Computing at the LHC

大型强子对撞机的计算

• 批准号: 9907895
• 负责人: William Willis
• 金额: $ 160万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9907895&HistoricalAwards=false
• 关键词: Computing; LHC

9907895ShaevitzThe Large Hadron Collider at CERN is expected to turn on in 2005, At that time, each of the detectors, CMS and ATLAS, is expected to produce over a petabyte of raw data per year. From these raw data, complex codes using the very latest object oriented software techniques will reconstruct the collision products of millions of "events". These codes will require fast access to huge databases that contain the complete detector description, which includes millions of calibration constants. In addition, roughly an order of magnitude more "events" than the real data will be generated via Monte Carlo techniques to determine trigger, reconstruction, and otherefficiencies. All these computer operations will occur at the CERNlaboratory in Geneva Switzerland and at several regional centers located throughout the world. CMS and ATLAS each will establish a regional center in the USA. All of the collaborating universities and laboratories in CMS and ATLAS (about 50 for each collaboration in the USA) will need fast and convenient access to the reconstructed data, both real and simulated, to perform physics analysis. This is essential if the physicists distributed throughout the USA are to have maximum impact on the physics output of these pioneering experiments. Through the R&D efforts outlined in this proposal, the process through which the analysis of the physics produced bythe LHC detectors at CERN can be analyzed by research groups in the US can take place in a timely manner. 9907895ShaevitzThe Large Hadron Collider at CERN is expected to turn on in 2005, At that time, each of the detectors, CMS and ATLAS, is expected to produce over a petabyte of raw data per year. From these raw data, complex codes using the very latest object oriented software techniques will reconstruct the collision products of millions of "events". These codes will require fast access to huge databases that contain the complete detector description, which includes millions of calibration constants. In addition, roughly an order of magnitude more "events" than the real data will be generated via Monte Carlo techniques to determine trigger, reconstruction, and otherefficiencies. All these computer operations will occur at the CERNlaboratory in Geneva Switzerland and at several regional centers located throughout the world. CMS and ATLAS each will establish a regional center in the USA. All of the collaborating universities and laboratories in CMS and ATLAS (about 50 for each collaboration in the USA) will need fast and convenient access to the reconstructed data, both real and simulated, to perform physics analysis. This is essential if the physicists distributed throughout the USA are to have maximum impact on the physics output of these pioneering experiments. Through the R&D efforts outlined in this proposal, the process through which the analysis of the physics produced bythe LHC detectors at CERN can be analyzed by research groups in the US can take place in a timely manner.

欧洲核子研究中心的大型强子对撞机预计将于2005年启动，届时，CMS和ATLAS的每一个探测器预计每年将产生超过1 PB的原始数据。 从这些原始数据中，使用最新的面向对象软件技术的复杂代码将重建数百万个“事件”的碰撞产物。 这些代码需要快速访问包含完整探测器描述的庞大数据库，其中包括数百万个校准常数。 此外，将通过蒙特卡罗技术生成比真实的数据大约多一个数量级的“事件”，以确定触发、重建和其他影响。 所有这些计算机操作将在瑞士日内瓦的CERN实验室和位于世界各地的几个区域中心进行。 CMS和ATLAS将各自在美国建立一个区域中心。CMS和ATLAS中的所有合作大学和实验室（在美国每个合作约50个）都需要快速方便地访问重建的数据，包括真实的和模拟的，以执行物理分析。 如果分布在美国各地的物理学家要对这些开创性实验的物理输出产生最大影响，这是必不可少的。通过本提案中概述的研发工作，CERN的LHC探测器产生的物理分析可以及时由美国的研究小组进行分析。欧洲核子研究中心的大型强子对撞机预计将于2005年启动，届时，CMS和ATLAS的每一个探测器预计每年将产生超过1 PB的原始数据。 从这些原始数据中，使用最新的面向对象软件技术的复杂代码将重建数百万个“事件”的碰撞产物。 这些代码需要快速访问包含完整探测器描述的庞大数据库，其中包括数百万个校准常数。 此外，将通过蒙特卡罗技术生成比真实的数据大约多一个数量级的“事件”，以确定触发、重建和其他影响。 所有这些计算机操作将在瑞士日内瓦的CERN实验室和位于世界各地的几个区域中心进行。 CMS和ATLAS将各自在美国建立一个区域中心。CMS和ATLAS中的所有合作大学和实验室（在美国每个合作约50个）都需要快速方便地访问重建的数据，包括真实的和模拟的，以执行物理分析。 如果分布在美国各地的物理学家要对这些开创性实验的物理输出产生最大影响，这是必不可少的。通过本提案中概述的研发工作，CERN的LHC探测器产生的物理分析可以及时由美国的研究小组进行分析。