Analysis and design of parallel-coupled high-gradient structure for ultrashort input power pulses

Jiang, Yuliang; Shi, Jiaru; Zha, Hao; Liu, Jiayang; Lin, Xiancai; Chen, Huaibi

doi:10.1103/physrevaccelbeams.24.112002

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…Pulse compression in S-band [12] and X-band [13] to get short pulse of several tens of ns has beeen demonstrated at Tsinghua University recently. Moreover, an X-band parallel-coupled accelerating structure, which makes better use of the short pulse than TWS, has been designed to have comparable accelerating capability of the X-band TWS [14]. C-band is a well balance between the two, considering the manufacturing difficulty and structure wake.…”

Section: Parallel-coupled Accelerating Structurementioning

confidence: 99%

A C-band Test Platform for the Development of RF Photo Cathode and High Gradient Accelerating Structures

Liu,

Li,

Jiang

et al. 2024

J. Phys.: Conf. Ser.

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In order to promote the studies of low emittance RF photo cathode and high gradient accelerating structures, a C-band test platform has been initialized since late 2021. In this paper, an overview of the present status and future plans of this platform is given. A 3.6-cell C-band RF photo cathode has been manufactured and now is under test. In addition, studies such as the design for a C-band RF traveling-wave accelerating structure and the design of a C-band high gradient parallel-coupled accelerating structure utilizing short pulse are introduced.

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Section: Parallel-coupled Accelerating Structurementioning

confidence: 99%

A C-band Test Platform for the Development of RF Photo Cathode and High Gradient Accelerating Structures

Liu,

Li,

Jiang

et al. 2024

J. Phys.: Conf. Ser.

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“…The next step is to confirm the BIA regime acceleration for long accelerating structures. A design for fast-filling traveling-wave accelerating structures was suggested in reference [25].…”

Section: Past Achievements Current Research and Near-term Focus In Th...mentioning

confidence: 99%

“…New broadband coupling and high-shunt-impedance structures are needed to demonstrate high-efficiency, high-gradient short-pulse accelerators. New trends of metallic and dielectric accelerators at cryogenic temperatures, special coating, and parallel feeding have been explored in recent years [25,[69][70][71], as well as new fabrication techniques to lower fabrication costs. In order to push forward the SWFA roadmap, despite the significant progress that has been made in the past, many challenging issues, particularly the beam dynamics related issues, should be resolved in the coming decade.…”

Section: Final Remarksmentioning

confidence: 99%

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

Jing¹,

Ha²

2022

J. Inst.

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The combination of advantages in positron acceleration over plasma-based accelerators and high gradient over conventional accelerators puts the structure-based wakefield accelerator (SWFA) in a unique spot on the road to a multi-TeV linear collider. As a result of the significant advancements that have been made throughout the past several decades, the SWFA related research continues gaining special attention from the accelerator community. In this article, we will present a survey of the research on SWFAs, with a particular focus on the challenges in beam dynamics, and lay out a roadmap toward its ultimate goal of delivering a mature linear collider design.

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“…Distributed coupling topologies also allow for a SW structure to increase the number of cells by treating each cell as independent. In this configuration, each accelerating cell is connected directly to the power source by a waveguide which runs parallel to the structure [4,5]. Because the structure does not rely on coupling between cells, the cells' iris aperture can be made small to increase the shunt impedance.…”

Section: Introductionmentioning

confidence: 99%

Wakefield damping in a distributed coupling LINAC

Ericson¹,

Bertwistle²,

Boland³

2023

Preprint

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The number of cells in a π-mode standing wave (SW) accelerating structure for the Compact linear Collider (CLIC) project is limited by mode overlap with nearby modes. The distributed coupling scheme avoids mode overlap by treating each cell as independent. Designs of cells suitable for distributed coupling with strong wakefield damping have not previously been studied. In this paper we develop a SW cell to be used in a distributed coupling structure that can satisfy the CLIC transverse wakepotential limit. From the middle cell of the CLIC-G* travelling wave (TW) structure, a SW cell is designed. The cell is adapted to be suitable for distributed coupling. Its wakepotentials in an ideal case of open boundaries are reduced to satisfy the wakepotential threshold. An electric boundary is added to the model to simulate total reflection at the distribution network. A horizontal coupler cell that connects to the distribution network such that the reflected wakefields remain similar to the open boundary case is simulated. A triplet module which takes advantage of cell-to-cell coupling to reduce reflected wakepotential is presented.

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Analysis and design of parallel-coupled high-gradient structure for ultrashort input power pulses

Cited by 4 publications

References 23 publications

A C-band Test Platform for the Development of RF Photo Cathode and High Gradient Accelerating Structures

A C-band Test Platform for the Development of RF Photo Cathode and High Gradient Accelerating Structures

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

Wakefield damping in a distributed coupling LINAC

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