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，以便为高级韦克菲尔德实验作出重要贡献，该实验是等离子体韦克菲尔德加速研究领域的主要全球项目之一。在过去的十年中，通过等离子体中的诱导韦克菲尔德加速方案已经证明了超过GV/m的梯度，比现有的射频技术高出3个数量级以上，并且为粒子物理学、X射线科学和医学应用提供了更紧凑和负担得起的未来加速器。在PWFA项目中独一无二的是由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是引人注目的。同时，通过长质子束团实现与毫米级等离子体波的同步是一个挑战。因此，实验的一个主要重点是展示一种新的机制，质子束纵向自我调制等离子体内部，这一概念的成功至关重要。预计2016年初将有第一批质子进入实验。 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在探索未来加速器的转型技术方面拥有独特的资质和使命。第一步是通过加入具有坚实科学价值和经验证的证书的AWAKE合作。 · TRIUMF为AWAKE提供了新型的束流诊断技术，其成功取决于质子、电子和激光束之间在空间和时间上的良好定义和可控关系，对束流诊断的分辨率、准确度和灵敏度提出了严格的要求。TRIUMF建议开发和制造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流位置监测器（BPM），包括单束团电子设备。 ·随着机会的出现，TRIUMF也为AWAKE实验的其他方面做出了贡献，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，新的思想和方法已经成熟，是培养高级研究生的理想环境。在这份提案中，我们要求为2名研究生的活动提供资金。TRIUMF最近被接纳为AWAKE合作的正式成员。及时资助目前的提案将确保TRIUMF和整个加拿大科学在未来基础和应用物理学研究的这一重要领域的稳固存在。