POP experiments of the photon-e-beam interaction in the supercavity

Fujita, Masayuki; Asakuma, T.; Chen, J.; Imasaki, K.; Yamanaka, Chiyoe; Asakawa, M.; Inoue, N.; Mima, Kunioki; Nakai, S.; Agari, T.; Nakao, Naoya; Moon, Ahsa; Ohigashi, Nobuhisa; Minamiguchi, T.; Tsunawaki, Yoshiaki

doi:10.1016/0168-9002(94)01582-1

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…However, the experiment in this study suggests that the high current energy recovery system would be useful for high-efficiency and high-power free-electron laser operation, energy transportation, recirculation of output beam current, 10 and proof-of-principle experiments for Compton scattering of a stored photon in a supercavity, 2,11 where proper beam damping is an important factor in reducing thermal heating of the target materials and avoiding noise around the interaction region. It was inferred that energetic electrons that were striking the metal surface (E 4 ) impart some energy to electrons inside the metal.…”

Section: Resultsmentioning

confidence: 95%

Experimental study on an electron-beam energy recovery system using a multistage collector

Roy

Moon

Mima

et al. 1998

Review of Scientific Instruments

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Section: Resultsmentioning

confidence: 95%

Experimental study on an electron-beam energy recovery system using a multistage collector

Roy

Moon

Mima

et al. 1998

Review of Scientific Instruments

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“…A number of thermionic cathodes such as the dispenser cathodes and LaB 6 have been developed [2][3][4][5][6][7][8][9][10][11] in response to the growing demand for high current density, high quality electron beams. 1 Electron beam trajectories of the gun were studied by using an E-GUN code. These include direct heating for cathodes in the form of a wire on a hairpin, 13 radiation heating, electron heating, a combination of radiation and electron heating, 11,14,15 and high frequency heating.…”

Section: Introductionmentioning

confidence: 99%

Study of a laser-heated electron gun

Roy

Moon

Mima

et al. 1996

Review of Scientific Instruments

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A method of cathode heating using a laser was studied for an electron gun. In order to observe the practicality of the heating system, the characteristics of the laser-heated gun with a dispenser and LaB 6 thermionic cathodes have been experimentally investigated. The direct laser irradiation is so efficient that the gun is equipped without heat shielding, a cooling system, or an electrical circuit in the gun chamber for cathode heating. Modeling, based on the experimental data, indicates that the cathode temperature is proportional to one-fourth power of the laser power and that laser power loss and conduction loss of heat in the gun assembly are negligible. An electron beam current density 0.48 A/cm 2 was measured with 26 W laser power for a dispenser cathode of 0.06 cm 2 emission area. Current density 0.16 A/cm 2 with 25 W was recorded for a LaB 6 cathode of area 0.12 cm 2 . Electron beam emittance has been measured by using the typical pepper-pot technique. It was observed that the growth of electron beam emittance was very small in the laser heating.

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