Roadmap for Structure-based Wakefield Accelerator (SWFA) R&amp;D and its challenges in beam dynamics

Jing, Chunguang; Ha, Gwanghui

doi:10.1088/1748-0221/17/05/t05007

Cited by 8 publications

(4 citation statements)

References 58 publications

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“…In this section, we focus on high energy lepton colliders with 𝐸 CM in the range of 1-20 TeV. Proposals in this range include CLIC [10], CCC [24], ILC [15], Muon Collider [25], ReLiC [16], and Wake Field Accelerators [26][27][28]. It was also proposed to use high power Free Electron Lasers to produce a second interaction region with high-energy and high luminosity gamma-gamma collisions at a high-energy electron-positron collider [29].…”

Section: Energy Frontier Colliders 221 High Energy Lepton Colliders (...mentioning

confidence: 99%

On the feasibility of future colliders: report of the Snowmass'21 Implementation Task Force

et al. 2023

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Colliders are essential research tools for particle physics. Numerous future collider proposal were discussed in the course of the US high energy physics community strategic planning exercise Snowmass'21. The Implementation Task Force (ITF) has been established to evaluate the proposed future accelerator projects for performance, technology readiness, schedule, cost, and environmental impact. Corresponding metrics has been developed for uniform comparison of the proposals ranging from Higgs/EW factories to multi-TeV lepton, hadron and ep collider facilities, based on traditional and advanced acceleration technologies. This article describes the metrics and approaches, and presents evaluations of future colliders performed by the ITF.

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Section: Energy Frontier Colliders 221 High Energy Lepton Colliders (...mentioning

confidence: 99%

On the feasibility of future colliders: report of the Snowmass'21 Implementation Task Force

et al. 2023

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“…In practice, the gradient of the magnetic field is limited by the magnet's technology, and the length of each quadrupole magnet must be relatively long to provide the desired magnetic field gradient. In [13] the length of each magnetic quadrupole was chosen to be 5 cm.…”

Section: Jinst 17 P05013mentioning

confidence: 99%

“…The very high accelerating gradients achievable with a CWA make the concept attractive for a number of accelerator applications. Structure wakefield acceleration is particularly well suited for multi-TeV-class linear collider [13] applications due to charge symmetry -the ability to accelerate positrons and electrons in the same structure without any mechanical design modification. Another notable application for the CWA technology is a soft X-ray free-electron laser (FEL) proposed in [14,15].…”

Section: Introductionmentioning

confidence: 99%

Limiting effects in drive bunch beam dynamics in beam-driven accelerators: instability and collective effects

Simakov¹,

Andonian²,

Baturin³

et al. 2022

J. Inst.

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In a collinear beam-driven wakefield accelerator, a bunch of charged particles is accelerated by a strong electric field that is generated in a medium by a preceding high-charge drive bunch. Multiple beam-driven acceleration concepts have been proposed and demonstrated in proof-of-principle experiments. In some concepts, the medium is plasma where very strong electric fields are created due to the motion of ions and electrons with respect to each other. In other configurations, the medium is a slow-wave electromagnetic structure made of dielectric and/or metal, and high gradients are achieved due to the very short duration of the electromagnetic pulse excited in the structure by the drive bunch. Because of the high charge, and consequently long length of the drive bunch, wakefields excited by the leading particles of the drive bunch affect the trailing particles in the same bunch and result in beam-driven instabilities obstructing the drive bunch's stable propagation and extended interactions with the witness bunch, ultimately terminating the energy transfer process. This paper presents an overview of the drive-bunch beam dynamics in beam-driven structure- and plasma-based accelerators with a focus on beam instabilities that limit stable propagation of the drive bunch, such as the beam break-up instability and transverse defocusing and deflection in cases of cylindrical and planar structures and plasma waveguides. Possible mitigation techniques are discussed.

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“…The dielectric wakefield accelerator (DWA) is a promising approach for building the TeV-energy range electron-positron colliders [1][2][3][4] and compact devices in various fields of science and technology, in particularly, in the free electron lasers (FEL) application for obtaining soft X-ray [5][6][7]. Yet, despite the possibilities of attaining high acceleration rates, demonstrated by theory [8][9][10][11] and experiments [5,[12][13][14][15][16][17], one problem inherent to linear accelerators [18] is not solved completely.…”

Section: Introductionmentioning

confidence: 99%

Acceleration and focusing of positron bunch in a dielectric wakefield accelerator with plasma in transport channel

2022

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The paper presents the results of numerical particle-in-cell simulation of the positron bunch focusing during acceleration in a plasma dielectric wakefield accelerator. The wakefield is excited by drive electron bunch in quartz dielectric tube, embedded in a cylindrical metal waveguide. The internal area of the dielectric tube is filled with plasma having in the general case the paraxial vacuum channel. Two different models of the plasma density radius-relationship are investigated: the homogeneous model and the inhomogeneous dependence characterized the capillary discharge. Results of the numerical particle-in-cell simulation show that a simultaneous acceleration and focusing of the test positron bunch in the wakefield is possible. The dependence of transport and acceleration of the positron bunch with change in the size of vacuum channel, waveguide length and the plasma density-radius model is studied.

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Roadmap for Structure-based Wakefield Accelerator (SWFA) R&D and its challenges in beam dynamics

Cited by 8 publications

References 58 publications

On the feasibility of future colliders: report of the Snowmass'21 Implementation Task Force

On the feasibility of future colliders: report of the Snowmass'21 Implementation Task Force

Limiting effects in drive bunch beam dynamics in beam-driven accelerators: instability and collective effects

Acceleration and focusing of positron bunch in a dielectric wakefield accelerator with plasma in transport channel

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