativistic particles passing structures of cylindrical symmetry this infinte range for the inte gration -which is very inconvinient for all practical computations-can be replaced by a finite range over the section where the scattered fields originate from.

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Transverse wakefield calculations

Cited by 8 publications

References 2 publications

Indirect methods for wake potential integration

Indirect methods for wake potential integration

Reducing parasitic resonances in particle accelerators components by broadband Higher–Order–Mode couplers

Comment on wake field computation in time domain

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