Terahertz driven dielectric linacs

太赫兹驱动介电直线加速器

基本信息

  • 批准号:
    ST/N003063/1
  • 负责人:
  • 金额:
    $ 3.43万
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Research Grant
  • 财政年份:
    2016
  • 资助国家:
    英国
  • 起止时间:
    2016 至 无数据
  • 项目状态:
    已结题

项目摘要

In particle physics, future linear colliders such as CLIC or ILC require ultra-short, sub-picosecond, bunches to obtain the luminosity necessary for the particle physics science exploration. In accelerator based X-Ray sources, sub 10fs bunches are highly sought after, opening new windows on material science. Going beyond these massive accelerators will require higher gradient structures to shrink the size and cost of future high energy colliders. Current metallic microwave structures are limited by electric breakdown to around 100 MV/m.In the drive to obtain every shorter particle bunches, the synchronization of the bunches, both to each other and to facility infrastructure (RF, drive lasers, facility clocks, diagnostic systems) is crucial for the facility optimization, and yet continues to present unsolved problems. Both generation and synchronization of such ultra-short particle beams presents a subsequent problem for the measurement of the ultra-short bunches; only two technologies exist that approach the requirements of future linear colliders and accelerator light sources; laser based 'electro-optic' detection and transverse deflecting cavities. However, EO detection is not currently able to address the few-fs regime, while the gradient requirements make RF (Transverse deflecting cavity) TDC's infeasible for sub-ps measurements on high energy particle physics machines. A high gradient, high frequency (>300 GHz) TDC would allow the same technique to be applied to ultra-short, high energy colliders.Here we propose to develop a blue-skies approach to these problems, using laser generated THz radiation to be coupled to dielectric lined waveguide for acceleration and manipulation of those beams. In extending the GHz-RF techniques into the picosecond/THz regime we gain in time resolution for manipulation and detection; we gain orders of magnitude in the temporal gradient necessary for manipulation on the sub-picosecond time scale; we gain orders of magnitude in energy efficiency, through only generating the accelerating and deflecting fields over a time window matched to the beams to be accelerated (rather than matched to microsecond cavity filling times). Similar high profile research at Stanford has demonstrated gradients in excess of 250 MV/m using laser pulses at much shorter wavelengths. The short timescales involved and the lack of metallic-vacuum transitions prevents the breakdown in the structure up to the dielectric strength of the lining or grating. However in contrast to a wide body of research into optical acceleration methods, the THz approach allows complete trapping of 'conventional' picosecond bunches rather than the high frequency optical smearing associated with the <3fs periods of laser-acceleration concepts. By using THz the electron bunch can occupy a small range of phases producing a far higher quality bunch consistent with requirements from accelerator applications such as colliders and FELs. One of the first steps towards this goal is the demonstration of laser-based schemes for the acceleration and deflection of relativistic electron beams. We propose to take preliminary simulations and experiments to the next stage of proof-of-concept demonstration on STFC's test accelerator, VELA. Our approach is a melding of concepts in electro-optic detection and THz generation (areas of expertise for Jamison and Graham) and particle physics cavity design (expertise of Burt). By using an integrated team the structure and source can be developed in tandem to provide a technology ideally suited to accelerator development. While other experiments have taken place with sub-relativistic particles this would be the first acceleration of fully relativistic particles by a THz structure and would be the first transverse deflecting cavity operating in the THz regime.
在粒子物理中,未来的直线对撞机,如CLIC或ILC,需要超短的、亚皮秒级的束来获得粒子物理科学探索所需的光度。在基于加速器的x射线源中,低于10fs的束受到高度追捧,为材料科学打开了新的窗口。要超越这些大型加速器,需要更高的梯度结构来缩小未来高能对撞机的尺寸和成本。目前的金属微波结构受电击穿限制在100毫伏/米左右。在获得每一个较短粒子束的驱动过程中,粒子束之间以及粒子束与设备基础设施(RF、驱动激光器、设备时钟、诊断系统)之间的同步对于设备优化至关重要,但仍然存在未解决的问题。这种超短粒子束的产生和同步给超短束的测量带来了后续问题;目前只有两种技术可以满足未来线性对撞机和加速器光源的要求;基于激光的“电光”探测和横向偏转腔。然而,EO检测目前还不能解决几个fs的问题,而梯度要求使得RF(横向偏转腔)TDC无法在高能粒子物理机上进行次ps的测量。一个高梯度、高频率(bbb300 GHz)的TDC将允许同样的技术应用于超短、高能对撞机。在这里,我们建议开发一种蓝天方法来解决这些问题,利用激光产生的太赫兹辐射耦合到介质衬里波导上,以加速和操纵这些光束。在将GHz-RF技术扩展到皮秒/太赫兹波段时,我们获得了操作和检测的时间分辨率;我们获得了在亚皮秒时间尺度上操作所需的时间梯度的数量级;我们在能源效率上获得了数量级的提高,通过在一个与要加速的光束相匹配的时间窗口内产生加速和偏转场(而不是与微秒级的腔填充时间相匹配)。斯坦福大学(Stanford)的类似研究已经证明,使用波长短得多的激光脉冲,可以产生超过250 MV/m的梯度。所涉及的短时间尺度和缺乏金属真空跃迁防止了结构的击穿,直到衬里或光栅的介电强度。然而,与光学加速方法的广泛研究相比,太赫兹方法允许完全捕获“传统”皮秒束,而不是与激光加速概念的<3fs周期相关的高频光学涂布。通过使用太赫兹,电子束可以占据很小的相位范围,产生高得多的质量束,符合加速器应用(如对撞机和FELs)的要求。实现这一目标的第一步是演示基于激光的相对论电子束加速和偏转方案。我们建议在STFC的测试加速器VELA上进行初步模拟和实验,以进行下一阶段的概念验证演示。我们的方法融合了电光探测和太赫兹产生(Jamison和Graham的专业领域)和粒子物理腔设计(Burt的专业领域)的概念。通过使用一个集成的团队,结构和资源可以串联开发,以提供理想的适合加速器开发的技术。虽然其他实验已经在亚相对论性粒子上进行,但这将是第一次通过太赫兹结构加速完全相对论性粒子,并将是第一个在太赫兹区域内运行的横向偏转腔。

项目成果

期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Characterizing a terahertz-driven dielectric-lined waveguide for electron beam manipulation
Electron-terahertz interaction in dielectric-lined waveguide structures for electron manipulation
用于电子操纵的电介质衬里波导结构中的电子-太赫兹相互作用
Dispersion in dielectric-lined waveguides designed for terahertz-driven deflection of electron beams
  • DOI:
    10.1063/5.0041391
  • 发表时间:
    2021-04
  • 期刊:
  • 影响因子:
    4
  • 作者:
    V. Georgiadis;A. Healy;M. Hibberd;G. Burt;S. Jamison;D. Graham
  • 通讯作者:
    V. Georgiadis;A. Healy;M. Hibberd;G. Burt;S. Jamison;D. Graham
Group Velocity Matching in Dielectric-Lined Waveguides and its Role in Electron-THz Interaction
介质衬里波导中的群速度匹配及其在电子-太赫兹相互作用中的作用
  • DOI:
    10.18429/jacow-ipac2017-wepva019
  • 发表时间:
    2017
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Healy Alisa
  • 通讯作者:
    Healy Alisa
Terahertz-driven acceleration of a relativistic 35 MeV electron beam
  • DOI:
    10.1109/irmmw-thz.2019.8873990
  • 发表时间:
    2019-10
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M. Hibberd;A. Healy;D. Lake;V. Georgiadis;E. J. H. Smith;O. Finlay;T. Pacey;J. Jones;Y. Saveliev;D. Walsh;E. Snedden;R. Appleby;G. Burt;D. Graham;S. Jamison
  • 通讯作者:
    M. Hibberd;A. Healy;D. Lake;V. Georgiadis;E. J. H. Smith;O. Finlay;T. Pacey;J. Jones;Y. Saveliev;D. Walsh;E. Snedden;R. Appleby;G. Burt;D. Graham;S. Jamison
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Graeme Burt其他文献

Evaluating the reliability & availability of more-electric aircraft power systems
评估可靠性
Terahertz-driven acceleration of subrelativistic electron beams using tapered rectangular dielectric-lined waveguides
使用锥形矩形介质衬里波导太赫兹驱动的亚相对论电子束加速
  • DOI:
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    1.7
  • 作者:
    L. Nix;Joseph T. Bradbury;C. T. Shaw;M. Hibberd;D. M. Graham;Robert Appleby;Graeme Burt;Rosa Letizia;Steven P. Jamison
  • 通讯作者:
    Steven P. Jamison
Superconducting DC busbar with low resistive joints for all-electric aircraft propulsion system
  • DOI:
    10.1016/j.physc.2024.1354617
  • 发表时间:
    2024-12-15
  • 期刊:
  • 影响因子:
  • 作者:
    Gaurav Gautam;Min Zhang;Weijia Yuan;Graeme Burt;Daniel Malkin
  • 通讯作者:
    Daniel Malkin
Calculation of RF pulse evolution due to dispersion in travelling wave linacs using Fourier methods
使用傅立叶方法计算行波直线加速器中色散引起的射频脉冲演化
Grid tie converters aided rapid grid voltage fluctuation compensation with power hardware-in-the-Loop experimental validation
  • DOI:
    10.1007/s00502-025-01307-3
  • 发表时间:
    2025-02-10
  • 期刊:
  • 影响因子:
    0.400
  • 作者:
    Tomasz Lerch;Szymon Barczentewicz;Mohammad Abu Sarhan;Zhiwang Feng;Graeme Burt
  • 通讯作者:
    Graeme Burt

Graeme Burt的其他文献

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{{ truncateString('Graeme Burt', 18)}}的其他基金

Manufacturing in the UK for High Gradient Cavities (MUHiG)
英国制造高梯度腔 (MUHiG)
  • 批准号:
    ST/W005247/1
  • 财政年份:
    2022
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
HL-LHC-UK Phase 2
HL-LHC-UK 第 2 阶段
  • 批准号:
    ST/T001895/1
  • 财政年份:
    2020
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
High Reliability, Modular Radiotherapy Treatment Linac for cancer care in Developing Countries
高可靠性、模块化放射治疗直线加速器用于发展中国家的癌症护理
  • 批准号:
    ST/T002484/1
  • 财政年份:
    2019
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
A modular, integrated electron gun and RF cavity for radiotherapy treatment systems in developing countries
用于发展中国家放射治疗系统的模块化集成电子枪和射频腔
  • 批准号:
    ST/S002081/1
  • 财政年份:
    2018
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
RTT Accelerator Technology Options Study
RTT 加速器技术方案研究
  • 批准号:
    ST/S001190/1
  • 财政年份:
    2018
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
High Luminosity LHC : UK (HL-LHC-UK)
高亮度大型强子对撞机:英国 (HL-LHC-UK)
  • 批准号:
    ST/N001575/1
  • 财政年份:
    2016
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
Probe: Proton beam Extension for Imaging and Therapy
探头:用于成像和治疗的质子束扩展
  • 批准号:
    ST/N003659/1
  • 财政年份:
    2016
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
Microwave filters with improved power handling capabilities for satellite applications
微波滤波器具有改进的卫星应用功率处理能力
  • 批准号:
    ST/N00230X/1
  • 财政年份:
    2016
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
Harmonic and higher order mode mm-wave klystrons
谐波和高阶模毫米波速调管
  • 批准号:
    ST/K002953/1
  • 财政年份:
    2013
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant
Compact Linac with Dynamic Controls for Image Driven Optimisation of X-ray screening
具有动态控制的紧凑型直线加速器,用于 X 射线筛查的图像驱动优化
  • 批准号:
    ST/J005681/1
  • 财政年份:
    2013
  • 资助金额:
    $ 3.43万
  • 项目类别:
    Research Grant

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    ST/N00308X/1
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