RUI: Probing Subatomic Physics Via Lepton Interactions

RUI：通过轻子相互作用探索亚原子物理

• 批准号: 1307196
• 负责人: Maria Niculescu
• 金额: $ 31.5万
• 依托单位: James Madison University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-15 至 2017-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1307196&HistoricalAwards=false
• 关键词: RUI; Probing; Subatomic; Physics; Via

The Particle and Nuclear Physics group at James Madison University aims to be a key contributor to state of the art research in Intermediate Energy Nuclear Physics while providing an outstanding educational experience for undergraduate students. The three faculty members and their students focus on research designed to explore the structure of nucleons (neutrons and protons) which are the basic building blocks of any atomic nucleus. While it is understood that nucleons are composed of three interacting (via gluon exchange) quarks (viewed as fundamental particles) the picture of the mechanisms that give rise and govern the evolution of multi-quark systems (protons, neutrons, nuclei) is not yet complete. The group participates in studies aimed at clarifying this picture by charting the structure of nuclei and nucleons using electron, muon, and photon probes. Group members are deeply involved in the efforts of building the hardware (detector development), software, as well as the organizational infrastructure needed to carry out this research program. Currently the group is actively involved in ongoing research at Jefferson Lab in experimental Halls A, B, and C (inclusive electron scattering off the nucleon, duality studies, strangeness production) and Fermilab (the muon gyromagnetic constant, g-2). Additionally, the JMU-PNP group members are key participants in detector and software development (Hall C: scintillator hodoscope detector, ROOT/C++ data analysis code; Hall B: forward tagger, preshower calorimeter) that is part of the 12 GeV energy upgrade at Jefferson Lab and are principal investigators on experiments that will take advantage of this upgrade. The group's success can be measured through the number of publications, signaling the deepening of our understanding of subnuclear matter. Equally as important success can be gauged also through the number of undergraduate students that gain invaluable experience by pursuing research in our group.

詹姆斯麦迪逊大学的粒子和核物理小组旨在成为中能核物理最先进研究的关键贡献者，同时为本科生提供出色的教育体验。这三位教师和他们的学生专注于旨在探索核子（中子和质子）结构的研究，核子是任何原子核的基本组成部分。虽然我们知道核子是由三个相互作用（通过胶子交换）的夸克（被视为基本粒子）组成的，但产生和支配多夸克系统（质子、中子、原子核）演化的机制的图景还不完整。该小组参与了旨在通过使用电子、μ子和光子探针绘制原子核和核子结构来澄清这一图景的研究。小组成员深入参与了硬件（探测器开发）、软件以及执行该研究计划所需的组织基础设施的建设工作。目前，该小组正在积极参与杰斐逊实验室在实验霍尔斯A，B和C（包括电子散射的核子，对偶性研究，奇怪的生产）和费米实验室（μ子旋磁常数，g-2）正在进行的研究。此外，JMU-PNP小组成员是探测器和软件开发的关键参与者（C厅：闪烁体hodoscope探测器，ROOT/C++数据分析代码; B厅：前向标记器，预洒量能器），这是杰斐逊实验室12 GeV能量升级的一部分，并且是利用这次升级的实验的主要研究者。该小组的成功可以通过出版物的数量来衡量，这标志着我们对亚核物质的理解不断加深。同样重要的成功也可以通过在我们小组进行研究获得宝贵经验的本科生人数来衡量。