1996 Fiscal Year Final Research Report Summary
Reserch of Ultra-High Gradient Laser-Plasma Accelerator
| Project/Area Number |
07044096
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | National Laboratory for High Energy Physics |
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Principal Investigator |
OGATA Astushi National Laboratory for High Energy Physics, Professor, 加速器研究部, 教授 (60023727)
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| Co-Investigator(Kenkyū-buntansha) |
GORBUNOV Leonid Lebedev Physics Institute, 固体物理学科, 教授
ANDREEV Nikolai High Energy Density Research Center, 部長
SIDERS Craig Lawrence Livermore National Laboratory, 研究員
DOWNER Michel University of Texas at Austin, オースチン校物理学科, 教授
KOZAWA Takahiro Inst.Sci.Ind.Research Osaka University, 産業科学研究所, 助手 (20251374)
SHIBATA Hiromi Research Center Nucl.Sci.Tech.Inst.Sci.Tech.The University of Tokyo, 原子力総合センター, 助教授 (30216014)
KAWAKUBO Tadamichi National Laboratory for High Energy Physics, 加速器研究部, 教授 (70044774)
NAKANISHI Hiroshi National Laboratory for High Energy Physics, 加速器研究部, 助教授 (00044769)
NAKAJIMA Kazuhisa National Laboratory for High Energy Physics, 加速器研究部, 助教授 (80164177)
KIRSANOV Victor High Energy Density Research Center, 上級研究員
FALCONE Roger University of California, Berkeley, バークレー校物理学科教授, 教授
TAJIMA Toshiki University of Texas at Austin, オースチン校物理学科教授, 教授
ILAN Ben-Zvi Broolhaven National Laboratory
MATHIEUSSENT Gilles University of Paris, SUD
CROS Brigitte University of Paris, SUD
MILCHEBERG Howard University of Marvland
CHATTOPADHVAV Swapon Lawrence Berkelev National Laboratory
LEEMANS Wim Lawrence Berkelev National Laboratory
MOUROU Gerald University of Michigan
WURTELE Jonathan University of California, Berkelev
WHITTUM David Stanford Linear Accelerator Center
CHEN Pisin Stanford Linear Accelerator Center
KATSOULEAS Tom University of Southern California
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| Project Period (FY) |
1995 – 1996
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| Keywords | laser acceleration / plasma acceleration |
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| Research Abstract |
Laser-plasma interaction and acceleration of linac test-beams by the laser was studied in collaboration with Tokyo University and Japan Atomic Energy Research Institute. A KEK T-cube laser ana an electron linac of Tokyo University were used. International collaboration has been carried out based on these studies. Besides this, laser-cathode guns have been developed under the cooperation with BNL.
There discoveries were made in the study of laser-plasma interaction ; they are formation of optical channel, anomalous blue shift of incident lasers and gas jet formation. They are hard to explain by the existing theory. Analytical and simulation studies were made by visitors from Russia and US.
In order to accelerate the linac beams, we have to synchronize the picosecond linac beams and femtosecond laser beams. Experiences of BNL and LBL were helpful in establishing this technique.
In the acceleration experiments, an energy gain of 300MeV was observed, which is far larger than the prediction assuming the diffraction-limited acceleration length. In order to clarifty the physical mechanism, we are now trying the wakefield detection developed by the colleagues of University of Texas and University of Paris.
The laser cathode guns were designed by us and machined by BNL-UCLA team.
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