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Time profile monitor for femtosecond-long electron bunches

飞秒长电子束的时间剖面监测

基本信息

批准号：
ST/M003590/1
负责人：
Ivan Konoplev
金额：
$ 22.57万
依托单位：
University of Oxford
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FM003590%2F1
关键词：
Time profile monitor femtosecond long

项目摘要

The need for a longitudinal bunch profile, single shot, detector capable of measuring accurately the longitudinal profile and features of femtosecond single and modulated electron beam is dictated by the rapid developments in the fields of Free Electron Lasers (next generation light sources) and high-gradient particle accelerators. The temporal profiling is needed for an accelerator and FEL performance monitoring and understanding, which determine its ability of coherent x-ray generation and applicability for particle colliders and medical purpose. It is especially important for novel accelerators based on wake-field interactions where understanding of the effect of the initial conditions and environment on electron beam parameters including its shape and length are still in its infancy. Therefore the capability of a femtosecond electron beam profiling is crucial for development of these novel techniques. This proposal will underpin UK science and technology leadership in the area of high gradient particle accelerators by delivering conceptual design of a single shot monitor based on Smith-Purcell radiation. This will enable future research at DIAMOND, CERN and DESY benefit from ability to design and construct the detector capable to monitor the longitudinal profile of femtosecond electron bunches. This work will be based on the previous very encouraging results of multi-shot (electron bunch average shape) detector development by Oxford team for FACET, SLAC. The project aims to gradually move from technology development phase to technology demonstration. The proposed project is underpinned by a considerable amount of basic research already carried out (partially supported by STFC under the LC-ABD project) and still on-going E203 experiment at FACET, SLAC, USA (partially supported by STFC UK (JAI grant) and Department of Energy (USA) under (contract DE-AC02-76SF00515)). The E203 monitor, which is currently installed at FACET (SLAC), is multi-shot device. During its operation the gratings and blank are inserted sequentially i.e. one after another and, hence, the frequency spectrum cannot be covered in a single shot. The design of the monitor (i.e. gratings change mechanics, signal collection optics) is such that project's goal cannot be achieved via superficial modifications and further R&D is necessary before the design of a single-shot device can be envisioned.The ultimate goal of the project proposed is to produce a conceptual design of a single-shot monitor enabling the transition from the "technology development" stage to "technology demonstration". The conceptual design will be adaptable to meet the demands of any accelerator capable generating femtosecond (fs) and sub-fs electron bunches allowing to measure fine fs-structures of long bunches (micro-bunching) of charged particles and in particular we are interested in supporting experiments: FACET at SLAC, AWAKE at CERN and FlashForward (DESY). The key issues which we will address are:1. Novel grating design to improve cSPr and background signals discrimination2. Design of monitor's individual components 3. Conceptual design of the single-shot cSPr monitorThese will also define the work packages of the project. The data acquisition (DAQ) will not be a part of this project as the DAQ has been already developed for E203 experiment at SLAC (USA). Given a successful completion of this project it is the long term strategy to engage with commercial partners in the construction of the monitors for future experiments.

自由电子激光器（下一代光源）和高梯度粒子加速器领域的快速发展决定了对能够精确测量飞秒单束和调制电子束纵剖面和特征的纵向束形、单次发射探测器的需求。时间剖面是加速器和自由电子激光器性能监测和理解的必要条件，它决定了加速器产生相干x射线的能力以及在粒子对撞机和医疗领域的适用性。这对于基于尾流场相互作用的新型加速器尤其重要，因为对初始条件和环境对电子束参数（包括电子束的形状和长度）的影响的理解仍处于起步阶段。因此，飞秒电子束谱的能力对这些新技术的发展至关重要。该提案将通过提供基于Smith-Purcell辐射的单次监测的概念设计，巩固英国在高梯度粒子加速器领域的科学和技术领导地位。这将使DIAMOND、CERN和DESY的未来研究受益于设计和建造能够监测飞秒电子束纵剖面的探测器的能力。这项工作将基于之前牛津团队为FACET， SLAC开发的多镜头（电子束平均形状）探测器的非常令人鼓舞的结果。该项目旨在逐步从技术开发阶段进入技术示范阶段。拟议的项目得到了大量已经开展的基础研究（部分由STFC在LC-ABD项目下支持）和仍在美国SLAC FACET进行的E203实验的支持（部分由STFC英国（JAI资助）和能源部（美国）根据（合同DE-AC02-76SF00515）支持）。目前安装在FACET （SLAC）的E203监视器是多镜头设备。在其工作过程中，光栅和空白是依次插入的，即一个接一个插入，因此，不能在一次射击中覆盖频谱。监视器的设计（即光栅变化机制，信号采集光学）是这样的，项目的目标不能通过表面的修改来实现，在设计单发设备之前，需要进一步的研发。拟议项目的最终目标是提出单次监测的概念设计，使其能够从“技术发展”阶段过渡到“技术示范”阶段。概念设计将适应任何能够产生飞秒（fs）和亚fs电子束的加速器的要求，允许测量长束（微束）带电粒子的细fs结构，我们特别感兴趣的是支持实验：SLAC的FACET， CERN的AWAKE和FlashForward （DESY）。我们将解决的关键问题是：1。新型光栅设计，提高cSPr和背景信号辨别能力。监视器各部件的设计单镜头cSPr监测器的概念设计这些也将定义项目的工作包。数据采集（DAQ）将不是这个项目的一部分，因为数据采集已经在SLAC（美国）为E203实验开发。鉴于这个项目的成功完成，长期战略是与商业伙伴合作，为未来的实验建造监测器。

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）

High-power, tunable source of coherent THz radiation driven by a microbunched electron beam

由微束电子束驱动的高功率、可调谐相干太赫兹辐射源

DOI：
10.1109/pn50013.2020.9166999
发表时间：
2020
期刊：
影响因子：
0
作者：
Konoplev I
通讯作者：
Konoplev I

Conceptual design of non-destructive, time profile monitor for femtosecond-long electron bunches

DOI：
10.1063/1.4975888
发表时间：
2017-03
期刊：
影响因子：
0
作者：
I. Konoplev;H. Harrison;A. Lancaster;F. B. Taheri;G. Doucas;A. Aryshev;K. Lekomtsev;M. Shevelev;N. Terunuma;J. Urakawa
通讯作者：
I. Konoplev;H. Harrison;A. Lancaster;F. B. Taheri;G. Doucas;A. Aryshev;K. Lekomtsev;M. Shevelev;N. Terunuma;J. Urakawa

Ultimate energy recovery from spent relativistic electron beam in energy recovery linear accelerators

能量回收直线加速器中废相对论电子束的最终能量回收