Canada's contribution to AWAKE - a proton-driven plasma wakefield experiment at CERN

加拿大对 AWAKE 的贡献 - 欧洲核子研究中心的质子驱动等离子体尾场实验

• 批准号: SAPPJ-2018-00019
• 负责人: Baartman, Richard
• 金额: $ 1.09万
• 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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718934
• 关键词: Canada; contribution; AWAKE; proton; driven

Proposal for continuing TRIUMF participation in the AWAKE collaboration, 2018-2021 For the last three years TRIUMF has been an active member of the AWAKE collaboration. a) Operation and service TRIUMF has manufactured, delivered and installed all the equipment it committed to contribute for the AWAKE experiment. Part of the hardware, such as BPM electronics, is a complex, state-of-the-art piece of instrumentation. The AWAKE collaboration expects the TRIUMF group to provide continuous support of the equipment that it has built. This task will require regular travels to CERN to participate in experiment runs, to troubleshoot, and to repair the hardware in case of failures. A few spare parts have also to be procured and built. b) System Upgrade The overall success of the AWAKE experiment depends on the ability to precisely control proton, electron and laser beams in time and space. In particular, the electron beam is expected to transversely overlap with the proton bunch and stay longitudinally behind the laser pulse by a defined amount of time. This task is impossible to perform without proper beam instrumentation. In principle, one can separately measure the position of the proton and electron bunches, since electrons' repetition rate is 10 Hz, while the proton beam is expected only about every 30 seconds. Thus, the electron position can be measured when protons are not available. The valid concern here is that the Coulomb field of the proton bunch will deflect the electrons as they tend to approach and then the electron beam position measured in the absence of the proton bunch will be different from the practically important case when both beams co-propagate together. For this reason it was requested that the two last TRIUMF beam position monitors measure the electron beam position in the presence of proton bunches. c) New diagnostics development for Run 2 Compared to the Run 1 the bunch length is reduced by a factor of 20-30 and to keep the emittance low the bunch charge is correspondingly reduced three times. With such a lower bunch charge the beam position monitor electronics TRIUMF developed for Run 1 will not meet the resolution requirement of 50 micrometers shot-to-shot. Thus, TRIUMF is asked to modify the existing electronics to increase the signal-to-noise ratio. Budget: To support two to three students to work on various aspects of AWAKE beam diagnostics development ($36k for 2 years). To develop and build diagnostics hardware, upgrade the associated electronics and the acquisition system ($117k). Travel funds to participate in experimental runs, operate and service the hardware and travel for collaboration meetings ($24k). Total request: $177k over 3 years. 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.

持续凯姆夫（Triumf）参加清醒合作的提案，2018-2021 在过去的三年中，Triumf一直是Awake合作的积极成员。 a）操作和服务 Triumf已经制造，交付和安装了为醒着实验做出贡献的所有设备。硬件的一部分，例如BPM电子产品，是一种复杂的最先进的仪表。 Awake合作期望Triumf Group为其建造的设备提供持续的支持。此任务将需要定期前往CERN参加实验运行，进行故障排除以及在发生故障时修复硬件。还必须采购和建造一些备件。 b）系统升级 清醒实验的总体成功取决于时间和空间中精确控制质子，电子和激光束的能力。特别是，预计电子束将与质子束横向重叠，并在激光脉冲后面纵向停留在固定的时间后面。如果没有适当的光束仪器，就无法执行此任务。原则上，由于电子的重复速率为10 Hz，因此可以单独测量质子和电子束的位置，而预期质子束仅每30秒钟约每30秒。因此，当质子不可用时可以测量电子位置。这里有效的关注是，质子束的库仑场会在电子倾向于接近时偏转电子，然后在没有质子束的情况下测量的电子束位置与两种光束共同填充在一起时实际上重要的情况。因此，要求在存在质子束的情况下测量两个最后一个triumf束位置监测电子束位置。 c）运行2的新诊断开发2 与运行1相比，束长度减少了20-30倍，为了保持发射率低，束电荷相应降低了3次。 通过如此较低的束电荷，梁位置监视器电子设备为运行1开发的TriumF将无法满足50微米射击的分辨率要求。因此，要求Triumf修改现有电子设备以增加信噪比。 预算： 支持两到三个学生从事清醒梁诊断开发的各个方面（2年$ 36K）。 要开发和构建诊断硬件，请升级相关的电子设备和采集系统（$ 117K）。 旅行资金参加实验跑步，运营和为合作会议的硬件和旅行服务（24,000美元）。 总请求：3年内$ 177,000美元。 当前提案的及时资金将确保在这一重要的明天基本和应用物理学的研究领域，确保凯纳德科学的牢固存在。