2000 Fiscal Year Final Research Report Summary
Accelerator and nuclear physics with colliders of electron-cooled GeV nuclei and electrons
| Project/Area Number |
11691127
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
素粒子・核・宇宙線
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| Research Institution | Osaka University |
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Principal Investigator |
HATANAKA Kichiji Osaka University, RCNP Professor, 核物理研究センター, 教授 (50144530)
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| Co-Investigator(Kenkyū-buntansha) |
WAKASA Tomotsugu Osaka University, Associates, 核物理研究センター, 助手 (10311771)
SAITO Takane Osaka University, Associates, 核物理研究センター, 助教授 (60028222)
SATO Kenji Osaka University, Assistant Prof., 核物理研究センター, 教授 (60013421)
NORO Tetsuo Kyushu University, Department of physics professor, 理学研究科, 教授 (30164750)
NINOMIYA Shiro Osaka University, Associates, 核物理研究センター, 助手 (80304062)
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| Project Period (FY) |
1999 – 2000
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| Keywords | Collider / High luminosity / Electron cooling / QCD / Medium effects / Eddy current |
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| Research Abstract |
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.
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