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

电子冷却GeV核和电子对撞机所覆盖的能量下的物理对于从非摄动到摄动QCD（量子色动力学）的研究是非常重要的。在这个研究项目中，我们调查了以下内容。从实验的角度来看，光度应该达到10^<33>cm^<-2>s^<-1>。为了实现这种亮度，发现离子在最大能量处的电子冷却是不可避免的。在离子光学研究的基础上，进行了加速器晶格的概念设计。发现原子核和电子的能量之间存在最佳的组合。从我们在RCNP的研究中发现，冷却水温度控制0.1°是稳定加速器的关键问题。设计了高性能磁体，并从离子光学角度研究了涡流效应。原子核中强子性质的介质修饰是核物理学中最重要和最有趣的研究课题之一，它是由QCD和QHD预测的。我们研究了准自由（p, 2p）散射导致s_<1/2>态的效应。PNPI（俄罗斯）与RCNP启动了GeV能区实验核物理研究的合作项目。

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.