Collaborative Research: MRI-Consortium for the Development and Construction of a Longitudinally Polarized Proton and Deuteron Target for CLAS12 at Jefferson Lab

该奖项由2009年美国复苏和再投资法案(公法111-5)资助。该奖项是为了表彰克里斯托弗·纽波特大学(CNU)、老道明大学(ODU)和弗吉尼亚大学(UVA)的研究人员共同努力开发和构建纵向极化的质子和氚靶。作为杰斐逊实验室(JLab)12GeV计划的一部分，该靶将作为PAC批准的高优先级电子散射实验的重要组成部分与CLAS12探测器一起使用，以研究核子的内部结构。这将扩展JLab的自旋结构程序，并用于确定价夸克对核子性质的贡献。靶将在~1K下使用标准固体材料(15NH3，15Nd3，可能还有LID)，并将在CLAS12中心螺线管的5T场中动态极化。这一目标的设计和建设将对未来科学家的培养产生积极影响，因为本科生和研究生将深入参与这一过程。这一奖项将使UVA的专家能够将知识转移给其他研究人员。带有建议规格的极化目标将对杰斐逊实验室的研究计划产生强烈影响。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This award is for a collaborative effort of researchers from Christopher Newport University (CNU), Old Dominion University (ODU), and the University of Virginia (UVA) to develop and construct a longitudinally polarized proton and deuteron target. This target is intended to be used with the CLAS12 detector as an essential part of the high-priority PAC approved electron scattering experiments to study the internal structure of the nucleon as part of the 12 GeV program at Jefferson Lab (JLab). This will expand the spin structure program at JLab and be used to determine the contribution of the valance quarks to the properties of the nucleon. The target will use standard solid materials (15NH3, 15ND3, and possibly LiD) at ~1K and will be dynamically polarized in the 5 T field of the CLAS12 central solenoid. The design and construction of this target will have positive impacts on the training of future scientists because undergraduate and graduate students will be deeply involved in the process. This award will enable the knowledge transfer from experts at UVA to other researchers. A polarized target with the proposed specifications will have a strong impact on the research program at Jefferson Lab.