Development of Electro-Optic Beam Position Monitors for the Large Hadron Collider

大型强子对撞机电光束位置监测仪的研制

• 批准号: 1813619
• 金额: --
• 依托单位: Royal Holloway University of London
• 依托单位国家: 英国
• 项目类别: Studentship
• 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
• 来源: https://gtr.ukri.org/projects?ref=studentship-1813619
• 关键词: Development; Electro; Optic; Beam; Position

A collaboration between the CERN Beam Instrumentation group and Royal Holloway, University of London (RHUL) aims to develop novel optical Beam Position Monitors. The long term objective is to build a system to monitor proton bunch rotation induced by crab-cavities at the future High Luminosity Large Hadron Collider, by exploiting the fast time response of electro- optic crystals. A change in the polarization of light passing through the crystal is induced by the electro-optic (Pockels) interaction with the passing charged particle bunch. Rapid detection (lOGHz bandwidth) of the optical signals from pick-ups placed on opposite sides of the beam pipe, allow transverse offsets of particles within a bunch to be monitored, at different positions along the ns bunch. The RHUL PhD student will join this collaborative experimental program to develop the optical BPM for tests in the CERN accelerator chain, including tests of a prototype EO-BPM that has been installed during 2016 in the CERN SPS. The student will evaluate initial results in comparison with electromagnetic simulations, and extend the design to an interferometric configuration to assess the potentially improved sensitivity. Pending successful tests at the SPS, a prototype EO-BPM for the LHC will be designed and manufactured for benchtests at RHUL and CERN. The position will be based at Royal Holloway, University of London, and travel to CERN is expected. The student will benefit from the support and training in the RHUL John Adams Institute, including lectures in accelerator physics, and the wider network of the new HL-LHC-UK collaboration.

伦敦大学（RHUL）的Cern Beam仪器组与皇家Holloway之间的合作旨在开发新颖的光束位置监测器。长期目标是通过利用电晶体的快速时间响应来构建一个系统，以监测未来高光度大强调对撞机在未来高光度大型强子对撞机上引起的质子束旋转。通过晶体（Pockels）的相互作用与传递的带电粒子束的相互作用诱导了通过晶体的光的极化变化。从放置在梁管相对侧的拾音器的光学信号的快速检测（LOGHZ带宽），允许在沿着NS束的不同位置监测一堆粒子的横向偏移。 Rhul PhD学生将加入该协作实验计划，开发用于CERN ACCELERATOR链中测试的光学BPM，包括对2016年在CERN SPS中安装的原型EO BPM的测试。与电磁模拟相比，学生将评估初始结果，并将设计扩展到干涉构型，以评估潜在的提高灵敏度。在SPS的成功测试之前，将为LHC的原型EO-BPM设计和制造用于Rhul和Cern的台式测试。该职位将总部设在伦敦皇家霍洛威大学，预计前往CERN。该学生将受益于Rhul John Adams Institute的支持和培训，包括Accelerator Physics的讲座以及新的HL-LHC-IK合作的更广泛网络。