Accelerator and nuclear physics with colliders of electron-cooled GeV nuclei and electrons

电子冷却 GeV 原子核和电子对撞机的加速器和核物理

• 批准号: 11691127
• 负责人: HATANAKA Kichiji
• 金额: $ 2.11万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11691127/
• 关键词: Collider; High luminosity; Electron cooling; QCD; Medium effects; Eddy current

Physics at energies covered by colliders of electron-cooled GeV nuclei and electrons is very important for studies from non-perturbed to perturbed QCD(Quantum ChromoDynamics). In this research project, we investigated followings.1.From the experimental point of view, luminosities should be as large as 10^<33>cm^<-2>s^<-1>. In order to realize this luminosity, it was found that the electron cooling of ions at the maximum energy is inevitable.2.A conceptual design of the accelerator lattice was performed based on the ion optical studies. It was found that there are optimum combinations between energies of nuclei and electrons.3.It was found from our researches at RCNP that the temperature control of cooling water by 0.1°is a key issue to stabilize accelerators.4.High performance magnets were designed and eddy current effects were investigated from the ion optical point of view.5.The medium modification of hadron properties in nuclei is one of most important and inter-esting subjects in the nuclear physics, which is predicted by QCD and QHD.We investgated the effect observed by the quasi-free (p, 2p) scattering leading to s_<1/2> states.6.Collaboration program was started between PNPI(Russia) and RCNP for experimental nu-clear physics researches at GeV energy region.

电子冷却GeV核与电子对撞机所覆盖的能区物理对于从非微扰到微扰QCD（量子色动力学）的研究具有重要意义。在本研究计画中，我们探讨了以下几点：1.从实验观点来看，光度应高达10^<33>cm^<-2>s^<-1>。为了实现这种亮度，发现在最大能量处离子的电子冷却是不可避免的。2.在离子光学研究的基础上，对加速器晶格进行了概念设计。结果表明，核与电子的能量之间存在着最佳的组合; 3.在RCNP的研究中发现，冷却水温度控制在0.1°是稳定加速器的关键; 4.设计了高性能的磁体，并从离子光学的观点研究了涡流效应; 5.核中强子性质的介质修饰是核物理研究中最重要和最重要的问题之一，也是最重要的研究内容之一。6.启动了俄罗斯PNPI与RCNP在GeV能区实验核物理研究的合作项目。

项目成果

K.Hatanaka et al.: "Design study of a 10 GeV eiectron accumulator ring for the PEARL project at RCNP"Proc.of PANIC99.

K.Hatanaka 等人：“RCNP PEARL 项目的 10 GeV 电子蓄能器环的设计研究”PANIC99 的论文。

K.Hatanaka et al.: "Design study of a 10 GeV electron accumulator ring for the PEARL project at RCNP."Nucl.Phys.. A663&664. 1087-1090 (2000)

K.Hatanaka 等人：“RCNP PEARL 项目的 10 GeV 电子累积环的设计研究。”Nucl.Phys.. A663

T.Noro et al.: "In-medium NN interaction and nucleon and meson masses studied with nucleon knockout reactions."Nucl.Phys.. A663&664. 517-520 (2000)

T.Noro 等人：“通过核子敲除反应研究了介质中 NN 相互作用以及核子和介子质量。”Nucl.Phys.. A663

T.Noro.: "Nuclear Medium Effects Studied by Nucleon Quasifree Scattering."Proc.of SPIN2000. (2001)

T.Noro.：“通过核子准自由散射研究核介质效应。”Proc.of SPIN2000。

T.Noro et al.: "In-medium NN interaction and nucleon and meson masses studied with nucleon knockout reactions"Proc.of PANIC99.

T.Noro 等人：“用核子敲除反应研究了介质中 NN 相互作用以及核子和介子质量”PANIC99 的 Proc.。