Beam emittance growth caused by transverse deflecting fields in a linear accelerator

Chao, Alexander W.; Richter, B.; Yao, Chia-Yu

doi:10.1016/0029-554x(80)90851-4

Cited by 98 publications

(60 citation statements)

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“…In the following we will consider special cases of the general equation of motion [34,35] given by 1 …”

Section: Transverse Emittance Preservationmentioning

confidence: 99%

“…Here ρ(z) is the longitudinal distribution function of the beam which, in the approximation of zero transverse dimension as in reference [34], is equal to the line density of particles in the bunch. This approximation is valid provided that the beam sizes are much less than that of the vacuum chamber so that the transverse wakefield may be taken to be uniform across the bunch's transverse dimensions.…”

Section: Ds E(s) Dx(z S)mentioning

confidence: 99%

“…In general, the deviation of the particle trajectory is given by 1) the original notation of refs. [34] and [35] has been modified slightly noting…”

Section: Ds E(s) Dx(z S)mentioning

confidence: 99%

“…Through the early 1990's emittance dilutions were controlled by imposing tight tolerances on injection errors as precursor to BNS damping [11,34], steering using both one-to-one correction and localized beam-based alignment [7,54], and by invoking BNS damping. As the beam currents were increased, a more localized emittance preservation technique was developed in which empirically determined trajectory oscillations ('bumps') were used to cancel emittance dilutions from transverse wakefields and dispersive errors.…”

Section: 'Wakefield Bumps'mentioning

confidence: 99%

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Emittance preservation in linear accelerators

Minty¹

2001

AIP Conference Proceedings

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Abstract.In linear colliders preservation of the phase space density of charged particles during acceleration to high energies is essential. In practice, the electromagnetic fields which govern the beam transport may not be sufficiently well understood. This may arise, for example, from magnet and structure alignment and/or manufacturing errors, timevarying electromagnetic fields due to component vibration or imperfect regulation, or at high beam currents, from beam-induced fields. These inadequacies may be overcome using measurements of the beam response. In this report we review such methods for preserving single-bunch beam emittances with experimental results from the Stanford Linear Collider.

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“…In the following we will consider special cases of the general equation of motion [34,35] given by 1 …”

Section: Transverse Emittance Preservationmentioning

confidence: 99%

Section: Ds E(s) Dx(z S)mentioning

confidence: 99%

“…In general, the deviation of the particle trajectory is given by 1) the original notation of refs. [34] and [35] has been modified slightly noting…”

Section: Ds E(s) Dx(z S)mentioning

confidence: 99%