Relativistic Heavy Ion Physics

相对论重离子物理

• 批准号: 0457324
• 负责人: Daniel Cebra
• 金额: --
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0457324&HistoricalAwards=false
• 关键词: Relativistic; Heavy; Ion; Physics

The goal of this project is the study of collisions between relativisticnuclei and ultimately the determination of the properties of nuclearmatter over a wide range of temperatures and densities. Extremely hot ordense objects which are made of nuclear matter exist in the cosmos;however, without the possibility direct study of the interiors of neutron stars, or of the first moments of a supernova, or of the earliest moments of the Big Bang, one resorts to the challenging studies of finite and transient systems as provided by nucleus-nucleus collisions. Ithas become clear that in order to understand the nuclear equation of stateor to identify a transistion to a new state of matter, the quark-gluonplasma, it will require a comprehensive and correlated set of measurementsas well as extensive calculations which relate the observables to thenuclear matter variables. This project focuses on the acquisition andanalysis of such a set of data using the Solenoidal Tracker at RHIC (STAR)experiment at the Relativistic Heavy Ion Collider (RHIC) located atBrookhaven National Laboratory in New York and using the Compact Muon Solenoid (CMS) at the Large Hadron Collider (LHC) located at the European Center for Nuclear Research (CERN) in Geneva, Switzerland. The collection of detector systems which make up both the STAR and CMS experiment provide detailed information about individualcollision events. The UCD group will use data from these detectors toreconstruct the events and infer, from the recorded debris, both thedynamics and the thermodynamics of the collision. By scanning from injection energy at RHIC to the full energy for ions at the LHC, the energy range from twenty to six thousand times the rest mass will be explored.

该项目的目的是研究相对性核中的碰撞，并最终确定核木材在广泛的温度和密度中的性质。宇宙中存在于核物质制成的极热的物体；但是，在不可能直接研究中子恒星的内部，或超新星的第一刻，或大爆炸的最早时刻的第一瞬间，一个人求助于Nucleus-Nucleus Collisions提供的有限和瞬态系统的挑战性研究。很清楚的是，为了理解州长的核方程，以识别与新物质状态夸克 - 杜朗倍年度的晶体，它将需要一组全面且相关的测量集以及广泛的计算，这些计算将可观察到的物品与当时的物质变量相关联。该项目着重于使用位于纽约的Atbrookhaven国家实验室的RHIC（Star）实验的螺线管（Star）实验的螺线管跟踪器的获取和分析，并使用位于欧洲大型Hadron Collider（LHC）的紧凑型MUON螺栓（CMS）的紧凑型MUON螺栓（CMS）的核研究（CMS）。构成Star和CMS实验的探测器系统的收集提供了有关个人碰撞事件的详细信息。 UCD组将使用这些检测器中的数据，并从记录的碎片中推断出碰撞的动力学和热力学。通过从RHIC的注射能量扫描到LHC的离子的全能量，将探索剩余质量的二十至六千倍的能量范围。