MRI-Consortium: Development of the Pre-Shower Calorimeter for the CLAS12 Detector at Jefferson Lab

MRI 联盟：杰斐逊实验室为 CLAS12 探测器开发预喷热量计

• 批准号: 0821173
• 负责人: Kenneth Hicks
• 金额: --
• 依托单位: Ohio University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-10-01 至 2010-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0821173&HistoricalAwards=false
• 关键词: MRI; Consortium; Development; Pre; Shower

The funding for this proposal is to build a particle detector for experiments conducted at Thomas Jefferson National Accelerator Facility. The instrumentation to be build will be part of the CLAS12 detector, located in the Hall-B location where high-energy electrons will be incident onto targets of protons and neutrons. The purpose of these experiments is to learn more about the quarks inside the target nucleons. In particular, the quantum mechanical properties of the quarks, such as the orbital angular momentum, can be determined from a combination of the quark radial distributions, correlated with their momentum distributions. Such measurements are known as Generalized Parton Distributions, or GPDs. Other measurements, such as the space-time evolution of the quarks turning into fully-fledged particles after being struck by a high-energy electron, will also be carried out at this detector. These measurements will contribute to our understanding of Quantum Chromodynamics, or QCD, which underlies the fundamental force between quarks and gluons. In the process, the technology to detect particles from electron-scattering reactions will be extended to higher energies. Improvements in technology are the cornerstone of advances in a range of applications such as medical imaging. The detector components funded by this MRI will be constructed at the following institutions: Ohio University, James Madison University, College of William and Mary, and Norfolk State University, with labor provided by students (both undergraduate and graduate), postdoctoral researchers and faculty, in collaboration with Jefferson Lab staff. This provides valuable technical experience for the students and postdocs that will enhance their career opportunities.

该提案的资金是为托马斯·杰斐逊国家加速器设施进行的实验建造一个粒子探测器。 即将建造的仪器将是 CLAS12 探测器的一部分，位于 Hall-B 位置，高能电子将在此入射到质子和中子的目标上。 这些实验的目的是更多地了解目标核子内部的夸克。 特别是，夸克的量子力学性质，例如轨道角动量，可以通过与其动量分布相关的夸克径向分布的组合来确定。 此类测量称为广义帕顿分布 (GPD)。其他测量，例如夸克在被高能电子撞击后变成成熟粒子的时空演化，也将在该探测器上进行。 这些测量将有助于我们理解量子色动力学（QCD），它是夸克和胶子之间基本力的基础。 在此过程中，检测电子散射反应粒子的技术将扩展到更高的能量。 技术进步是医学成像等一系列应用进步的基石。 由该 MRI 资助的探测器组件将在以下机构建造：俄亥俄大学、詹姆斯麦迪逊大学、威廉玛丽学院和诺福克州立大学，由学生（本科生和研究生）、博士后研究人员和教师与杰斐逊实验室工作人员合作提供劳动力。 这为学生和博士后提供了宝贵的技术经验，从而增加了他们的职业机会。