Upgrade of CMS Level 1 trigger by addition of Pixel Detector data, and search for SM Higgs boson at CMS

通过添加像素探测器数据升级 CMS 1 级触发器，并在 CMS 搜索 SM 希格斯玻色子

• 批准号: 0901990
• 负责人: Ilya Kravchenko
• 金额: $ 14万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-15 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0901990&HistoricalAwards=false
• 关键词: Upgrade; CMS; Level; trigger; addition

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This award will fund the research work of Kravchenko Ilya at the University of Nebraska - Lincoln on the CMS experiment at the LHC. The focus of the proposal is the upgrade of the Level 1 (L1) trigger of CMS by including information from the Pixel Detector already at L1. The Level 1 trigger needs to operate in real time and sample interactions at a 40 MHz rate making a determination if the interaction that took place is of physics interest and should be kept for further investigation. The proposal includes the R&D needed for such addition, as well as the physical implementation and testing of the hardware. The CMS upgrade is planned to be executed in two phases. The first phase should be completed in four to five years and this proposal covers all stages from the design and system definitions up to and including the start of construction. The second phase will take an additional four to five years and this proposal covers the period up to the completion of the conceptual design and studies needed to define the project in detail. The addition of tracking to the L1 trigger system of CMS, integrated with the calorimeter and L1 muon trigger, will require original thinking and development of new algorithms and electronics components. The outcome will help to ensure the success of the CMS Physics Program by facilitating collection of larger and cleaner data sets. This award will also fund the group effort in CMS data analysis. The first step in the analysis effort will be to gain understanding of the detector and the event environment of pp collisions at 14 TeV. This will be done by measuring W and Z properties. Once this work is done the plan is to proceed and investigate WW/ZZ final states. The more distant goal is the observation of Higgs boson decays to WW/ZZ, or observation of non-standard model particles decaying to these final states. The research program also involves supporting the operations and commissioning for the existing silicon Pixel Detector of CMS, and the CMS data taking. The research program will support the University of Nebraska - Lincoln undergraduate students of Physics and Electrical Engineering majors participation in the R&D at the Silicon Laboratory on campus. The group plans to reach broader circles of UNL students by giving seminars on LHC physics at the undergraduate and graduate levels. The project is cross-disciplinary, and will involve the Electrical Engineering Department of UNL in addition to the Physics Department. This effort will require close collaboration with several US universities, and researchers at FNAL, CERN and PSI - Zurich, expanding their ties to UNL.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该奖项将资助内布拉斯加大学林肯分校的克拉夫琴科·伊利亚在LHC CMS实验中的研究工作。该提案的重点是升级CMS的1级（L1）触发器，包括来自L1像素检测器的信息。1级触发器需要在真实的时间内运行，并以40 MHz速率对相互作用进行采样，以确定所发生的相互作用是否具有物理意义，并应保留以供进一步调查。该提案包括这种增加所需的研发，以及硬件的物理实现和测试。CMS升级计划分两个阶段进行。第一阶段应在四到五年内完成，该提案涵盖从设计和系统定义到开始建造的所有阶段。第二阶段还需要四到五年时间，本提案涵盖的时期是直到完成概念设计和详细确定项目所需的研究。在CMS的L1触发系统中添加跟踪功能，并将其与量热计和L1 μ子触发器集成在一起，将需要原创性思维和开发新的算法和电子元件。结果将有助于确保CMS物理计划的成功，促进收集更大和更干净的数据集。该奖项还将资助CMS数据分析的团队工作。在分析工作的第一步将是获得在14 TeV的pp碰撞的检测器和事件环境的理解。这将通过测量W和Z属性来完成。一旦这项工作完成，计划将继续进行并调查WW/ZZ最终状态。更遥远的目标是观察希格斯玻色子衰变到WW/ZZ，或者观察非标准模型粒子衰变到这些最终状态。该研究计划还涉及支持CMS现有硅像素探测器的操作和调试，以及CMS数据采集。 该研究计划将支持内布拉斯加大学林肯分校物理和电气工程专业的本科生参与校园硅实验室的研发。该小组计划通过在本科生和研究生阶段举办LHC物理学研讨会来接触更广泛的UNL学生。该项目是跨学科的，并将涉及UNL的电气工程系除了物理系。这项工作将需要与几所美国大学以及FNAL、CERN和PSI -苏黎世的研究人员密切合作，扩大他们与UNL的联系。