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CERN Document Server 5 записей найдено  Поиск длился 0.52 секунд. 
1.
JAERI 200 kV Electron Gun with an NEA-GaAs Photocathode / Nishitani, Tomohiro ; Hajima, Ryoichi ; Kikuzawa, Nobuhiro ; John Minehara, Eisuke ; Nagai, Ryoji ; Nishimori, Nobuyuki ; Sawamura, Masaru ; Yamauchi, T
The GaAs photocathode with negative electron affinity surface (NEA-GaAs) has been expected to be low emittance (<0.5 πmm・mrad) electron beam source. In order to generate low emittance electron beam required from ERL-FEL, we have started the developmental program of a 200keV electron gun with the NEA-GaAs photocathode for the first time in JAERI. [...]
2004 External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THPOS23
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2.
Misalingment Tolerance of a Hole-Coupling Optical Resonator for JAERI ERL-FEL / Nagai, Ryoji ; Hajima, Ryoichi ; Kikuzawa, Nobuhiro ; John Minehara, Eisuke ; Nishimori, Nobuyuki ; Sawamura, Masaru
The misalignment tolerance of a hole-coupling optical resonator for the JAERI ERL-FEL is estimated with a wavelength of 22 μm by a Fox-Li procedure simulation code. The output power stability depends on the misalignment tolerance. [...]
2004 External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THPOS22
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3.
Recent Results of the JAERI Energy-Recovery Linac FEL / Hajima, Ryoichi ; Iijima, Hokuto ; Kikuzawa, Nobuhiro ; John Minehara, Eisuke ; Nagai, Ryoji ; Nishimori, Nobuyuki ; Nishitani, Tomohiro ; Sawamura, Masaru
A research program towards a high-power FEL utilizing an energy-recovery linac is carried forward at Japan Atomic Energy Research Institute (JAERI). In this paper, we summarize recent results of the research activity at the JAERI ERL-FEL, which include the reinforcement of the injector, replacement of the RF control system and so on..
2004 External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THPOS21
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4.
Preparation Femtosecond Laser Prevention for the Cold-Worked Stress Corrosion Crackings on Reactor Grade Low Carbon Stainless Steel / John Minehara, Eisuke ; Nisimura, Akihiko
We report here that the femtosecond lasers like low average power Ti:Sapphire lasers, the JAERI high average power free-electron laser and others could peel off and remove two stress corrosion cracking (SCC) origins of the cold-worked and the cracking susceptible material, and residual tensile stress in hardened and stretched surface of low-carbon stainless steel cubic samples for nuclear reactor internals as a proof of principle experiment except for the third origin of corrosive environment. Because a 143 °C and 43% MgCl2 hot solution SCC test was performed for the samples to simulate the cold-worked SCC phenomena of the internals to show no crack at the laser-peered off strip on the cold-worked side and ten-thousands of cracks at the non-peeled off on the same side, it has been successfully demonstrated that the femtosecond lasers could clearly remove the two SCC origins and could resultantly prevent the cold-worked SCC..
2004 External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THBOS02
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5.
Status and Development for the JAERI ERL-FEL for High-Power and Long-Pulse Operation / Sawamura, Masaru ; Hajima, Ryoichi ; Kikuzawa, Nobuhiro ; John Minehara, Eisuke ; Nagai, Ryoji ; Nishimori, Nobuyuki
2004 - 3 p. External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.1723
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