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

高光度大型强子对撞机电光束位置监测仪的研制

• 批准号: 2782220
• 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: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2782220
• 关键词: Development; Electro; Optic; Beam; Position

The High Luminosity Large Hadron Collider is a major accelerator upgrade at CERN that will increase the luminosity delivered to the ATLAS and CMS experiments by an order of magnitude. The upgrade will enable the search for new, rare particles and precision measurements of the standard model of particle physics. The HL-LHC will achieve this luminosity increase by a combination of focusing the proton beams more tightly at the interaction points, increasing the beam current and crab-rotating the bunches to maximise the geometric overlap between the colliding beams. Optimising the performance of the crab-cavities at the HL-LHC requires challenging new instrumentation that can measure the transverse shape of a 1ns long proton bunch passing by at nearly the speed of light.To address this exciting challenge, Prof Stephen Gibson leads the UK collaboration between the CERN Beam Instrumentation group and Royal Holloway, University of London (RHUL) to develop novel Electro-Optic Beam Position Monitors (EO-BPM). The aim is to use electro-optical crystals that have a time response in the picosecond range to enable an ultra-fast optical response to the passing relativistic bunch. The PhD candidate will join this CERN-RHUL collaborative experimental program to develop electro-optical BPMs for tests at CERN's flagship accelerator, the LHC.The PhD position will be based at Royal Holloway, University of London, where the student will be initially trained to perform experimental bench tests in laser rooms and clean rooms at Royal Holloway, and to perform electromagnetic simulations of the relativistic bunch, the electro-optic response and develop ultrafast optical detection techniques. The student will also attend lectures in accelerator physics at the University of Oxford during the first year, as part of the training provided by the John Adams Institute for Accelerator Science.After the initial training in the UK, the student will move to CERN to participate in operational beam tests of the prototype at the SPS accelerator. The student have the opportunity to acquire and analyse data from the EO-BPM device during Run-III of the LHC, with the aim of validating this new method for deployment of these new devices at the HL-LHC. Following successful demonstration, publications of the results and participation in international conferences is expected.The student would join a friendly team at RHUL and benefit from the direct supervision of Prof. Stephen Gibson, and collaborate with the team at CERN. The PhD candidate would also benefit from the wider support and training network of the John Adams Institute for accelerator science, a centre of excellence in the UK for advanced and novel accelerator technology, providing expertise, research, development and training in accelerator techniques, and promoting advanced accelerator applications in science and society.

高亮度大型强子对撞机是 CERN 的一项主要加速器升级，它将把 ATLAS 和 CMS 实验的亮度提高一个数量级。此次升级将使人们能够寻找新的稀有粒子以及粒子物理标准模型的精确测量。 HL-LHC 将通过将质子束更紧密地聚焦在相互作用点、增加束流和蟹状旋转束束以最大化碰撞束之间的几何重叠来实现亮度增加。优化 HL-LHC 蟹腔的性能需要具有挑战性的新仪器，该仪器可以测量以接近光速经过的 1 纳秒长质子束的横向形状。为了应对这一令人兴奋的挑战，斯蒂芬·吉布森教授领导了英国CERN 光束仪器小组与伦敦大学皇家霍洛威学院 (RHUL) 合作开发新型电光光束位置监视器 (EO-BPM)。其目的是使用具有皮秒范围时间响应的电光晶体，以实现对经过的相对论束的超快光学响应。博士生将加入 CERN-RHUL 合作实验项目，开发电光 BPM，以便在 CERN 旗舰加速器 LHC 上进行测试。博士生职位将设在伦敦大学皇家霍洛威学院，学生将在那里接受初步培训在皇家霍洛威学院的激光室和洁净室中进行实验台测试，并对相对论束、电光响应进行电磁模拟，并开发超快光学探测技术。作为约翰·亚当斯加速器科学研究所提供的培训的一部分，该学生还将在第一年参加牛津大学的加速器物理学讲座。在英国完成初步培训后，该学生将前往欧洲核子研究组织（CERN）参加在 SPS 加速器上对原型进行操作光束测试。学生有机会在大型强子对撞机运行 III 期间获取和分析来自 EO-BPM 设备的数据，目的是验证在 HL-LHC 上部署这些新设备的新方法。成功演示后，预计将发表结果并参加国际会议。学生将加入 RHUL 的友好团队，并受益于 Stephen Gibson 教授的直接监督，并与 CERN 的团队合作。博士候选人还将受益于约翰·亚当斯加速器科学研究所更广泛的支持和培训网络，该研究所是英国先进和新颖加速器技术的卓越中心，提供加速器技术方面的专业知识、研究、开发和培训，并促进先进的加速器在科学和社会中的应用。