Measurement of Transverse Wakefields Induced by a Misaligned Positron Bunch in a Hollow Channel Plasma Accelerator

Abstract : Hollow channel plasma wakefield acceleration is a proposed method to provide high acceleration gradients for electrons and positrons alike: a key to future lepton colliders. However, beams which are misaligned from the channel axis induce strong transverse wakefields, deflecting beams and reducing the collider luminosity. This undesirable consequence sets a tight constraint on the alignment accuracy of the beam propagating through the channel. Direct measurements of beam misalignment-induced transverse wakefields are therefore essential for designing mitigation strategies. We present the first quantitative measurements of transverse wakefields in a hollow plasma channel, induced by an off-axis 20 GeV positron bunch, and measured with another 20 GeV lower charge trailing positron probe bunch. The measurements are largely consistent with theory.
Complete list of metadatas

Cited literature [16 references]  Display  Hide  Download

https://hal-polytechnique.archives-ouvertes.fr/hal-01742457
Contributor : Sébastien Corde <>
Submitted on : Sunday, March 25, 2018 - 1:19:02 AM
Last modification on : Wednesday, August 7, 2019 - 12:14:40 PM
Long-term archiving on : Thursday, September 13, 2018 - 10:09:32 AM

File

2018_Lindstrom_PRL.pdf
Publication funded by an institution

Identifiers

Citation

C. Lindstrøm, E. Adli, J Allen, W. An, C. Beekman, et al.. Measurement of Transverse Wakefields Induced by a Misaligned Positron Bunch in a Hollow Channel Plasma Accelerator. Physical Review Letters, American Physical Society, 2018, 120 (12), ⟨10.1103/PhysRevLett.120.124802⟩. ⟨hal-01742457⟩

Share

Metrics

Record views

315

Files downloads

127