Canada’s contribution to AWAKE – a plasma wakefield experiment at CERN

加拿大对 AWAKE 的贡献 - 欧洲核子研究组织 (CERN) 的等离子体尾场实验

• 批准号: SAPPJ-2016-00030
• 负责人: Baartman, Richard
• 金额: $ 9.47万
• 依托单位: TRIUMF
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Project
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616845
• 关键词: Canada; contribution; AWAKE; plasma; wakefield

This proposal seeks funding for Canada to make an important contribution to the Advanced Wakefield Experiment (AWAKE), one of the leading global projects in the field of plasma wakefield acceleration (PWFA) research. In the past decade acceleration schemes by induced wakefield in plasmas have demonstrated gradients in excess of GV/m, more than 3 orders of magnitude higher than existing radio frequency technology, and hold promise of more compact and affordable future accelerators for particle physics, X-ray science, and medical applications. Unique among PWFA projects and first of its kind is the AWAKE experiment driven by 400 GeV proton beam from the CERN SPS synchrotron. The potential of single-stage energy transfer by proton, and its advantage over multi-stage electron driven alternatives, are compelling. In the meantime achieving synchronism with the plasma wave at a mm length scale by the long proton bunch is a challenge. A major focus of the experiment is thus to demonstrate a novel mechanism, proton bunch longitudinal self-modulation inside the plasma, critical to the success of this concept. First protons to the experiment are expected early in 2016. As Canada’s leading laboratory in particle and nuclear physics, material science and nuclear medicine, and its center for accelerator science, TRIUMF has unique qualifications and a mandate in exploring transformational technologies for future accelerators. A first step is taken by joining the AWAKE collaboration with solid scientific merit and proven credentials. • TRIUMF contributes novel beam diagnostics for AWAKE, whose success depends on well-defined and controllable relations among proton, electron and laser beams in space and in time, imposing tight requirements on resolution, accuracy and sensitivity of beam diagnostics. TRIUMF proposes to develop and construct high sensitivity Faraday Cups for electron beam charge measurements, and beam position monitors (BPMs), including single bunch electronics, for position measurements. • As opportunities arise TRIUMF contributes to other aspects of the AWAKE experiment, such as the rubidium plasma source. • TRIUMF plans to participate in the execution and analysis of PWFA experiments. The field is still in its inception stage and ripe for new ideas and methods, an ideal environment for training advanced graduate students. In this proposal we request funding for activities of 2 graduate students. TRIUMF was recently accepted as a full member of the AWAKE collaboration. Timely funding of the current proposal will secure a firm presence of TRIUMF, and Canadian Science at large, in this vital area of research for fundamental and applied physics of tomorrow.

该提案寻求为加拿大提供资金，以便为先进韦克场实验（AWAKE）做出重要贡献，该实验是等离子体尾场加速（PWFA）研究领域的全球领先项目之一。在过去的十年中，等离子体中诱导尾场的加速方案已证明梯度超过 GV/m，比现有射频技术高出 3 个数量级以上，并有望为粒子物理、X 射线科学和医学应用提供更紧凑、更经济的未来加速器。 PWFA 项目中的独特之处和同类首创是由来自 CERN SPS 同步加速器的 400 GeV 质子束驱动的 AWAKE 实验。质子单级能量转移的潜力及其相对于多级电子驱动替代方案的优势非常引人注目。与此同时，通过长质子束在毫米长度范围内实现与等离子体波的同步是一个挑战。因此，该实验的一个主要焦点是证明一种新颖的机制，即等离子体内部的质子束纵向自调制，这对于这一概念的成功至关重要。第一批质子预计将于 2016 年初投入实验。 作为加拿大领先的粒子和核物理、材料科学和核医学实验室及其加速器科学中心，TRIUMF 拥有独特的资格和使命，致力于探索未来加速器的变革技术。第一步是以扎实的科学价值和经过验证的资历加入 AWAKE 合作。 • TRIUMF 为 AWAKE 提供了新颖的光束诊断技术，其成功取决于质子、电子和激光束在空间和时间上明确且可控的关系，对光束诊断的分辨率、准确性和灵敏度提出了严格的要求。 TRIUMF 建议开发和构建用于电子束电荷测量的高灵敏度法拉第杯，以及用于位置测量的束位置监视器（BPM），包括单束电子器件。 • 随着机会的出现，TRIUMF 为 AWAKE 实验的其他方面做出贡献，例如铷等离子体源。 • TRIUMF 计划参与PWFA 实验的执行和分析。 该领域仍处于起步阶段，新思想和新方法已经成熟，是培养高级研究生的理想环境。在本提案中，我们请求为 2 名研究生的活动提供资金。 TRUMF 最近被接纳为 AWAKE 合作组织的正式成员。当前提案的及时资助将确保 TRIUMF 和整个加拿大科学界在这一未来基础和应用物理学的重要研究领域中占据稳固地位。