SoLID（Solenoidal Large Intensity Device）白皮书
A White Paper on SoLID (Solenoidal Large Intensity Device)
摘要：
为了充分发挥Jefferson实验室12 GeV能量升级后的物理潜力，提出了一种新的螺线管大接受装置（Solenoidal Large Acceptance Device，SoLID）。SoLID光谱仪具有独特的大接受度和高亮度的能力，非常适合在半包容DIS中进行精确测量，以研究核子的横向自旋和横向动量相关部分子分布，并用于宇称破坏深度非弹性散射（DIS），以在低能下对标准模型进行精确测试，并解决核子结构中的特定问题，包括电荷对称性破坏，d/u比和双夸克引起的高扭曲效应。SoLID对于在阈值区域精确测量J/π电产生以研究非微扰胶子动力学和相互作用也是必不可少的。五个高评价的SoLID实验和两个“运行组”实验已获得JLab物理咨询委员会的批准。物理程序连同SoLID仪器及其当前状态的概述一起介绍。
英文摘要：
In order to fully exploit the physics potential of Jefferson Lab after 12 GeV energy upgrade, a new Solenoidal Large Acceptance Device (SoLID) is proposed. The SoLID spectrometer, with its unique capability of large acceptance and high luminosity, is ideal for precision measurements in semi-inclusive DIS to study transverse spin and transverse-momentum-dependent parton distributions of the nucleon, and for parity-violating Deep Inelastic Scattering (DIS) to perform precision tests of the Standard Model at low energy as well as addressing specific issues in nucleon structure including charge symmetry violation, d/u ratio and higher-twist effects due to di-quark. SoLID is also essential for precision measurements of J/ψelectroproduction in the threshold region to study non-perturbative gluon dynamics and interaction. Five highly rated SoLID experiments and two "run group" experiments have been approved by the JLab Physics Advisory Committee. The physics program is presented along with an overview of the SoLID instrumentation and its current status.
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