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Experimental study of particle physics in TeV region at LHC

LHC TeV 区域粒子物理实验研究

基本信息

批准号：
08044101
负责人：
IWASAKI Hiroyuki
金额：
$ 20.29万
依托单位：
High Energy Research Organization (KEK), Institute of Particle and Nuclear Studies (IPNS)
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

Standard model explains the origin of particle masses with the Higgs mechanism. Self interaction of scalar particles result in a spontaneous symmetry breaking of the vacuum. One scalar particle, called Higgs particle, is a physically observable particle. Its mass is expected to be less than approximately 1 TeV.Supersymmetric particles are also expected to be in this energy region. Large Hadron Collider (LHC) project at CERN was officially approved in December 1994, and is scheduled to be operational in 2005. LHC is a proton-proton collider with the beam energy of 7 TeV,approximately one order of magnitude higher than the present highest machine energy. ATLAS experiment is a general purpose detector to study the 1 TeV energy region using this machine.We have been doing research and development for the ATLAs detector in collaboration with physicists from 33 countries. We have been contributing to the following five items : (1) Muon detector and trigger system, (2) Silicon detector, (3) Superconducting solenoid, (4) High-speed data acquisition sytem, and (5) Software for physics analysis. As for the muon detector and trigger system, we submitted a detailed technical design report (TDR). We are totally responsible for the construction of the superconducting solenoid with 2 tesla of a mgnetic field. A detailed TDR was submitted, and the solenoid is now under construction. As for the trigger system and the high-speed data acquisition system, we have done detailed design, and are preparing for a TDR.As for the software, we developed software tools based on object oriented technology. We especially concentrated on "GEANT4", a detailed detector simulation package. Throughout the research and developments in the ATLAS collaboration, close contact and dense discussions with collaborators are essential. It was only possible to make fruitful research with using the grant-in-aid.

标准模型用希格斯机制解释了粒子质量的起源。标量粒子的自相互作用导致真空对称性自发破缺。一种标量粒子，称为希格斯粒子，是一种物理上可观测的粒子。其质量预计小于约 1 TeV。超对称粒子也预计位于该能量区域。欧洲核子研究中心的大型强子对撞机（LHC）项目于1994年12月正式立项，计划于2005年投入运行。LHC是一台质子-质子对撞机，束流能量为7 TeV，比目前最高机器能量高出约一个数量级。 ATLAS实验是一种通用探测器，使用该机器研究1TeV能量区域。我们一直在与来自33个国家的物理学家合作进行ATLAs探测器的研究和开发。我们一直致力于以下五个项目：（1）μ子探测器和触发系统，（2）硅探测器，（3）超导螺线管，（4）高速数据采集系统，以及（5）物理分析软件。对于μ子探测器和触发系统，我们提交了详细的技术设计报告（TDR）。我们完全负责建造具有 2 特斯拉磁场的超导螺线管。详细的 TDR 已提交，螺线管目前正在建造中。对于触发系统和高速数据采集系统，我们已经做了详细的设计，并正在准备TDR。对于软件，我们开发了基于面向对象技术的软件工具。我们特别关注“GEANT4”，一个详细的探测器模拟包。在 ATLAS 合作的整个研发过程中，与合作者的密切接触和深入讨论至关重要。只有利用补助金才能进行富有成效的研究。